This circuit was found in a 90s Radio Electronics. MOSFETs must have excellent heat sinks and heat and the board layout carefully planned to withstand high currents.
This circuit was obtained in an old Argentine publication, using germanium transistors and...
This circuit was originally found in a Philips documentation from 1969. It is intended for sensing...
Found in old documentation, this simple test checks both the polarity and the existence of voltage...