SCR crowbar (CB8481E)

Found in a 90s American documentation, this circuit trips when there is an overvoltage at its output. The SCR can be any general purpose.

| Clique na imagem para ampliar |

Instrumentation Amplifier (CB4230E)
The purpose of this 1-transistor amplifier is to allow the use of a milliammeter in an application...
Under and Overvoltage Indicator (CB14977E)
This circuit causes one LED to light up if the voltage falls below the value set in R3 and the...
Digital Capacitor Meter (CB17506E)
This circuit was found in a 1986 documentation and it may be difficult to obtain some of its...