![]() The place to send current to the base activates the photon transistor from the striking light. Whereas a photoresistor is capable of generating a current due to a change in resistance.Ī phototransistor is a type of transistor whose base terminal is open. Also, this is capable of producing both current and voltage. The phototransistor acts in the same way as the photoresistor commonly known as LDR i.e. Phototransistors are capable of converting light energy into electrical energy. Due to which this has a huge advantage and due to its low cost, phototransistors are used in many applications. This is done by light instead of electric current. Phototransistors are widely used to detect light pulses and convert them into digital electrical signals. ![]() When light falls at a junction a reverse current flows which are proportional to the luminance. ![]()
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January 2023
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