ZX Spectrim 128 +3 composite video output and drive belt replacement – Ask Notes,schematics - FM transmitter design? - Electrical Engineering Stack Exchange,SPI 25xx EPROM programmer BIOS009 PIC,support 0.98d12,promotion clip PLCC32+SOIC | eBay,amplifier - What is the purpose of the 10K resistor that is connected across the input and the supply? - Electrical Engineering Stack Exchange,Transistor 2n3904 Datasheet | PDF | Bipolar Junction Transistor | Transistor