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 was found in an American documentation from 1968. The circuit generates ladder-shaped...
This circuit keeps an LED on briefly when S1 is pressed. The time depends on C1. The circuit is...
This circuit was found in old documentation, but it adapts perfectly to modern applications with...