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.
Connected to the low current input of a standard multimeter, this circuit enables the reading of...
This crystal oscillator circuit for equipment calibration, generates a 100 kHz signal from a 1 MHz...
We found this circuit in a 1998 documentation. The circuit can be made with 12 V, 6 V or even 5 V...