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RC square wave generators

The article contains schemes of three non-standard, but simple frequency-controlled RC square wave generators, made on transistors of structure p–n–p and n–p–n. The number of options for rectangular pulse generators, according to the most conservative estimates, is more than one hundred. However, on the pages of periodical… Continue Reading

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Simple step voltage generator

According to the principle of operation, the device is similar to that described in Radio. – 1974. – №5. – S.40, but instead of avalanche transistors, which are currently practically not applied, used modern dinistors. capacitor C1 (Fig.1) periodically charged through resistors R1, R2 and upon reaching… Continue Reading

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Zero Crossing Detector

Zero Crossing Detector

When constructing a phase control circuit, information is needed on the moments when the mains voltage passes through zero. The presented zero detector circuit will help to do this very accurately., additionally indicating the direction of passage. Scheme When constructing a control system, information is required on the moment of transition through zero. Submitted… Continue Reading