Michael Siegenthaler
Home Photos Projects Resume


Thermostat Driver

Parallel Port FPGA Interface

GPIB to TCP/IP Gateway

Remote Server Manager

Network Interface Box

120V Relay Box

Temperature Sensor

TCP/UDP Debugging Tools

120 Relay Box

This device contains 4 relays, each controlling one 120V AC socket. The AC input is through a standard IEC power cord, as used on computers, and the control input is a DB9 connector that ties in to my Interface Box. I use the relays to control lights in my room.

Complete unit

Board with transistors, LED status indicators, and signal input port

Top view without cover