This dual-tuned 60 Hz oscillator was found in the Radio Experimenter Special projects of 1993. The circuit has the timing ranges given by C1 which can be changed.
We found this simple warning circuit for car blinkers (arrow) in a 1987 publication. The relay must...
Based on common operational amplifiers, this circuit was found in Texas Instruments documentation. The power...
This circuit, found in US documentation, can measure the power of transmitters up to 10 W, given...