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 8 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 R31 19 U 1 1 61DEE018 20 P 4250 2600 21 F 0 "R31" V 4150 2600 50 0000 C CNN 22 F 1 "3900R" V 4350 2600 50 0000 C CNN 23 F 2 "" V 4180 2600 50 0001 C CNN 24 F 3 "~" H 4250 2600 50 0001 C CNN 25 1 4250 2600 26 0 1 1 0 27 $EndComp 28 $Comp 29 L Device:R R32 30 U 1 1 61DEE01F 31 P 4550 2800 32 F 0 "R32" V 4450 2800 50 0000 C CNN 33 F 1 "1000R" V 4650 2800 50 0000 C CNN 34 F 2 "" V 4480 2800 50 0001 C CNN 35 F 3 "~" H 4550 2800 50 0001 C CNN 36 1 4550 2800 37 0 1 1 0 38 $EndComp 39 $Comp 40 L Device:R R33 41 U 1 1 61DEE026 42 P 4250 3000 43 F 0 "R33" V 4150 3000 50 0000 C CNN 44 F 1 "2200R" V 4350 3000 50 0000 C CNN 45 F 2 "" V 4180 3000 50 0001 C CNN 46 F 3 "~" H 4250 3000 50 0001 C CNN 47 1 4250 3000 48 0 1 1 0 49 $EndComp 50 $Comp 51 L Device:R R45 52 U 1 1 61DEE04E 53 P 4350 1500 54 F 0 "R45" V 4250 1500 50 0000 C CNN 55 F 1 "68R" V 4450 1500 50 0000 C CNN 56 F 2 "" V 4280 1500 50 0001 C CNN 57 F 3 "~" H 4350 1500 50 0001 C CNN 58 1 4350 1500 59 0 1 1 0 60 $EndComp 61 $Comp 62 L Device:R R46 63 U 1 1 61DEE055 64 P 4650 1700 65 F 0 "R46" V 4550 1700 50 0000 C CNN 66 F 1 "68R" V 4750 1700 50 0000 C CNN 67 F 2 "" V 4580 1700 50 0001 C CNN 68 F 3 "~" H 4650 1700 50 0001 C CNN 69 1 4650 1700 70 0 1 1 0 71 $EndComp 72 $Comp 73 L Device:R R47 74 U 1 1 61DEE05C 75 P 4350 1900 76 F 0 "R47" V 4250 1900 50 0000 C CNN 77 F 1 "68R" V 4450 1900 50 0000 C CNN 78 F 2 "" V 4280 1900 50 0001 C CNN 79 F 3 "~" H 4350 1900 50 0001 C CNN 80 1 4350 1900 81 0 1 1 0 82 $EndComp 83 Wire Wire Line 84 4200 1500 4000 1500 85 Connection ~ 4000 1500 86 Wire Wire Line 87 3900 1700 4500 1700 88 Wire Wire Line 89 4200 1900 3800 1900 90 Connection ~ 3800 1900 91 Wire Wire Line 92 3800 1900 3800 3000 93 $Comp 94 L Connector:DIN-6 SK2 95 U 1 1 61DEE06D 96 P 6300 1800 97 F 0 "SK2" H 6500 1600 50 0000 C CNN 98 F 1 "RGB" H 6500 1500 50 0000 C CNN 99 F 2 "" H 6300 1800 50 0001 C CNN 100 F 3 "http://www.mouser.com/ds/2/18/40_c091_abd_e-75918.pdf" H 6300 1800 50 0001 C CNN 101 1 6300 1800 102 1 0 0 -1 103 $EndComp 104 Wire Wire Line 105 4800 1700 6000 1700 106 Wire Wire Line 107 4500 1500 6300 1500 108 Text GLabel 6700 1900 2 50 Input ~ 0 109 0V 110 Text GLabel 6300 2200 3 50 Input ~ 0 111 5V 112 Wire Wire Line 113 6300 2200 6300 2100 114 Wire Wire Line 115 1000 1300 3700 1300 116 Wire Wire Line 117 3700 1300 6600 1300 118 Wire Wire Line 119 6600 1300 6600 1700 120 Connection ~ 3700 1300 121 $Comp 122 L Connector:Conn_Coaxial SK3 123 U 1 1 61DEE0F7 124 P 6300 2600 125 F 0 "SK3" H 6399 2576 50 0000 L CNN 126 F 1 "VIDEO" H 6399 2485 50 0000 L CNN 127 F 2 "" H 6300 2600 50 0001 C CNN 128 F 3 " ~" H 6300 2600 50 0001 C CNN 129 1 6300 2600 130 1 0 0 -1 131 $EndComp 132 Wire Wire Line 133 3900 2800 4400 2800 134 Connection ~ 3900 1700 135 Wire Wire Line 136 3800 3000 4100 3000 137 Wire Wire Line 138 4000 2600 4100 2600 139 Text GLabel 6300 2900 3 50 Input ~ 0 140 0V 141 Wire Wire Line 142 6300 2900 6300 2800 143 $Comp 144 L Device:R R39 145 U 1 1 61DEE107 146 P 4900 2350 147 F 0 "R39" H 4970 2396 50 0000 L CNN 148 F 1 "1000R" H 4970 2305 50 0000 L CNN 149 F 2 "" V 4830 2350 50 0001 C CNN 150 F 3 "~" H 4900 2350 50 0001 C CNN 151 1 4900 2350 152 1 0 0 -1 153 $EndComp 154 Wire Wire Line 155 6700 1900 6600 1900 156 Wire Wire Line 157 4500 1900 6000 1900 158 Text GLabel 4900 2100 1 50 Input ~ 0 159 5V 160 Wire Wire Line 161 4900 2100 4900 2200 162 $Comp 163 L Device:R R48 164 U 1 1 61DEE112 165 P 5500 2350 166 F 0 "R48" H 5570 2396 50 0000 L CNN 167 F 1 "68R" H 5570 2305 50 0000 L CNN 168 F 2 "" V 5430 2350 50 0001 C CNN 169 F 3 "~" H 5500 2350 50 0001 C CNN 170 1 5500 2350 171 1 0 0 -1 172 $EndComp 173 Text GLabel 5500 2100 1 50 Input ~ 0 174 5V 175 Wire Wire Line 176 5500 2200 5500 2100 177 $Comp 178 L Device:R R49 179 U 1 1 61DEE11B 180 P 5850 2600 181 F 0 "R49" V 5750 2600 50 0000 C CNN 182 F 1 "68R" V 5950 2600 50 0000 C CNN 183 F 2 "" V 5780 2600 50 0001 C CNN 184 F 3 "~" H 5850 2600 50 0001 C CNN 185 1 5850 2600 186 0 1 1 0 187 $EndComp 188 $Comp 189 L Device:R R40 190 U 1 1 61DEE122 191 P 5000 3050 192 F 0 "R40" H 5070 3096 50 0000 L CNN 193 F 1 "470R" H 5070 3005 50 0000 L CNN 194 F 2 "" V 4930 3050 50 0001 C CNN 195 F 3 "~" H 5000 3050 50 0001 C CNN 196 1 5000 3050 197 1 0 0 -1 198 $EndComp 199 $Comp 200 L bc309:BC309 Q8 201 U 1 1 61DEE129 202 P 5300 2800 203 F 0 "Q8" H 5491 2754 50 0000 L CNN 204 F 1 "BC309" H 5491 2845 50 0000 L CNN 205 F 2 "Package_TO_SOT_THT:TO-92_Inline" H 5500 2725 50 0001 L CIN 206 F 3 "https://www.futurlec.com/Transistors/BC309.shtml" H 5300 2800 50 0001 L CNN 207 1 5300 2800 208 1 0 0 1 209 $EndComp 210 Wire Wire Line 211 6100 2600 6000 2600 212 Wire Wire Line 213 5400 2600 5500 2600 214 Wire Wire Line 215 5500 2600 5500 2500 216 Connection ~ 5500 2600 217 Wire Wire Line 218 5500 2600 5700 2600 219 Wire Wire Line 220 4400 2600 4800 2600 221 Wire Wire Line 222 5100 2600 5100 2800 223 Wire Wire Line 224 4900 2600 4900 2500 225 Connection ~ 4900 2600 226 Wire Wire Line 227 4900 2600 5000 2600 228 Wire Wire Line 229 5000 2900 5000 2600 230 Connection ~ 5000 2600 231 Wire Wire Line 232 5000 2600 5100 2600 233 $Comp 234 L Device:R R34 235 U 1 1 61DEE13D 236 P 4550 3200 237 F 0 "R34" V 4450 3200 50 0000 C CNN 238 F 1 "1000R" V 4650 3200 50 0000 C CNN 239 F 2 "" V 4480 3200 50 0001 C CNN 240 F 3 "~" H 4550 3200 50 0001 C CNN 241 1 4550 3200 242 0 1 1 0 243 $EndComp 244 Wire Wire Line 245 3700 3200 4400 3200 246 Wire Wire Line 247 4800 2600 4800 2800 248 Wire Wire Line 249 4800 3200 4700 3200 250 Connection ~ 4800 2600 251 Wire Wire Line 252 4800 2600 4900 2600 253 Wire Wire Line 254 4400 3000 4800 3000 255 Connection ~ 4800 3000 256 Wire Wire Line 257 4800 3000 4800 3200 258 Wire Wire Line 259 4700 2800 4800 2800 260 Connection ~ 4800 2800 261 Wire Wire Line 262 4800 2800 4800 3000 263 Text GLabel 5000 3300 3 50 Input ~ 0 264 0V 265 Wire Wire Line 266 5000 3300 5000 3200 267 Text GLabel 5400 3300 3 50 Input ~ 0 268 0V 269 Wire Wire Line 270 5400 3300 5400 3000 271 Text GLabel 1000 1300 0 50 Input ~ 0 272 ~CSYNC 273 Text GLabel 1000 1500 0 50 Input ~ 0 274 BLUE 275 Text GLabel 1000 1700 0 50 Input ~ 0 276 GREEN 277 Text GLabel 1000 1900 0 50 Input ~ 0 278 RED 279 Wire Wire Line 280 4000 1500 4000 2600 281 Wire Wire Line 282 3900 1700 3900 2800 283 Wire Wire Line 284 1000 1500 4000 1500 285 Wire Wire Line 286 1000 1700 3900 1700 287 Wire Wire Line 288 1000 1900 3800 1900 289 Wire Wire Line 290 3700 1300 3700 3200 291 $Comp 292 L Jumper:Jumper_2_Open LK4 293 U 1 1 62416A28 294 P 4500 4000 295 F 0 "LK4" H 4500 4235 50 0000 C CNN 296 F 1 "NF" H 4500 4144 50 0000 C CNN 297 F 2 "" H 4500 4000 50 0001 C CNN 298 F 3 "~" H 4500 4000 50 0001 C CNN 299 1 4500 4000 300 1 0 0 -1 301 $EndComp 302 Wire Wire Line 303 4700 4000 4800 4000 304 Wire Wire Line 305 4800 4000 4800 3200 306 Connection ~ 4800 3200 307 Text GLabel 4200 4000 0 50 Input ~ 0 308 UHF_IN 309 Wire Wire Line 310 4200 4000 4300 4000 311 Text Notes 3900 4200 0 50 ~ 0 312 For optional link from UHF circuit. 313 $EndSCHEMATC