This 1-transistor circuit for currents up to 50 mA was found in the August 1974 Radio Electronics magazine. The transformer is 50 to 200 mA.
This circuit shown in the figure produces a pulse of constant duration at its output, of the order...
Silicon Labs CSP Package EFM32™ Leopard Gecko 32-Bit MCUs are part of the world's most energy...
This circuit was suggested by Philips in an old publication. The coils, made with wire 14 to 16...