BOE and Stamps

Archiver

I just got a BOE with a Basic Stamp, and when I plugged it in for the
first time, the stamp got VERY hot. The chip that burned me was the
small chip in the top right hand corner with the big chip on the bottom.

I turned it off very quickly. [noparse]:)[/noparse] It was put in there correctly, with the
big chip toward the edge. Can somebody HELP?


Tad

Archiver

Tad-

tell us the number on the chip? LM3940CT? It's a voltage regulator that
supplies 5 V. to the stamp and dissipates excess voltage as heat. It can get
hot depending on your voltage supply and current draw.

In a message dated 05/09/2001 8:56:33 PM, tad@h... writes:

>I just got a BOE with a Basic Stamp, and when I plugged it in for the
>first time, the stamp got VERY hot. The chip that burned me was the
>small chip in the top right hand corner with the big chip on the bottom.
>



Larry Geib
ljgeib@a...

Archiver

It's not the one on the board, it the one on the stamp. Never mind, I sent I
back to Parallax for testing.

LJGeib@a... wrote:

> Tad-
>
> tell us the number on the chip? LM3940CT? It's a voltage regulator that
> supplies 5 V. to the stamp and dissipates excess voltage as heat. It can get
> hot depending on your voltage supply and current draw.
>
> In a message dated 05/09/2001 8:56:33 PM, tad@h... writes:
>
> >I just got a BOE with a Basic Stamp, and when I plugged it in for the
> >first time, the stamp got VERY hot. The chip that burned me was the
> >small chip in the top right hand corner with the big chip on the bottom.
> >
>
> Larry Geib
> ljgeib@a...
>
>
>
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