Indicated for discriminators adjustment in FM and VHF receivers, this circuit was found in a 90s 73 magazine for radio amateurs. The operational amplifier can be a general-purpose type.
September 2017 - Digi International's SX 868 RF modules for low-power 868 MHz CE / RED operation...
This timer was found in the Texas Instruments 1996 linear applications manual. The relay must be...
We found this circuit in Motorola's Linear Databook in 1990. The integrated circuit used is no...