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 find this circuit in a documentation for engineers from 1971. The circuit generates rectangular and...
This 1/2 hertz high selectivity filter was found in the December 1990 issue of Radio Electronics...
Connected to the low current input of a standard multimeter, this circuit enables the reading of...