When does a transistor act as a switch?
When does a transistor act as a switch? The transistor operates as a Single Pole Single Throw (SPST) solid state switch. When a zero input signal applied to the base of the transistor, it acts as an open switch. Can a PNP transistor be used as a switch? A motor always consumes the maximum current when stalled. Thus the load voltage is 12VDC and the maximum load current is 1.25 A Vload = 12V Iload (max) = 1.25A In general, we can use both PNP or NPN transistors as switches. However, PNP transistors can only control the same voltage as...