Paraphase amplifier (T389E)

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

Light Sensor (CB5973E)
This circuit can use any comparator or even an operational amplifier. We can use the LM339 and the...
Ultra Precise Delay Circuit (CB5152E)
This circuit is from an 80's American documentation. The circuit uses components of the time which...
Operational Pulse Generator (CB19092E)
The pulse duration is determined by the 100k resistor and the separation by the 1M resistor. The...