The figure shows how to use an operational circuit as a voltage divider. The circuit is from a Radio Electronics magazine from June 1986. The reference voltage is given by a zener diode.
This preamplifier for magnetic cartridges was found in the February 1990 issue of Radio...
This oscillator for receiving SSB signals is intended for receivers with IF of 455 kHz. The...
This simple transmitter for the citizen range was obtained in a 1983 publication and has only one...