This electronic Morse Key for telegraph message transmission was found in an American 1980s amateur radio documentation. The circuit uses TTL technology and must be powered by a 5V voltage.
We found this circuit in an American 1980s documentation. The circuit uses a piezoelectric transducer...
A ring and pendulum of stripped wires form the sensor for this alarm. Once triggered, to reset, you...
Other operational amplifiers in the series, such as the MC34072, MC34074, MC35071, MC35072,...