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[DPRG] Cheap high power H-bridge

Subject: [DPRG] Cheap high power H-bridge
From: D. Daniel McGlothin ddm_dprg at yahoo.com
Date: Tue Nov 27 07:36:59 CST 2001

> Interesting idea. Having been in the throes of designing a FET based
> h-bridge I thought I'd check it out.

Are you aware of the OSMC http://groups.yahoo.com/group/osmc, an Open Source
Motor Controller.

Quoting from their FAQ (in
http://groups.yahoo.com/group/osmc/files/support_docs/):

2.4) How many Amps can the OSMC withstand?

    While the design has not been battle tested yet, it is expected to have
an
    upper limit of less than 100A. To date, extensive testing/usage has been
    in the 60 Amp range.

2.5) What is the maximum rated voltage?

    You can go up to a maximum battery voltage of 50V. This is a function of
the
    (typical) maximum voltage the FETs and FET driver chip used.

    Note: Batteries have a significantly higher voltage "fresh off the
charger"
    so you won't be able to use 48V worth of batteries with the OSMC.  It is
    recommended that you limit your "rated" battery voltage to 36V or so.


Note that two different entities are providing kits/assemblies, as mentioned
near the bottom of the project doc:
http://groups.yahoo.com/group/osmc/files/support_docs/OSMC_project_documenta
tion_V4_0.doc .

Curiously waiting arrival of my kit...
Regards,
Daniel


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