Our supplier is now getting us a new power supply.
I hope that will cure the problem of our windowed
parts getting their protect bits set!  Funny thing
is that it does not seem to affect our OTP parts.
Oh well, I won't refuse the new power supply!

-Walt...

-----Original Message-----
From: Jim Robertson [mailto:newfound@PIPELINE.COM.AU]
Sent: Wednesday, February 16, 2000 5:07 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: PICStart Plus Problem (Power supply?)


At 02:06 PM 2/15/00 -0500, you wrote:

I can confirm that the picstart plus will fail if the voltage input is
to high. Aim to keep the voltage input around 9VDC.

Jim



>I am using a PICStart Plus with the original power supply that came
with
>the machine when I purchased it two years ago.  I have had progressive
>difficulties with the programmer in the past two days.  The problems
>usually are characterized by a message from MPLAB instructing me to
>check the power and serial connections and/or reset the programmer.
The
>PICStart Plus is rated for a 9VDC input; also the output rating of the
>power supply I am using.  I have measured  the power supply output and
>found close to 12VDC even when plugged into the programmer.  I say the
>problem was progressive because it was initially manifest as the
>occasional inability of MPLAB to talk to the programmer.  This became
>more frequent and finally resulted in failure to program a 16C84  and
>then the complete inability to talk to the PICStart Plus from MPLAB.
>
>I know it isn't unusual for a power supply to show a voltage different
>from the nameplate rating, but 12VDC in lieu of 9VDC seems excessive.
>Does anybody have any experience with how tolerant of variations of
>input voltage the PICStart Plus programmer might be?
>
>Thank you for your consideration,
>
>Andrew McDermott
>
Regards,

Jim Robertson
NEWFOUND ELECTRONICS
________________________________________
Email: newfound@pipeline.com.au
http://www.new-elect.com
MPLAB compatible PIC programmers.
________________________________________