With this circuit it is possible to obtain a higher voltage from a zener diode. The circuit is from a 1970’s EEE. The device used as a constant current source is uncommon today.
We found this circuit in a 1967 Electronics World. It analyzes a transistor by determining its...
This circuit monitors the output level of an amplifier. The circuit is set to R4 and can be...
Originally designed for an incandescent lamp, this flasher or pulser can be adapted to operate with...