Suggested by the 90s ARRL Handbook edition, this circuit aims to reduce or cancel noise at the reception of a telecommunications receiver.
This 600 W reducer uses SCRs and a switching system. The circuit is from Motorola's 1975...
In the figure we show how to use common diodes to get a reference near 3 V in a car gearbox. The...
This circuit using the newly released HA2400 was found in the March 1980 Radio Electronics...