Remote control latch (CB7240E)

This circuit was found in a 1967 Electronics World. SCRs are according the controller load, eventually equipped with heat sinks

Diode Test with Oscilloscope (CB4160E)
The circuit shown enables dynamic diode testing with an oscilloscope. We found this configuration in a...
Oscillator with the 567 (CB5921E)
In the figure we have the way to implement an adjustable active cycle oscillator using PLL 567....
10 W-Transistor Amplifier II (CB998E)
We found this amplifier in a 1990 documentation. The transistors are common, having been made...