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Topic: Mosfet H-bridge (Read 1 time) previous topic - next topic


Jul 07, 2013, 09:23 pm Last Edit: Jul 07, 2013, 09:28 pm by yes955 Reason: 1
Hey. I am new to electronics and I have a problem that I hope someone won can help me with.
I am trying to build an H-bridge but for some reason the first power mosfets (IRFZ44N) has a very big voltage drop. I only have 5 volts and it uses 3 volts.

On the picture it would be number 1 and 2 that are the problem.

i have 6 volts


Well, looking at a datasheet
we can see that this is an N-channel MOSFET.
For an H-bridge, one typically uses P-channel  MOSFETs in the 1 & 2 position, for example
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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"I am new to electronics" + "I am trying to build an H-bridge" = go to ebay and buy one of appropriate size. If you are considering rolling your own, read the below first.

Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

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