Photodiode is a type of diode that the resistance value change if the light falling on diode capricious dark intensitasnya.Dalam tahanannya value is so large that practically no current mengalir.Semakin strong light falling on the diode, the smaller the value of the prisoner, so the greater the current flowing. If the pn junction photodiode reverse voltage is irradiated, the flow will vary linearly with the increase in light flux imposed at the junction tersebut.Photodioda made of a semiconductor material.
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