Extend your PC using these circuits
Make your own Half Duplex Ethernet hub using several diodes and nothing more.... [read]
This circuit is adapter for PC which enables you to use electret microphones. It's an audio amplifier made of two BC547C.... [read]
This is circuit diagram of a fully isolated interface allowing computer control of the Trio/Kenwood R5000 receiver.... [read]
This system, composed of two opto-insulated circuits, allows the data transmission per infra-red network device between two computers. For example, someone... [read]
The circuit of A-to-D converter shown here is configured around ADC 0808, avoiding the use of a microprocessor. The ADC 0808 is an 8-bit A-to-D converter,... [read]