Transistor Based Relay Driver Circuit. Circuit design of 12v relay driver using transistor as a switchabout this video a relay is an electromagnetic switch operated by a relatively small electric. Figure 3 is the driver relay circuit by use input voltage to feed to the relay coil but has some voltage junction base and emitter lead of transistor.
A microcontroller typically will output a high or low logic level 3 3 or 5v for a high and 0 volts for a low and is used to switch on a driver transistor or integrated circuit. By adding a 470 uf electrolytic capacitor at the base of the relay driver transistor a short lag can be induced so that the transistor switches on only if the input signal is persisting. For example input from the pulse output digital pulse of 12 volts to drive to the transistor.
For example input from the pulse output digital pulse of 12 volts to drive to the transistor.
This video npn transistor based 12v dc relay control drive simple make it this type transistor is a semiconductor device used to switch electronic signals a. A microcontroller typically will output a high or low logic level 3 3 or 5v for a high and 0 volts for a low and is used to switch on a driver transistor or integrated circuit. An electronic circuit will normally need a relay driver using a transistor circuit stage in order to converter it s low power dc switching output into a high power mains ac switching output. The relay is connected between the positive rail and the collector of the transistor.
