Found in an Electronics World of 1969, this circuit causes a light bulb to flash along with the audio signal applied to the input. The circuit only works with incandescent lamps. C can be 47 nF to 220 nF.
This amplifier can be powered with voltages between 2 and 5 V with power up to 100 mW. The minimum...
As part of a larger project, we found this modulation meter in the August 1994 Electronics Now...
This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The...