This oscillator can generate 2 to 10 MHz signals and was found in an American 1980s documentation. The circuit is stable and its supply voltage is 5 V.
This indicator for audio signals uses only 3 components. LEDs are common and the audio signal with...
This circuit was published in an article in Radio Electronics magazine in October 1988. It uses...
In the figure we have a circuit where two 555 operating one as astable and the other as monostable...