This circuit from a 90s Popular Electronics, decodes the old analog TV signal. It works with a pilot frequency of 15 734 kHz from the scanning system.
This circuit is of an old Argentine magazine of the 70's. The difficulty for its assembly is in...
This passive circuit was found in a 1980s documentation. The circuit serves to indicate the...
In the figure we have the way to implement a monostable with an operational amplifier LM393. The...