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 circuit uses common transistors for a fault indicator that turns on an LED and provides an...
The sensor of this circuit is a common silicon diode and it directly drives a small cooler with a...
This circuit found in a documentation of the 90s, uses integrated common at the time, but...