Schmitt Trigger 7400 (CB22419E)

This low hysteresis circuit was obtained from old documentation. The circuit must be powered by a voltage of 5 V.

1-Transistor MW Radio (CB18839E)
This simple transistorized radio for listening on a crystal phone was found in a Japanese...
Mini VHV Generator (CB17097E)
This very high voltage generator (VHV) uses a 555 and a power transistor with a heat sink. The...
Protection circuit with manual reset (CB8366E)
Found in a 1969 documentation, this circuit is reset by a push button. The activation time is 100...