Paraphase amplifier (T389E)

This 6C5 tube circuit was found in a modern tube design manual. The circuit applies to other equivalent triodes.

Field intensity meter (CB7365E)
Found in a 1966 publication, this circuit is a simple version of a field strength meter. The diode...
Texas Instruments SN74HCS32 Q1 2-input OR gate
Texas Instruments SN74HCS32 Q1 2-input OR gate This Texas Instruments integrated circuit has 4...
Programmable Gate (CB5322E)
This interesting 80's logic circuit consists of a gate that can be programmed according to the...