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 retriggers when a new pulse arrives. It does this by discharging the capacitor. The...
This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to...
This voltage regulator was obtained in the SGS manual of linear integrated circuits of 1982. The...