>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
>Sent: 18 August 2005 11:17
>To: Microcontroller discussion list - Public.
>Subject: Re: [EE] Re: Design Challenge - A better H Bridge MK2
>
>
>> Nobody has mentioned the brake circuit.
>
>Answering my own post. A normally open reed or similar relay would 
>work fine as a brake. Open circuit when running and shorts the motor 
>(via as large or as small a resistor as required) when input drive is 
>removed.


Could you use a couple of back to back MOSFETs?  This would at least reduce the drive current requirements, but not sure how cheap reed relays are!

Regards

Mike

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