We present the circuit of the commercial transistor tester Sanwa SC2 sold in Japan in the 1960s. The circuit has several scales and types of test being powered by a 22.5 V battery.
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...