This circuit is from a 1980s Motorola documentation. The circuit can be set to fire from 60 to 120 V DC or from 42 to 84 V AC. The circuit has a forehead button that activates an indicator lamp.
With this circuit we can use a high impedance source to excite a low impedance output. The input is...
This circuit was found in a 90s Electronic Engineering. The circuit has the tube's critical...
Found in documentation from the 1980s, this circuit can have several adaptations to use modern...