AcornElectronMainboard

Annotated UHF.sch

24:dd9a3c03f3fd
21 months ago Paul Boddie Added dedicated CSYNC sheet to try and consolidate sync processing.
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EESchema Schematic File Version 4
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LIBS:AcornElectronMainboard-cache
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EELAYER 26 0
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EELAYER END
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$Descr A4 11693 8268
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encoding utf-8
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Sheet 9 11
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Title ""
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Date ""
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Rev ""
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Comp ""
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Comment1 ""
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Comment2 ""
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Comment3 ""
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Comment4 ""
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$EndDescr
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BLUE
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GREEN
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RED
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~HS
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CLOCK_VIDEO
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L 74xx:74LS74 IC11
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$Comp
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5V
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5V
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Wire Wire Line
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5V
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5V
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5V
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 2600 6500
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Wire Wire Line
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L 74xx:74LS86 IC14
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Wire Wire Line
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L 74xx:74LS86 IC14
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$Comp
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$Comp
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$Comp
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$Comp
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L 74xx:74LS86 IC15
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Wire Wire Line
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Connection ~ 5000 3600
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Wire Wire Line
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Wire Wire Line
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Connection ~ 5000 4500
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Wire Wire Line
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Wire Wire Line
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Connection ~ 4700 5200
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 4900 3800
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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L 74xx:74LS00 IC16
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$Comp
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$Comp
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L 74xx:74LS00 IC16
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F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 7500 3000 50  0001 C CNN
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$Comp
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$Comp
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$Comp
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L 74xx:74LS00 IC10
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	1    0    0    -1  
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$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6500 3500
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Wire Wire Line
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Connection ~ 6600 3400
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6400 4400
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6500 5300
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6600 5600
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Wire Wire Line
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$Comp
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L Device:R R50
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U 1 1 61E6659B
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P 8150 2500
paul@0 442
AR Path="/61DB955D/61DF7FF4/61E6659B" Ref="R50"  Part="1" 
paul@0 443
AR Path="/62411C42/61E6659B" Ref="R50"  Part="1" 
paul@11 444
F 0 "R50" V 8050 2500 50  0000 C CNN
paul@11 445
F 1 "820R" V 8250 2500 50  0000 C CNN
paul@11 446
F 2 "" V 8080 2500 50  0001 C CNN
paul@11 447
F 3 "~" H 8150 2500 50  0001 C CNN
paul@11 448
	1    8150 2500
paul@0 449
	0    1    1    0   
paul@0 450
$EndComp
paul@0 451
$Comp
paul@0 452
L Device:R R51
paul@0 453
U 1 1 61E66814
paul@0 454
P 8150 3000
paul@0 455
AR Path="/61DB955D/61DF7FF4/61E66814" Ref="R51"  Part="1" 
paul@0 456
AR Path="/62411C42/61E66814" Ref="R51"  Part="1" 
paul@0 457
F 0 "R51" V 8050 3000 50  0000 C CNN
paul@0 458
F 1 "680R" V 8250 3000 50  0000 C CNN
paul@0 459
F 2 "" V 8080 3000 50  0001 C CNN
paul@0 460
F 3 "~" H 8150 3000 50  0001 C CNN
paul@0 461
	1    8150 3000
paul@0 462
	0    1    1    0   
paul@0 463
$EndComp
paul@0 464
$Comp
paul@0 465
L Device:R R52
paul@0 466
U 1 1 61E669DC
paul@0 467
P 8150 3500
paul@0 468
AR Path="/61DB955D/61DF7FF4/61E669DC" Ref="R52"  Part="1" 
paul@0 469
AR Path="/62411C42/61E669DC" Ref="R52"  Part="1" 
paul@0 470
F 0 "R52" V 8050 3500 50  0000 C CNN
paul@0 471
F 1 "2200R" V 8250 3500 50  0000 C CNN
paul@0 472
F 2 "" V 8080 3500 50  0001 C CNN
paul@0 473
F 3 "~" H 8150 3500 50  0001 C CNN
paul@0 474
	1    8150 3500
paul@0 475
	0    1    1    0   
paul@0 476
$EndComp
paul@0 477
$Comp
paul@0 478
L Device:R R53
paul@0 479
U 1 1 61E66BAC
paul@0 480
P 8150 3900
paul@0 481
AR Path="/61DB955D/61DF7FF4/61E66BAC" Ref="R53"  Part="1" 
paul@0 482
AR Path="/62411C42/61E66BAC" Ref="R53"  Part="1" 
paul@0 483
F 0 "R53" V 8050 3900 50  0000 C CNN
paul@0 484
F 1 "470R" V 8250 3900 50  0000 C CNN
paul@0 485
F 2 "" V 8080 3900 50  0001 C CNN
paul@0 486
F 3 "~" H 8150 3900 50  0001 C CNN
paul@0 487
	1    8150 3900
paul@0 488
	0    1    1    0   
paul@0 489
$EndComp
paul@0 490
$Comp
paul@0 491
L Device:R R54
paul@0 492
U 1 1 61E66D82
paul@0 493
P 7850 4200
paul@0 494
AR Path="/61DB955D/61DF7FF4/61E66D82" Ref="R54"  Part="1" 
paul@0 495
AR Path="/62411C42/61E66D82" Ref="R54"  Part="1" 
paul@0 496
F 0 "R54" V 7750 4200 50  0000 C CNN
paul@0 497
F 1 "1200R" V 7950 4200 50  0000 C CNN
paul@0 498
F 2 "" V 7780 4200 50  0001 C CNN
paul@0 499
F 3 "~" H 7850 4200 50  0001 C CNN
paul@0 500
	1    7850 4200
paul@0 501
	0    1    1    0   
paul@0 502
$EndComp
paul@0 503
$Comp
paul@0 504
L Device:R R55
paul@0 505
U 1 1 61E66F76
paul@0 506
P 8150 4600
paul@0 507
AR Path="/61DB955D/61DF7FF4/61E66F76" Ref="R55"  Part="1" 
paul@0 508
AR Path="/62411C42/61E66F76" Ref="R55"  Part="1" 
paul@0 509
F 0 "R55" V 8050 4600 50  0000 C CNN
paul@0 510
F 1 "3300R" V 8250 4600 50  0000 C CNN
paul@0 511
F 2 "" V 8080 4600 50  0001 C CNN
paul@0 512
F 3 "~" H 8150 4600 50  0001 C CNN
paul@0 513
	1    8150 4600
paul@0 514
	0    1    1    0   
paul@0 515
$EndComp
paul@0 516
$Comp
paul@0 517
L Device:R R56
paul@0 518
U 1 1 61E6764A
paul@0 519
P 8150 5000
paul@0 520
AR Path="/61DB955D/61DF7FF4/61E6764A" Ref="R56"  Part="1" 
paul@0 521
AR Path="/62411C42/61E6764A" Ref="R56"  Part="1" 
paul@0 522
F 0 "R56" V 8050 5000 50  0000 C CNN
paul@0 523
F 1 "680R" V 8250 5000 50  0000 C CNN
paul@0 524
F 2 "" V 8080 5000 50  0001 C CNN
paul@0 525
F 3 "~" H 8150 5000 50  0001 C CNN
paul@0 526
	1    8150 5000
paul@0 527
	0    1    1    0   
paul@0 528
$EndComp
paul@0 529
$Comp
paul@0 530
L Device:R R57
paul@0 531
U 1 1 61E677BC
paul@0 532
P 8150 5500
paul@0 533
AR Path="/61DB955D/61DF7FF4/61E677BC" Ref="R57"  Part="1" 
paul@0 534
AR Path="/62411C42/61E677BC" Ref="R57"  Part="1" 
paul@0 535
F 0 "R57" V 8050 5500 50  0000 C CNN
paul@0 536
F 1 "680R" V 8250 5500 50  0000 C CNN
paul@0 537
F 2 "" V 8080 5500 50  0001 C CNN
paul@0 538
F 3 "~" H 8150 5500 50  0001 C CNN
paul@0 539
	1    8150 5500
paul@0 540
	0    1    1    0   
paul@0 541
$EndComp
paul@0 542
Wire Wire Line
paul@0 543
	6600 3000 6900 3000
paul@0 544
Wire Wire Line
paul@0 545
	6900 3000 6900 2500
paul@0 546
Wire Wire Line
paul@11 547
	6900 2500 8000 2500
paul@0 548
Connection ~ 6600 3000
paul@0 549
Wire Wire Line
paul@0 550
	7800 3000 8000 3000
paul@0 551
Wire Wire Line
paul@0 552
	7400 3500 8000 3500
paul@0 553
Wire Wire Line
paul@0 554
	7800 3900 8000 3900
paul@0 555
Connection ~ 6500 4200
paul@0 556
Wire Wire Line
paul@0 557
	6500 4200 6500 4500
paul@0 558
Wire Wire Line
paul@0 559
	7400 4600 8000 4600
paul@0 560
Wire Wire Line
paul@0 561
	7800 5000 8000 5000
paul@0 562
Wire Wire Line
paul@0 563
	7400 5500 8000 5500
paul@0 564
$Comp
paul@0 565
L Device:L_Core_Iron L1
paul@0 566
U 1 1 61F1529D
paul@0 567
P 8850 5500
paul@0 568
AR Path="/61DB955D/61DF7FF4/61F1529D" Ref="L1"  Part="1" 
paul@0 569
AR Path="/62411C42/61F1529D" Ref="L1"  Part="1" 
paul@0 570
F 0 "L1" V 8672 5500 50  0000 C CNN
paul@0 571
F 1 "33??H" V 8763 5500 50  0000 C CNN
paul@0 572
F 2 "" H 8850 5500 50  0001 C CNN
paul@0 573
F 3 "~" H 8850 5500 50  0001 C CNN
paul@0 574
	1    8850 5500
paul@0 575
	0    1    1    0   
paul@0 576
$EndComp
paul@0 577
Wire Wire Line
paul@0 578
	8300 5500 8500 5500
paul@0 579
Wire Wire Line
paul@0 580
	8300 5000 8500 5000
paul@0 581
Wire Wire Line
paul@0 582
	8500 5000 8500 5500
paul@0 583
Connection ~ 8500 5500
paul@0 584
Wire Wire Line
paul@0 585
	8500 5500 8700 5500
paul@0 586
Wire Wire Line
paul@0 587
	8300 4600 8500 4600
paul@0 588
Wire Wire Line
paul@0 589
	8500 4600 8500 5000
paul@0 590
Connection ~ 8500 5000
paul@0 591
Wire Wire Line
paul@0 592
	8000 4200 8500 4200
paul@0 593
Wire Wire Line
paul@0 594
	8500 4200 8500 4600
paul@0 595
Connection ~ 8500 4600
paul@0 596
Wire Wire Line
paul@0 597
	8300 3900 8500 3900
paul@0 598
Wire Wire Line
paul@0 599
	8500 3900 8500 4200
paul@0 600
Connection ~ 8500 4200
paul@0 601
Wire Wire Line
paul@0 602
	8300 3500 8500 3500
paul@0 603
Wire Wire Line
paul@0 604
	8500 3500 8500 3900
paul@0 605
Connection ~ 8500 3900
paul@0 606
Wire Wire Line
paul@0 607
	8300 3000 8500 3000
paul@0 608
Wire Wire Line
paul@0 609
	8500 3000 8500 3500
paul@0 610
Connection ~ 8500 3500
paul@0 611
Wire Wire Line
paul@11 612
	8300 2500 8500 2500
paul@0 613
Wire Wire Line
paul@0 614
	8500 2500 8500 3000
paul@0 615
Connection ~ 8500 3000
paul@0 616
Wire Wire Line
paul@0 617
	6500 4200 7700 4200
paul@0 618
Wire Wire Line
paul@0 619
	4800 4000 5500 4000
paul@0 620
Connection ~ 4800 4000
paul@0 621
Wire Wire Line
paul@0 622
	4800 4000 4800 4300
paul@0 623
Wire Wire Line
paul@0 624
	4900 3300 4900 3400
paul@0 625
Wire Wire Line
paul@0 626
	4700 5200 5100 5200
paul@0 627
Wire Wire Line
paul@0 628
	4900 3400 5100 3400
paul@0 629
Connection ~ 4900 3400
paul@0 630
Wire Wire Line
paul@0 631
	4900 3400 4900 3800
paul@0 632
Wire Wire Line
paul@0 633
	6800 5400 6500 5400
paul@0 634
Wire Wire Line
paul@0 635
	6400 3600 6800 3600
paul@0 636
$Comp
paul@0 637
L 74xx:74LS00 IC10
paul@0 638
U 1 1 61EB617E
paul@0 639
P 6300 6800
paul@0 640
AR Path="/61DB955D/61DF7FF4/61EB617E" Ref="IC10"  Part="1" 
paul@0 641
AR Path="/62411C42/61EB617E" Ref="IC10"  Part="1" 
paul@0 642
F 0 "IC10" H 6300 6483 50  0000 C CNN
paul@0 643
F 1 "74LS00" H 6300 6574 50  0000 C CNN
paul@0 644
F 2 "" H 6300 6800 50  0001 C CNN
paul@0 645
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 6300 6800 50  0001 C CNN
paul@0 646
	1    6300 6800
paul@0 647
	-1   0    0    1   
paul@0 648
$EndComp
paul@0 649
Wire Wire Line
paul@0 650
	5000 5600 6600 5600
paul@0 651
$Comp
paul@0 652
L 74xx:74LS00 IC10
paul@0 653
U 4 1 61EDEB37
paul@0 654
P 6400 6200
paul@0 655
AR Path="/61DB955D/61DF7FF4/61EDEB37" Ref="IC10"  Part="4" 
paul@0 656
AR Path="/62411C42/61EDEB37" Ref="IC10"  Part="4" 
paul@0 657
F 0 "IC10" H 6400 6525 50  0000 C CNN
paul@0 658
F 1 "74LS00" H 6400 6434 50  0000 C CNN
paul@0 659
F 2 "" H 6400 6200 50  0001 C CNN
paul@0 660
F 3 "http://www.ti.com/lit/gpn/sn74ls00" H 6400 6200 50  0001 C CNN
paul@0 661
	4    6400 6200
paul@0 662
	1    0    0    -1  
paul@0 663
$EndComp
paul@0 664
Wire Wire Line
paul@0 665
	4800 6100 5000 6100
paul@0 666
Wire Wire Line
paul@0 667
	5000 6100 5000 5600
paul@0 668
Wire Wire Line
paul@0 669
	6600 6700 6700 6700
paul@0 670
Wire Wire Line
paul@0 671
	6800 6700 6800 6200
paul@0 672
Wire Wire Line
paul@0 673
	6800 6200 6700 6200
paul@0 674
Wire Wire Line
paul@0 675
	6600 6900 6700 6900
paul@0 676
Wire Wire Line
paul@0 677
	6700 6900 6700 6700
paul@0 678
Connection ~ 6700 6700
paul@0 679
Wire Wire Line
paul@0 680
	6700 6700 6800 6700
paul@0 681
$Comp
paul@0 682
L Device:R R17
paul@0 683
U 1 1 61F753FB
paul@0 684
P 5350 6100
paul@0 685
AR Path="/61DB955D/61DF7FF4/61F753FB" Ref="R17"  Part="1" 
paul@0 686
AR Path="/62411C42/61F753FB" Ref="R17"  Part="1" 
paul@0 687
F 0 "R17" V 5250 6100 50  0000 C CNN
paul@0 688
F 1 "100R" V 5450 6100 50  0000 C CNN
paul@0 689
F 2 "" V 5280 6100 50  0001 C CNN
paul@0 690
F 3 "~" H 5350 6100 50  0001 C CNN
paul@0 691
	1    5350 6100
paul@0 692
	0    1    1    0   
paul@0 693
$EndComp
paul@0 694
Wire Wire Line
paul@0 695
	4800 6300 5100 6300
paul@0 696
Wire Wire Line
paul@0 697
	5100 6300 5100 6100
paul@0 698
Wire Wire Line
paul@0 699
	5100 6100 5200 6100
paul@0 700
$Comp
paul@0 701
L Device:C C12
paul@0 702
U 1 1 61F920C4
paul@0 703
P 5600 6350
paul@0 704
AR Path="/61DB955D/61DF7FF4/61F920C4" Ref="C12"  Part="1" 
paul@0 705
AR Path="/62411C42/61F920C4" Ref="C12"  Part="1" 
paul@0 706
F 0 "C12" H 5500 6300 50  0000 R CNN
paul@0 707
F 1 "33nF" H 5500 6400 50  0000 R CNN
paul@0 708
F 2 "" H 5638 6200 50  0001 C CNN
paul@0 709
F 3 "~" H 5600 6350 50  0001 C CNN
paul@0 710
	1    5600 6350
paul@0 711
	-1   0    0    1   
paul@0 712
$EndComp
paul@0 713
Text GLabel 5500 6600 0    50   Input ~ 0
paul@0 714
0V
paul@0 715
Wire Wire Line
paul@0 716
	4500 6500 4500 6800
paul@0 717
Wire Wire Line
paul@0 718
	4500 6800 6000 6800
paul@0 719
Wire Wire Line
paul@0 720
	5500 6600 5600 6600
paul@0 721
Wire Wire Line
paul@0 722
	5600 6600 5600 6500
paul@0 723
Wire Wire Line
paul@0 724
	5500 6100 5600 6100
paul@0 725
Wire Wire Line
paul@0 726
	5600 6100 5600 6200
paul@0 727
Wire Wire Line
paul@0 728
	5600 6100 6000 6100
paul@0 729
Connection ~ 5600 6100
paul@0 730
Wire Wire Line
paul@0 731
	6100 6300 6000 6300
paul@0 732
Wire Wire Line
paul@0 733
	6000 6300 6000 6100
paul@0 734
Connection ~ 6000 6100
paul@0 735
Wire Wire Line
paul@0 736
	6000 6100 6100 6100
paul@0 737
$Comp
paul@0 738
L Device:C C18
paul@0 739
U 1 1 6205DAF8
paul@0 740
P 9200 5150
paul@0 741
AR Path="/61DB955D/61DF7FF4/6205DAF8" Ref="C18"  Part="1" 
paul@0 742
AR Path="/62411C42/6205DAF8" Ref="C18"  Part="1" 
paul@0 743
F 0 "C18" H 9100 5100 50  0000 R CNN
paul@0 744
F 1 "39pF" H 9100 5200 50  0000 R CNN
paul@0 745
F 2 "" H 9238 5000 50  0001 C CNN
paul@0 746
F 3 "~" H 9200 5150 50  0001 C CNN
paul@0 747
	1    9200 5150
paul@0 748
	-1   0    0    1   
paul@0 749
$EndComp
paul@0 750
$Comp
paul@0 751
L Device:R R38
paul@0 752
U 1 1 6205DBD8
paul@0 753
P 9200 4650
paul@0 754
AR Path="/61DB955D/61DF7FF4/6205DBD8" Ref="R38"  Part="1" 
paul@0 755
AR Path="/62411C42/6205DBD8" Ref="R38"  Part="1" 
paul@0 756
F 0 "R38" H 9270 4696 50  0000 L CNN
paul@0 757
F 1 "470R" H 9270 4605 50  0000 L CNN
paul@0 758
F 2 "" V 9130 4650 50  0001 C CNN
paul@0 759
F 3 "~" H 9200 4650 50  0001 C CNN
paul@0 760
	1    9200 4650
paul@0 761
	1    0    0    -1  
paul@0 762
$EndComp
paul@0 763
$Comp
paul@0 764
L bc239:BC239 Q7
paul@0 765
U 1 1 6205DD14
paul@0 766
P 9200 3700
paul@0 767
AR Path="/61DB955D/61DF7FF4/6205DD14" Ref="Q7"  Part="1" 
paul@0 768
AR Path="/62411C42/6205DD14" Ref="Q7"  Part="1" 
paul@0 769
F 0 "Q7" V 9528 3700 50  0000 C CNN
paul@0 770
F 1 "BC239" V 9437 3700 50  0000 C CNN
paul@0 771
F 2 "Package_TO_SOT_THT:TO-92_Inline" H 9400 3625 50  0001 L CIN
paul@0 772
F 3 "https://www.futurlec.com/Transistors/BC239.shtml" H 9200 3700 50  0001 L CNN
paul@0 773
	1    9200 3700
paul@0 774
	0    -1   -1   0   
paul@0 775
$EndComp
paul@0 776
Wire Wire Line
paul@0 777
	9000 5500 9200 5500
paul@0 778
Wire Wire Line
paul@0 779
	9200 5500 9200 5300
paul@0 780
Wire Wire Line
paul@0 781
	9200 5000 9200 4800
paul@0 782
Wire Wire Line
paul@0 783
	9200 4500 9200 4400
paul@0 784
$Comp
paul@0 785
L Device:C C21
paul@0 786
U 1 1 620BD8BB
paul@0 787
P 9500 2650
paul@0 788
AR Path="/61DB955D/61DF7FF4/620BD8BB" Ref="C21"  Part="1" 
paul@0 789
AR Path="/62411C42/620BD8BB" Ref="C21"  Part="1" 
paul@11 790
F 0 "C21" H 9600 2600 50  0000 L CNN
paul@11 791
F 1 "47pF" H 9600 2700 50  0000 L CNN
paul@0 792
F 2 "" H 9538 2500 50  0001 C CNN
paul@0 793
F 3 "~" H 9500 2650 50  0001 C CNN
paul@0 794
	1    9500 2650
paul@0 795
	-1   0    0    1   
paul@0 796
$EndComp
paul@0 797
Wire Wire Line
paul@0 798
	9500 2100 9500 2500
paul@0 799
Wire Wire Line
paul@0 800
	9400 3600 9500 3600
paul@0 801
Wire Wire Line
paul@11 802
	9500 3600 9500 3500
paul@0 803
Text GLabel 8900 3500 1    50   Input ~ 0
paul@0 804
5V
paul@0 805
Wire Wire Line
paul@0 806
	9000 3600 8900 3600
paul@0 807
Wire Wire Line
paul@0 808
	8900 3600 8900 3500
paul@0 809
$Comp
paul@0 810
L Device:R R29
paul@0 811
U 1 1 620EF7AD
paul@0 812
P 8700 4150
paul@0 813
AR Path="/61DB955D/61DF7FF4/620EF7AD" Ref="R29"  Part="1" 
paul@0 814
AR Path="/62411C42/620EF7AD" Ref="R29"  Part="1" 
paul@0 815
F 0 "R29" H 8770 4196 50  0000 L CNN
paul@0 816
F 1 "120000R" H 8770 4105 50  0000 L CNN
paul@0 817
F 2 "" V 8630 4150 50  0001 C CNN
paul@0 818
F 3 "~" H 8700 4150 50  0001 C CNN
paul@0 819
	1    8700 4150
paul@0 820
	1    0    0    -1  
paul@0 821
$EndComp
paul@0 822
Text GLabel 8700 3900 1    50   Input ~ 0
paul@0 823
5V
paul@0 824
Wire Wire Line
paul@0 825
	8700 3900 8700 4000
paul@0 826
Wire Wire Line
paul@0 827
	8700 4300 8700 4400
paul@0 828
Wire Wire Line
paul@0 829
	8700 4400 9200 4400
paul@0 830
Connection ~ 9200 4400
paul@0 831
Wire Wire Line
paul@11 832
	9200 4400 9200 4300
paul@0 833
$Comp
paul@0 834
L Device:R R30
paul@0 835
U 1 1 62144EE5
paul@11 836
P 9700 4550
paul@0 837
AR Path="/61DB955D/61DF7FF4/62144EE5" Ref="R30"  Part="1" 
paul@0 838
AR Path="/62411C42/62144EE5" Ref="R30"  Part="1" 
paul@11 839
F 0 "R30" H 9770 4596 50  0000 L CNN
paul@11 840
F 1 "120000R" H 9770 4505 50  0000 L CNN
paul@11 841
F 2 "" V 9630 4550 50  0001 C CNN
paul@11 842
F 3 "~" H 9700 4550 50  0001 C CNN
paul@11 843
	1    9700 4550
paul@0 844
	1    0    0    -1  
paul@0 845
$EndComp
paul@11 846
Text GLabel 9700 4800 3    50   Input ~ 0
paul@0 847
0V
paul@0 848
Wire Wire Line
paul@11 849
	9700 4800 9700 4700
paul@0 850
Wire Wire Line
paul@11 851
	9700 4400 9700 4300
paul@0 852
Wire Wire Line
paul@11 853
	9700 4300 9200 4300
paul@11 854
Connection ~ 9200 4300
paul@0 855
Wire Wire Line
paul@11 856
	9200 4300 9200 3900
paul@0 857
$Comp
paul@0 858
L Device:R R37
paul@0 859
U 1 1 621794AB
paul@11 860
P 9700 3750
paul@0 861
AR Path="/61DB955D/61DF7FF4/621794AB" Ref="R37"  Part="1" 
paul@0 862
AR Path="/62411C42/621794AB" Ref="R37"  Part="1" 
paul@11 863
F 0 "R37" H 9770 3796 50  0000 L CNN
paul@11 864
F 1 "1000R" H 9770 3705 50  0000 L CNN
paul@11 865
F 2 "" V 9630 3750 50  0001 C CNN
paul@11 866
F 3 "~" H 9700 3750 50  0001 C CNN
paul@11 867
	1    9700 3750
paul@0 868
	1    0    0    -1  
paul@0 869
$EndComp
paul@11 870
Text GLabel 9700 4000 3    50   Input ~ 0
paul@0 871
0V
paul@0 872
Wire Wire Line
paul@11 873
	9700 4000 9700 3900
paul@0 874
Wire Wire Line
paul@11 875
	9700 3600 9700 3500
paul@0 876
Wire Wire Line
paul@11 877
	9700 3500 9500 3500
paul@0 878
Wire Wire Line
paul@11 879
	9500 3500 9500 3300
paul@11 880
Connection ~ 9500 3500
paul@0 881
Wire Wire Line
paul@11 882
	9500 2100 10050 2100
paul@11 883
NoConn ~ 10050 2200
paul@0 884
$Comp
paul@0 885
L Device:R R65
paul@0 886
U 1 1 621D44B6
paul@0 887
P 9700 1050
paul@0 888
AR Path="/61DB955D/61DF7FF4/621D44B6" Ref="R65"  Part="1" 
paul@0 889
AR Path="/62411C42/621D44B6" Ref="R65"  Part="1" 
paul@0 890
F 0 "R65" H 9770 1096 50  0000 L CNN
paul@0 891
F 1 "10R" H 9770 1005 50  0000 L CNN
paul@0 892
F 2 "" V 9630 1050 50  0001 C CNN
paul@0 893
F 3 "~" H 9700 1050 50  0001 C CNN
paul@0 894
	1    9700 1050
paul@0 895
	1    0    0    -1  
paul@0 896
$EndComp
paul@0 897
Wire Wire Line
paul@11 898
	10400 1300 9700 1300
paul@0 899
Wire Wire Line
paul@0 900
	9700 1300 9700 1200
paul@0 901
Text GLabel 9700 800  1    50   Input ~ 0
paul@0 902
5V
paul@0 903
Wire Wire Line
paul@0 904
	9700 800  9700 900 
paul@0 905
$Comp
paul@0 906
L Device:CP C23
paul@0 907
U 1 1 621F95D7
paul@0 908
P 9200 1550
paul@0 909
AR Path="/61DB955D/61DF7FF4/621F95D7" Ref="C23"  Part="1" 
paul@0 910
AR Path="/62411C42/621F95D7" Ref="C23"  Part="1" 
paul@0 911
F 0 "C23" H 9318 1596 50  0000 L CNN
paul@11 912
F 1 "47??F/TANT" H 9318 1505 38  0000 L CNN
paul@0 913
F 2 "" H 9238 1400 50  0001 C CNN
paul@0 914
F 3 "~" H 9200 1550 50  0001 C CNN
paul@0 915
	1    9200 1550
paul@0 916
	1    0    0    -1  
paul@0 917
$EndComp
paul@0 918
Text GLabel 9200 1800 3    50   Input ~ 0
paul@0 919
0V
paul@0 920
Wire Wire Line
paul@0 921
	9200 1800 9200 1700
paul@0 922
Wire Wire Line
paul@0 923
	9200 1400 9200 1300
paul@0 924
Wire Wire Line
paul@0 925
	9200 1300 9700 1300
paul@0 926
Connection ~ 9700 1300
paul@11 927
Text GLabel 10500 2700 2    50   Input ~ 0
paul@0 928
0V
paul@0 929
Wire Wire Line
paul@11 930
	10400 2700 10400 2600
paul@0 931
Wire Wire Line
paul@11 932
	10400 1700 10400 1400
paul@0 933
Connection ~ 9500 2100
paul@0 934
$Comp
paul@0 935
L Device:R R?
paul@0 936
U 1 1 61F6CBF3
paul@0 937
P 8700 1850
paul@0 938
AR Path="/61DB955D/61F6CBF3" Ref="R?"  Part="1" 
paul@0 939
AR Path="/61DB955D/61DF7FF4/61F6CBF3" Ref="R41"  Part="1" 
paul@0 940
AR Path="/62411C42/61F6CBF3" Ref="R41"  Part="1" 
paul@0 941
F 0 "R41" H 8770 1896 50  0000 L CNN
paul@0 942
F 1 "1200R" H 8770 1805 50  0000 L CNN
paul@0 943
F 2 "" V 8630 1850 50  0001 C CNN
paul@0 944
F 3 "~" H 8700 1850 50  0001 C CNN
paul@0 945
	1    8700 1850
paul@0 946
	1    0    0    -1  
paul@0 947
$EndComp
paul@0 948
$Comp
paul@0 949
L Device:R R?
paul@0 950
U 1 1 61F6CBFA
paul@0 951
P 8800 2350
paul@0 952
AR Path="/61DB955D/61F6CBFA" Ref="R?"  Part="1" 
paul@0 953
AR Path="/61DB955D/61DF7FF4/61F6CBFA" Ref="R42"  Part="1" 
paul@0 954
AR Path="/62411C42/61F6CBFA" Ref="R42"  Part="1" 
paul@0 955
F 0 "R42" H 8870 2396 50  0000 L CNN
paul@0 956
F 1 "3900R" H 8870 2305 50  0000 L CNN
paul@0 957
F 2 "" V 8730 2350 50  0001 C CNN
paul@0 958
F 3 "~" H 8800 2350 50  0001 C CNN
paul@0 959
	1    8800 2350
paul@0 960
	1    0    0    -1  
paul@0 961
$EndComp
paul@0 962
Wire Wire Line
paul@0 963
	8700 2000 8700 2100
paul@0 964
Wire Wire Line
paul@0 965
	8700 2100 8800 2100
paul@0 966
Wire Wire Line
paul@0 967
	8800 2100 8800 2200
paul@0 968
Text GLabel 8800 2600 3    50   Input ~ 0
paul@0 969
0V
paul@0 970
Text GLabel 8700 1600 1    50   Input ~ 0
paul@0 971
5V
paul@0 972
Wire Wire Line
paul@0 973
	8700 1600 8700 1700
paul@0 974
Wire Wire Line
paul@0 975
	8800 2500 8800 2600
paul@0 976
Connection ~ 8800 2100
paul@0 977
Wire Wire Line
paul@0 978
	8800 2100 9500 2100
paul@0 979
$Comp
paul@0 980
L Device:C C17
paul@0 981
U 1 1 6241CD4D
paul@11 982
P 10550 3300
paul@11 983
F 0 "C17" V 10298 3300 50  0000 C CNN
paul@11 984
F 1 "470pF" V 10389 3300 50  0000 C CNN
paul@11 985
F 2 "" H 10588 3150 50  0001 C CNN
paul@11 986
F 3 "~" H 10550 3300 50  0001 C CNN
paul@11 987
	1    10550 3300
paul@0 988
	0    1    1    0   
paul@0 989
$EndComp
paul@11 990
Text GLabel 10800 3300 2    50   Output ~ 0
paul@0 991
UHF_IN
paul@0 992
Wire Wire Line
paul@11 993
	9500 3300 10400 3300
paul@11 994
Connection ~ 9500 3300
paul@0 995
Wire Wire Line
paul@11 996
	9500 3300 9500 2800
paul@0 997
Wire Wire Line
paul@11 998
	10700 3300 10800 3300
paul@11 999
Text Notes 9900 3500 0    50   ~ 0
paul@0 1000
For optional link to SK3 circuit.
paul@6 1001
$Comp
paul@6 1002
L power:PWR_FLAG #FLG0109
paul@6 1003
U 1 1 62024BC2
paul@11 1004
P 10400 1400
paul@11 1005
F 0 "#FLG0109" H 10400 1475 50  0001 C CNN
paul@11 1006
F 1 "PWR_FLAG" V 10400 1528 50  0000 L CNN
paul@11 1007
F 2 "" H 10400 1400 50  0001 C CNN
paul@11 1008
F 3 "~" H 10400 1400 50  0001 C CNN
paul@11 1009
	1    10400 1400
paul@6 1010
	0    1    1    0   
paul@6 1011
$EndComp
paul@11 1012
Connection ~ 10400 1400
paul@6 1013
Wire Wire Line
paul@11 1014
	10400 1400 10400 1300
paul@6 1015
Text Notes 10050 1200 0    50   ~ 0
paul@6 1016
Note that KiCad gets upset\nwhen connecting passives\nto power input pins.
paul@11 1017
Text Notes 9600 5200 0    50   ~ 0
paul@11 1018
PAL value is 39pF,\nNTSC value is 56pF.
paul@11 1019
$Comp
paul@11 1020
L Jumper:Jumper_3_Bridged12 LK2
paul@11 1021
U 1 1 621C2C53
paul@11 1022
P 3600 5850
paul@11 1023
F 0 "LK2" V 3646 5917 50  0000 L CNN
paul@11 1024
F 1 "PAL/NTSC" V 3555 5917 50  0000 L CNN
paul@11 1025
F 2 "" H 3600 5850 50  0001 C CNN
paul@11 1026
F 3 "~" H 3600 5850 50  0001 C CNN
paul@11 1027
	1    3600 5850
paul@11 1028
	0    -1   -1   0   
paul@11 1029
$EndComp
paul@11 1030
Wire Wire Line
paul@11 1031
	3600 6400 3600 6100
paul@11 1032
Wire Wire Line
paul@11 1033
	3750 5850 3850 5850
paul@11 1034
Text GLabel 3500 5500 0    50   Input ~ 0
paul@11 1035
0V
paul@11 1036
Wire Wire Line
paul@11 1037
	3500 5500 3600 5500
paul@11 1038
Wire Wire Line
paul@11 1039
	3600 5500 3600 5600
paul@11 1040
Text Notes 5100 5700 0    50   ~ 0
paul@11 1041
Colour burst > 2.5??s
paul@11 1042
Text Notes 8050 5800 0    50   ~ 0
paul@11 1043
Not fitted for NTSC\n(presumably R50-R57, maybe also L1).
paul@11 1044
Text GLabel 9700 3100 3    50   Input ~ 0
paul@11 1045
0V
paul@11 1046
$Comp
paul@11 1047
L Device:C C?
paul@11 1048
U 1 1 624BA4A0
paul@11 1049
P 9700 2800
paul@11 1050
AR Path="/61DB955D/61DF7FF4/624BA4A0" Ref="C?"  Part="1" 
paul@11 1051
AR Path="/62411C42/624BA4A0" Ref="C24"  Part="1" 
paul@11 1052
F 0 "C24" H 9600 2750 50  0000 R CNN
paul@11 1053
F 1 "100nF" H 9600 2850 50  0000 R CNN
paul@11 1054
F 2 "" H 9738 2650 50  0001 C CNN
paul@11 1055
F 3 "~" H 9700 2800 50  0001 C CNN
paul@11 1056
	1    9700 2800
paul@11 1057
	-1   0    0    1   
paul@11 1058
$EndComp
paul@11 1059
Wire Wire Line
paul@11 1060
	9700 3100 9700 2950
paul@11 1061
$Comp
paul@11 1062
L Jumper:Jumper_2_Open LK5
paul@11 1063
U 1 1 6255E663
paul@11 1064
P 10100 2850
paul@11 1065
F 0 "LK5" V 10100 2948 50  0000 L CNN
paul@11 1066
F 1 "Jumper_2_Open" V 10145 2948 50  0001 L CNN
paul@11 1067
F 2 "" H 10100 2850 50  0001 C CNN
paul@11 1068
F 3 "~" H 10100 2850 50  0001 C CNN
paul@11 1069
	1    10100 2850
paul@11 1070
	0    1    1    0   
paul@11 1071
$EndComp
paul@11 1072
Wire Wire Line
paul@11 1073
	10400 2700 10500 2700
paul@11 1074
Text GLabel 10100 3100 3    50   Input ~ 0
paul@11 1075
0V
paul@11 1076
Wire Wire Line
paul@11 1077
	10100 3100 10100 3050
paul@11 1078
$Comp
paul@11 1079
L AcornElectron:UM1233-E36 SK4
paul@11 1080
U 1 1 621B02BC
paul@11 1081
P 10400 2150
paul@11 1082
AR Path="/61DB955D/61DF7FF4/621B02BC" Ref="SK4"  Part="1" 
paul@11 1083
AR Path="/62411C42/621B02BC" Ref="SK4"  Part="1" 
paul@11 1084
F 0 "SK4" H 10700 2200 50  0000 L CNN
paul@11 1085
F 1 "UM1233-E36" H 10700 2100 50  0000 L CNN
paul@11 1086
F 2 "" H 10400 2350 50  0001 C CNN
paul@11 1087
F 3 "" H 10400 2350 50  0001 C CNN
paul@11 1088
	1    10400 2150
paul@11 1089
	1    0    0    -1  
paul@11 1090
$EndComp
paul@11 1091
Text Notes 10600 1750 0    50   ~ 0
paul@11 1092
NTSC:\nUM1622 LA2/3
paul@11 1093
NoConn ~ 9700 2650
paul@11 1094
NoConn ~ 10100 2650
paul@11 1095
Text Notes 9700 2600 0    38   ~ 0
paul@11 1096
NTSC only\n(not connected)
paul@11 1097
$Comp
paul@11 1098
L power:PWR_FLAG #FLG0110
paul@11 1099
U 1 1 626E446F
paul@11 1100
P 3850 5550
paul@11 1101
F 0 "#FLG0110" H 3850 5625 50  0001 C CNN
paul@11 1102
F 1 "PWR_FLAG" V 3850 5678 50  0000 L CNN
paul@11 1103
F 2 "" H 3850 5550 50  0001 C CNN
paul@11 1104
F 3 "~" H 3850 5550 50  0001 C CNN
paul@11 1105
	1    3850 5550
paul@11 1106
	0    1    1    0   
paul@11 1107
$EndComp
paul@11 1108
Text Notes 3950 5500 0    50   ~ 0
paul@11 1109
KiCad workaround
paul@11 1110
Wire Wire Line
paul@11 1111
	3850 5300 3850 5550
paul@11 1112
Connection ~ 3850 5550
paul@11 1113
Wire Wire Line
paul@11 1114
	3850 5550 3850 5850
paul@24 1115
Text GLabel 2200 2100 0    50   UnSpc ~ 0
paul@24 1116
~CSYNC_UHF
paul@24 1117
Wire Wire Line
paul@24 1118
	2200 3300 4900 3300
paul@23 1119
Wire Wire Line
paul@24 1120
	2200 3100 5000 3100
paul@24 1121
Wire Wire Line
paul@24 1122
	2200 2900 5500 2900
paul@24 1123
Wire Wire Line
paul@24 1124
	8700 2100 2200 2100
paul@24 1125
Connection ~ 8700 2100
paul@0 1126
$EndSCHEMATC