Low Voltage Test (CB22158E)

This is a simple voltage tester for voltages from about 2V to about 15V with the indicated resistor and red LEDs.

OR function with the 4011 (CB16067E)
The OR function has the truth table shown next to the diagram in the figure. We have the output at...
3 and a half digit LCD converter (CB4912E)
The component used in this circuit is not very common today as the circuit is from the 80's. It...
Flip Flop Neon (CB23610E)
This is a basic flip flop circuit with neon lights. We found it in a Radio Electronics magazine from...