Majority Logic (CB25042E)

This circuit is from Radio Electronics from April 1987. The circuit is powered with voltages that depend on the logic to be excited.

Fan Control III (CB12746E)
Analyzing the circuit shown in the figure we see that the difference in relation to the others is in...
Tuning Remote Control (CB15735E)
With this circuit, we can have a remote frequency control of a tuned circuit. Lx is the coil of...
Frequency Base 555 (CB24503E)
This mains-synchronized circuit produces a simple 1 pulse per second. The circuit is from a Radio...