The purpose of this 1965 Radio Electronics circuit is to help observe cycloid waveforms on an oscilloscope. The circuit uses only passive components.
This loop antenna was found in a 1990s documentation. The circuit includes a field strength meter. The...
The previous circuit (CB5050E) triggers when the temperature exceeds the limit set on the...
In this circuit a 12 V lamp or LED blinks with the music signal applied to the input. R depends on...