PLL (CB7971E)

This common operational PLL circuit was found in a Popular Electronics 90’s. The power supply need not be symmetrical.

Electronic Switch (CB16908E)
This circuit controls a relay in a bistable way by touching the sensors type NF (CH3) and NO...
Multi Tone Siren (CB436)
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
Relaxation Oscillator Using PUT (MSB075E)
This is a simulation of a Relaxation Oscillator using a programmable unijunction transistor (PUT). The...