This circuit was found in an American magazine 73 for radio amateurs of the 80s. It is an automatic transmission circuit for telegraphy. The circuit is TTL.
We found this circuit with transistors in a Philips documentation from 1968. The double transistor...
This circuit, from the ON Semiconductor Thyristor Manual, controls both the speed and direction of...
This circuit was found in a 1978 American publication. It beeps if the car's lights are on and the...