Then to summarise when using a Transistor as a Switch. Transistor switches can be used to switch and control lamps, relays or even motors. When using bipolar transistors as switches they must be fully "OFF" or fully "ON". Transistors that are fully "ON" are said to be...
https://www.khanacademy.org/science/in-in-class-12th-physics-india/in-in-semiconductors译自印度可汗学院物理课:半导体Semiconductors,第二十九节(最后一节),晶体管开关本节介绍了作为开关使用的晶体管的工作特性图文描述,直观易懂,有想学习半导体相关知识的同
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Transistor as a switchdoi:10.1016/B978-0-7506-0222-8.50037-5Keith BrindleyNewnes Electronics Assembly Pocket Book
Transistor as a switchMiddleton, Brandon
Therefore the transistor is switched to “Fully-OFF”. So we can define the cut-off region when using a bipolar transistor as a switch as being, bother the junctions of NPN transistors are reverse biased, VB< 0.7v and Ic=0. Similarly, for PNP transistors, the emitter potential must be ...
The transistor operation is similar to that of a single-pole single-throw solid state switch, where when zero signals are applied at its base, then it remains OFF and in such a situation, it acts as an open switch with zero collector current flowing. When we apply a positive signal to ...
PNP-transistor works as a switch: The Emitter potential for aPNPtransistor needs to be positive with respect to the Base. The transistor then functions as a solid-state "single-pole single-throw"(SPST)switch. The transistor becomes "OFF," operating like an open switch when a zero signal is...
A TRANSISTOR AS A SWITCH Look atFigure 1. It shows a typical general-purpose (NPN) transistor/LED circuit. If you hook up +5 volts to Vcc in this circuit and pulse the input terminal (Vin) with +5V, 0V, +5V, etc., the LED will flash on and off accordingly. Of course, in orde...
Therefore, the entire Vcc voltage appears across the collector. But, because of the reverse bias of the collector-emitter region, the current cannot flow through the device. Hence, it behaves as an OFF switch. The circuit diagram of a transistor in the cut-off region is as shown in the ...