This commercial transistor radio was manufactured by RCA in the 1960s. The circuit has only 4 transistors and is powered by a voltage of 9 V with an audio power of 20mW.
This mini siren, found in a 2003 publication, powers a small piezoelectric transducer, but a...
In the figure we have the way to implement a sinusoidal oscillator with the 4093 IC. The component...
This circuit can be used in a single optical link or optical communication system and even using an...