This circuit was originally intended for reading movie soundtracks. The circuit is from 1967 and was found in an English publication. The sensor is semiconductor type.
This simple transmitter for the AM range was found in a Popular Electronics magazine from March...
This circuit was found in a 2005 Linear Technology application manual. The circuit can be used...
This circuit was used to regulate the speed of small DC motors of cassette recorders. However, if the...