1 EESchema Schematic File Version 4 2 LIBS:AcornElectronMainboard-cache 3 EELAYER 26 0 4 EELAYER END 5 $Descr A4 11693 8268 6 encoding utf-8 7 Sheet 5 9 8 Title "" 9 Date "" 10 Rev "" 11 Comp "" 12 Comment1 "" 13 Comment2 "" 14 Comment3 "" 15 Comment4 "" 16 $EndDescr 17 $Comp 18 L Device:R R? 19 U 1 1 61EC8808 20 P 1600 2350 21 AR Path="/61EC8808" Ref="R?" Part="1" 22 AR Path="/61E9B87F/61EC8808" Ref="R63" Part="1" 23 F 0 "R63" H 1670 2396 50 0000 L CNN 24 F 1 "1000R" H 1670 2305 50 0000 L CNN 25 F 2 "" V 1530 2350 50 0001 C CNN 26 F 3 "~" H 1600 2350 50 0001 C CNN 27 1 1600 2350 28 1 0 0 -1 29 $EndComp 30 Wire Wire Line 31 1400 2600 1600 2600 32 Wire Wire Line 33 1600 2600 1600 2500 34 $Comp 35 L bc213:BC213 Q? 36 U 1 1 61EC8848 37 P 3300 2900 38 AR Path="/61EC8848" Ref="Q?" Part="1" 39 AR Path="/61E9B87F/61EC8848" Ref="Q4" Part="1" 40 F 0 "Q4" H 3491 2946 50 0000 L CNN 41 F 1 "BC213" H 3491 2855 50 0000 L CNN 42 F 2 "Package_TO_SOT_THT:TO-92_Inline" H 3500 2825 50 0001 L CIN 43 F 3 "https://www.futurlec.com/Transistors/BC213L.shtml" H 3300 2900 50 0001 L CNN 44 1 3300 2900 45 1 0 0 1 46 $EndComp 47 $Comp 48 L bc183:BC183 Q? 49 U 1 1 61EC884F 50 P 3300 2300 51 AR Path="/61EC884F" Ref="Q?" Part="1" 52 AR Path="/61E9B87F/61EC884F" Ref="Q3" Part="1" 53 F 0 "Q3" H 3491 2346 50 0000 L CNN 54 F 1 "BC183" H 3491 2255 50 0000 L CNN 55 F 2 "Package_TO_SOT_THT:TO-92_Inline" H 3500 2225 50 0001 L CIN 56 F 3 "https://www.futurlec.com/Transistors/BC182L.shtml" H 3300 2300 50 0001 L CNN 57 1 3300 2300 58 1 0 0 -1 59 $EndComp 60 $Comp 61 L Device:R R? 62 U 1 1 61EC8856 63 P 4750 2600 64 AR Path="/61EC8856" Ref="R?" Part="1" 65 AR Path="/61E9B87F/61EC8856" Ref="R61" Part="1" 66 F 0 "R61" V 4650 2600 50 0000 C CNN 67 F 1 "47R" V 4850 2600 50 0000 C CNN 68 F 2 "" V 4680 2600 50 0001 C CNN 69 F 3 "~" H 4750 2600 50 0001 C CNN 70 1 4750 2600 71 0 1 1 0 72 $EndComp 73 Wire Wire Line 74 3400 2700 3400 2600 75 Wire Wire Line 76 3400 2600 4600 2600 77 Connection ~ 3400 2600 78 Wire Wire Line 79 3100 2300 3000 2300 80 Wire Wire Line 81 3000 2300 3000 2600 82 Wire Wire Line 83 3000 2900 3100 2900 84 Wire Wire Line 85 1600 2600 3000 2600 86 Connection ~ 1600 2600 87 Connection ~ 3000 2600 88 Wire Wire Line 89 3000 2600 3000 2900 90 Wire Wire Line 91 3400 2600 3400 2500 92 $Comp 93 L Device:CP C? 94 U 1 1 61EC8868 95 P 4050 2400 96 AR Path="/61EC8868" Ref="C?" Part="1" 97 AR Path="/61E9B87F/61EC8868" Ref="C25" Part="1" 98 F 0 "C25" V 4300 2400 50 0000 C CNN 99 F 1 "22??F/16V" V 4200 2400 38 0000 C CNN 100 F 2 "" H 4088 2250 50 0001 C CNN 101 F 3 "~" H 4050 2400 50 0001 C CNN 102 1 4050 2400 103 0 -1 -1 0 104 $EndComp 105 $Comp 106 L Device:R R? 107 U 1 1 61EC886F 108 P 4050 2000 109 AR Path="/61EC886F" Ref="R?" Part="1" 110 AR Path="/61E9B87F/61EC886F" Ref="R66" Part="1" 111 F 0 "R66" V 3843 2000 50 0000 C CNN 112 F 1 "10R" V 3934 2000 50 0000 C CNN 113 F 2 "" V 3980 2000 50 0001 C CNN 114 F 3 "~" H 4050 2000 50 0001 C CNN 115 1 4050 2000 116 0 1 1 0 117 $EndComp 118 Wire Wire Line 119 3900 2400 3800 2400 120 Wire Wire Line 121 3800 2400 3800 2000 122 Wire Wire Line 123 3800 2000 3900 2000 124 Text GLabel 3400 3200 3 50 Input ~ 0 125 0V 126 Wire Wire Line 127 3400 2100 3400 2000 128 Wire Wire Line 129 3400 2000 3800 2000 130 Connection ~ 3800 2000 131 Text GLabel 4300 2000 2 50 Input ~ 0 132 5V 133 Text GLabel 4300 2400 2 50 Input ~ 0 134 0V 135 Wire Wire Line 136 4200 2000 4300 2000 137 Wire Wire Line 138 4200 2400 4300 2400 139 $Comp 140 L Device:CP C? 141 U 1 1 61EC8881 142 P 5250 2600 143 AR Path="/61EC8881" Ref="C?" Part="1" 144 AR Path="/61E9B87F/61EC8881" Ref="C11" Part="1" 145 F 0 "C11" V 5500 2600 50 0000 C CNN 146 F 1 "10??F/35V" V 5400 2600 38 0000 C CNN 147 F 2 "" H 5288 2450 50 0001 C CNN 148 F 3 "~" H 5250 2600 50 0001 C CNN 149 1 5250 2600 150 0 -1 -1 0 151 $EndComp 152 Wire Wire Line 153 4900 2600 5100 2600 154 $Comp 155 L Device:Speaker SPKR? 156 U 1 1 61EC8889 157 P 5900 2600 158 AR Path="/61EC8889" Ref="SPKR?" Part="1" 159 AR Path="/61E9B87F/61EC8889" Ref="SPKR1" Part="1" 160 F 0 "SPKR1" H 6069 2596 50 0000 L CNN 161 F 1 "16R" H 6069 2505 50 0000 L CNN 162 F 2 "" H 5900 2400 50 0001 C CNN 163 F 3 "~" H 5890 2550 50 0001 C CNN 164 1 5900 2600 165 1 0 0 -1 166 $EndComp 167 Wire Wire Line 168 5400 2600 5700 2600 169 Text GLabel 5600 2700 0 50 Input ~ 0 170 0V 171 Wire Wire Line 172 5600 2700 5700 2700 173 Wire Wire Line 174 3400 3200 3400 3100 175 Text GLabel 1700 2100 2 50 Output ~ 0 176 SOUND_OUTPUT_EXPANSION 177 Wire Wire Line 178 1600 2200 1600 2100 179 Wire Wire Line 180 1600 2100 1700 2100 181 Text GLabel 1400 2600 0 50 Input ~ 0 182 SOUND_OUTPUT 183 $EndSCHEMATC