!#@ capacitor mistake of not.
i have a boe board and i was playing around with the 3300 uf cap and a nine volt battery wen i went to but the cap back on the boe board conected to Vdd and Vss i forgot to discharge it and now i can write to it.· it is detected but says check power supply.
Comments
Many regulators are easily damaged by applying voltage to their output
terminal with no input voltage. This is what you may have done with the
charged cap. If so, you probably just have to change the regulator.
Ray McArthur
Original Message
From: Todd W <toad1611@y...>
To: <basicstamps@egroups.com>
Sent: Saturday, August 19, 2000 8:03 PM
Subject: [noparse][[/noparse]basicstamps] !#@ capacitor mistake of not.
i have a boe board and i was playing around with the 3300 uf cap and a nine
volt battery wen i went to but the cap back on the boe board conected to Vdd
and Vss i forgot to discharge it and now i can write to it. it is detected
but says check power supply.
regulator...Anyway, there is a trick to avoid this problem : put a diode
between input and output of the regulator (anode to the output, cathode to
the input, FOR A POSITIVE VOLTAGE REGULATOR).
If the output voltage becomes higher than the input, the current will flow
thru the diode.
Best regards,
Philippe Derenne
Original Message
From: rjmca <rjmca@w...>
To: <basicstamps@egroups.com>
Sent: Sunday, August 20, 2000 3:15 AM
Subject: Re: [noparse][[/noparse]basicstamps] !#@ capacitor mistake of not.
> Todd:
> Many regulators are easily damaged by applying voltage to their output
> terminal with no input voltage. This is what you may have done with the
> charged cap. If so, you probably just have to change the regulator.
>
> Ray McArthur
>
>
Original Message
> From: Todd W <toad1611@y...>
> To: <basicstamps@egroups.com>
> Sent: Saturday, August 19, 2000 8:03 PM
> Subject: [noparse][[/noparse]basicstamps] !#@ capacitor mistake of not.
>
>
> i have a boe board and i was playing around with the 3300 uf cap and a
nine
> volt battery wen i went to but the cap back on the boe board conected to
Vdd
> and Vss i forgot to discharge it and now i can write to it. it is
detected
> but says check power supply.
>
>
>
>
>
>
while checking everything out and there is not +5v on pin 2 of the pic16c57
is my bs2 garbage now or what?
>
> > i have a boe board and i was playing around with the 3300 uf cap and a
> nine
> > volt battery wen i went to but the cap back on the boe board conected to
> Vdd
> > and Vss i forgot to discharge it and now i can write to it. it is
> detected
> > but says check power supply.
> >
> >
> >
> >
> >
> >
>
>
>
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com