Square sawtooth converter (CB8926E)

We found this circuit in a 1967 American documentation. The diodes are general-purpose and the input frequency can be between 80 and 800 Hz.

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Clapp Oscillator (CB25316E)
This transistorized oscillator, a modification of the Colpitts oscillator, was found in the...
Photometer Using the CA3140 (CB433)
This circuit uses a CA3140, an operational amplifier with FETs in the input stages. Equivalent can be...
Signal Injector and Tracer (CB3917E)
This signal injector and tracer (follower) was found in an old American documentation. The...