Found in a 1965 General Electric circuit manual, this circuit uses SCRs from that time. Modern equivalents according to the power can be used.
We found this circuit in a 1980s American documentation. The operational amplifiers of the...
This input circuit for an oscilloscope was found in Radio Electronics from the 90s. The operating...
This circuit emits a sound when a magnetic field, of a magnet, for example, approaches the sensor....