I have another dumb question: Who makes the L298 and how much does it cost?

> -----Original Message-----
> From: Christoph Klein [SMTP:hyla@MAYN.DE]
> Sent: Monday, October 18, 1999 7:39 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      (Semi-)[OT]:h-bridge
>
> Hi!
>
> I'd like to control 2 class-600 motors in a track vehicle that are
> driven at 6V. To enable a pic to do that I've built an h-bridge
> using an L298, keeping close to a project by the DPRG:
>  http://www.dprg.org/hbridge.html
> When I connect the motors to the battery directly they purr away
> happily but connecting just ONE motor to the hbridge thing it will
> run very slowly and the torque is all gone. The L298 on the other
> hand doesn't get just warm, it'll sure heat up my cold winter
> nights AND I can boil my eggs on it too.
>
> All I changed was adding a +5v power supply with an L7805 which is
> fed by the battery too (for the "logic supply voltage" of the L298
> and the PIC that'll hopefully control all this). And I'm driving the
> whole stuff with 6V instead of 12V as the DPRGsters do.
> The current sensing inputs are connected to gnd directly. is THAT
> a problem?
>
> Any ideas? I'm nearly back to doing it with relays again ;)
> Hey, that wouldn't be all THAT bad ... ;)
>
> Christoph
>
> p.s.: when is Tjaart expected back? we've all been real good,
> honest ;)