We found this circuit in an American publication from the 90s. It generates pulses that can be modulated in amplitude. The supply can be done by voltages from 5 to 12 V and the frequency depends on C1 and C2.
This oscillator provides a 1 MHz rectangular signal determined by the capacitors used. The circuit...
Using the ICM7555, CMOS version of the 555, this circuit produces a 1 kHz signal. The circuit has...
We found this circuit generates signals from 200 Hz to 62 kHz and can be used to repel mosquitoes and...