We found this circuit generates signals from 200 Hz to 62 kHz and can be used to repel mosquitoes and mosquitoes. The circuit can be powered from 2 small batteries to 9 V battery.
This FM micro transmitter was found in an 80s spy book. The circuit can work with equivalent FETs...
Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 d...
This circuit was obtained in a General Electric documentation from the 80's, and can be used as a...