This amplifier for the 10 m (30 MHz) band has a gain of 12 to 15 dB having been found in an American documentation. Other RF transistors can be used like 2N2222 or 2N2218.
The purpose of this circuit is to produce a quick discharge on a shorted battery to attempt its...
This circuit can be connected to the output of alarms or sirens with the 555, CMOS or TTL,...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...