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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DC to DC SMPS (CB9669E)
This circuit was found in an American documentation from the 80's. The components are from that...
Optical Power Modulator (CB14676E)
The circuit shown is from the Texas Instruments optoelectronics manual. It is intended for audio...
LED drive I (CB18890E)
This circuit drive an LED with constant current determined by the values of the resistors of 10...