The L1 coil is formed by 4 turns of wire 20 in the form of 0.5 to 0.6 cm without core. The circuit is from an 80's documentation. The range reaches a few tens of meters.
This circuit was suggested by Analog Devices in 1980s documentation. The circuit has a grounded...
With this power supply it is possible to use automotive devices with currents up to about 8A on the...
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...