-4
votes
1answer
69 views

The mosfet driver function in high and low side [closed]

the mosfet gate need high voltage in order to turn on the mosfet as well? What is the different in High and Low side of MOSFET? Why there will having a high and low side ? Is there any affect ?
2
votes
1answer
258 views

What is the function of a MOSFET driver in an H-bridge?

What would happen if I didn't use MOSFET gate a driver, and simply connected the MOSFET gates directly to the logic outputs of a microcontroller? I am quite confused about the need of a MOSFET driver. ...
20
votes
5answers
823 views

Why would one drive LEDs with a common emitter?

I've seen tutorials aimed at beginners suggest the way to drive an LED from something without enough current drive is this: (option A) but why not this: (option B) Option B seems to have some ...
2
votes
1answer
1k views

how choose transistor for driver circuit of stepper motor?

I need to drive a 1A stepper motor coil from a digital output that can source only 5mA. That would require Hfe of 1A / 5mA = 200, but I can't find a transistor with that much gain. Is there any ...
3
votes
1answer
2k views

Totem Pole Output Driver

I was wondering if someone could explain what a totem-pole output driver is? I have seen the term mentioned in connection to the inner circuitry of an AND gate (consisting of transistors) and in ...
3
votes
1answer
4k views

Motor driver using only a 2N2222 transistor?

Is it possible to build a motor driver using only a 2N2222 transistor? If yes, then how?