Basic Latch (CB7981E)

This circuit can be applied to several logics. The circuit is from an Electronics Now from the 90s, using two push-buttons.

Hartley Oscillator (CB19577E)
The frequency of this oscillator depends on T, which for the audio band can be a common output...
3-Range FET Voltmeter (CB25570E)
This circuit can work with almost any JFET. The circuit is from an Electronics Now from April...
Simple VCO (CB8745E)
This voltage-controlled oscillator uses components that are still common in our market. The...