Using a DAC038 IC this circuit is from Radio Electronics from May 1983. The circuit must be powered with a 5 V source and uses common operating outputs.
With the coded activation of the relays, it is possible to control which of the 16 outputs...
The integrated circuit used in this application is not very common. Transistors and resistors...
This simple circuit makes use of neon lamps to indicate the voltage of a power grid. The lamps are...