This 1 A circuit was found in a Philips documentation from 1966. The transistor is of the time, but a modern transistor of equivalent power can be used.
This conventional oscillator with the 741 can be precisely adjusted to produce a 400 Hz signal. The...
Rectangular signals up to a few hundred kilohertz can be generated with this circuit, which is...
This circuit distorts the voice of the speaker to the microphone thus making it difficult to...