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.
We found this circuit in a publication from the 1980s. It can function as a touch switch and if...
The figure shows how to implement an inverter trigger using the LM3900. The LM3900 is a NORTON...
In this circuit we have the way to obtain a pseudo sequential effect of LEDs using 3 FETs. The...