This circuit is part of an oscilloscope project with the PC. Its purpose is to record a peak in a signal that is to be displayed. We found it in the Radio Electronics magazine of February 1990.
This loop antenna was found in a 1990s documentation. The circuit includes a field strength meter. The...
This power supply is protected from shorts in the load. The BD135 must be mounted on a heatsink...
By the components used this circuit of old English documentation can still be easily assembled. The...