This circuit generates a strong audio tone that scares away mosquitoes. Care must be taken that, due to its potency, it can also cause discomfort to very close people and domestic animals.
This circuit was obtained from a 1978 Practical Wireless. It generates a low frequency, low...
This conventional LED effects circuit uses integrated CMOS. Today we can achieve the same effects...
This small blocking oscillator for approximately 1000 Hz was found in an American documentation from the...