This circuit is valid for other comparators of the same series. In this case, a lamp is excited, but an LED can be used in series with a resistor or other load. The transistor admits equivalent.
In this circuit, the LED Will blink in a presence of na áudio signal in the input. Gain is...
This synthesizer circuit was found in a Radio Electronics magazine from May 1983. The circuit uses...
This circuit was found in a documentation of the 70s. The circuit uses an integrated that is not...