Symmetrical Inverter (CB6647E)

This circuit reverses the signal if both positive and negative. We found it in an American documentation from 1969.

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Watch desmagnetizer (CB23727E)
Old mechanic watches were easily magnetized, presenting operational problems. The circuit shown is a...
Twin-T Oscillator (MSB031)
This circuit generates sine low-frequency signals. The frequency depends on the twin-T network....
High Power Flasher (CB16332E)
Here is another project that is based on an astable multivibrator, in a demonstration of the...