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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Volume limiter (CB25287E)
This circuit for audio signals was found in the March 1990 Radio Electronics magazine. The circuit...
Sinusoidal Oscillator 4093 (CB21123E)
In the figure we have the way to implement a sinusoidal oscillator with the 4093 IC. The component...
Complementary Transistors Monostable (CB19362E)
Equivalent transistors, like the BC548 and BC558 pair can be used in this circuit that we find in an...