This RF circuit measures transmission power from 0.25 W to 10 W. The maximum frequency depends on the diode and the gauge is an analog instrument. A multimeter can be used instead.
This battery charger was found in the Electronics Experimenter Special Projects of 1983. The...
This circuit is from an English magazine of 1974, but can still be assembled with the replacement of...
Motors up to 2 A DC can be controlled by this circuit that we find in the manual for linear...