Overvoltage Indicator (CB22007E)

Using a CA3130 operational amplifier, this circuit drives an LED when the voltage exceeds the value set in VR1.

SCR Motor Control (CB19377E)
The diagram, obtained in an old European documentation, shows the ways to trigger and to shut down...
Three Phase AC Motor Control (CB12953E)
In the figure we have a three-phase AC motor control for voltages up to 600 V or 1200 V depending on...
Digitally Controlled Audio Switch (CB15550E)
This shield circuit can serve as a basis for a digital mixer or simply for a switch without noise...