Re: 2 Fried G210's in a single day :-(

umm.....

sound like I am going to read a lot more before
I connect power.

It sounds like we should have a initial set-up and
testing paper to help us avoid these problems.

Is there such a data sheet ?

Granted 99% of errors come from b]dumb mistakes
but... seems like 99% of us are learning
as we go along so we do not know the questions
to ask until we make those dumb mistakes.

who said you need to learn the mistakes of
others as you won't live long enough to
make them all yourself ?

Dave

--- In CAD_CAM_EDM_DRO@y..., "RC" <asdf@c...> wrote:
> Can you tell us more about the zenor diode, how it is connected, a
good
> souce for them, and the specs?
>
> Thanks,
> RC
> ----- Original Message -----
> From: Nicolas Benezan <bene@s...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Monday, May 06, 2002 2:42 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Re: 2 Fried G210's in a single day :-
(
>
>
> > Peter wrote:
> > > Sean, you were very gracious (in defeat) to share your
experience and
> > > hopefully save others from the same misadventure.
> >
> > One more hint I have to add:
> >
> > NEVER try to run a Gecko from a regulated power supply. A friend
of mine
> > did and fried his Gecko immediately at the first power up. I
think, what
> > happened was that the motor began to oscillate due to the wrong
> > gain/damp adjustment. A regulated power supply can source enough
current
> > for the gecko while holding the voltage exactly constant. But
only few
> > of them are designed to _sink_ current, when the motor is acting
as
> > generator which it does repeatedly when it is oscillating. So the
> > voltage rises in an uncontrolled way overloading the power
transistors
> > of the Gecko. We replaced the FETS but with no luck. Seems that
the 5V
> > regulator was fried, too.
> >
> > So always add al _large_ capacitor to the DC supply. I even add a
> > seperate "energy absorber" (large Zener diode or
> > Zener-transistor-resistor combination) to my setups because I
don't
> > trust the capacitor alone.
> >
> > Ciao
> > Bene
> >
> > --
> > !!! Achtung, neue Adresse !!!
> > Benezan Electronics, Maria-Merian-Str. 20a, 70736 Fellbach,
Germany
> > Kundenspezifische Elektronikentwicklung, Sondermaschinenbau
> >
> >
> >
> > Addresses:
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> >
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> >
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> >
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