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Re: H-bridge diodes

Original poster: Shaun Epp <scepp@xxxxxxx>

Those diodes you are referring to, I assume were the ones in series with the MOSFET, and then an anti parallel diode across it and the MOSFET. They are not needed. MOSFET's with slow body diodes do bennifit with a anti parallel diode across the source and drain though. Alot of the newer MOSFET's have fast body diodes built into them already.

Shaun Epp

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, February 02, 2006 6:08 PM
Subject: Re: Re[2]: H-bridge diodes

Original poster: Steve Ward <steve.ward@xxxxxxxxx>

I dont bother with them, they actually caused me more headaches and
didnt seem to do anything but fail from overheating.  I think its
pretty safe to leave them out.


On 2/2/06, Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: "Alexander Turkin" <alex_3@xxxxxxx>
> I mean the diodes, which don't allow the body diodes of MOSFET's to
> conduct currect.
> I see thet many coilers don't use them. Are they right?