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.
July 13, 2015 - Mouser Electronics, Inc. today announced that it has signed a global distribution...
This circuit serves as the basis for an infrared audio link, using a remote sound for a wireless...
This circuit is from an 80's component manual. However, the circuit may be of a modern equivalent...