This circuit is suitable for the calibration of old analog oscilloscopes. It was found in documentation from the 1970s and could be useful if someone is recovering an oscilloscope of the time.
The integrated circuit in this application is from the 80's, not being common nowadays. It...
This small transmitter can send its signals to a receiver placed at distances up to 100 m. The...
This circuit is from an ancient American documentation. The coil is frequency dependent and the...