ڪئپيسٽر ڊائيوڊ ٽرانسسٽرس آ سيز پوٽينشو ميٽررس ايل اي ڊيز سوئچز بيٽريز پروٽو يا بريڊو يا فوٽو بورڊس نگيٽو (ڪاري) پازيتو (ڳاڙهي) تارون
ٻيو سرڪٽ Parts List: 555 Timer IC 1K ohm - 1/4 Watt resistor 10K ohm - 1/4 Watt resistor 1M ohm - 1/4 Watt resistor 10uF electrolytic capacitor 0.01uF ceramic disc capacitor Small Speaker 9V battery connector This last circuit is using a 555 timer chip to make noise using a speaker. What is happening is that the configuration of components and connections on the 555 chip is causing pin 3 to oscillate rapidly between high and low. If you were to graph these oscillations, it would look like a square wave (a wave the alternates between two power levels). This wave then rapidly pulses the speaker, which displaces air at such a high frequency that we hear this as a steady tone of that frequency.
