Found in a 1988s Radio Electronics, this circuit uses transistors of general use to increase the intensity of signals up to about 30 MHz. The power can be done by battery because the consumption is low.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
Using a 100 uH inductor for L1, this circuit will oscillate around 1 MHz. The frequency will be...
This low current solenoid driver was found in an ancient American documentation. The solenoid must be...