Dialing detector (CB9304E)

This circuit was found in GE documentation from the 90s. The circuit can be used as a shield for telephone lines.

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VHV generator (CB17617E)
This circuit generates very high voltages using an old TV flyback. The transformer has a secondary of...
Small Transistor Amplifier (CB20307E)
This fraction watt amplifier uses transistors that are still quite common in our market. The power...
Switching for EMG (CB7373E)
This circuit was obtained in documentation on medical applications from 1966. The circuit is used in...