[DSP-10] Construction hints

[Bob Larkin]

Hi again,

It dawned on me that this might relate to the IAL lead problem. When you go
to an 8 Volt regulator, you are getting very close to the minimum input for
the 7805 regulator on the EZKIT. I measure about 0.8 V across D3 on an
EZKIT. This puts 8.2 V at the regulator input using the 9V external
regulator, or 7.2 with the 8V type.  Might be worth playing with to see if
there is a difference (try shorting out D3?).

73, Bob 

At 05:28 AM 3/21/02 EST, you wrote:
>To whom it may concern....
>
>Hello ALL....and mainly to builders of the EZ Kit box...
>
>My box is ready and the EZ Kit is in there now and in the test-stage.
>I like to mention some thing how I dided...
>
>1. I used a 8 Volt regulator and not the supplyed 9 Volt one. This reduces 
>the heat by about 25 % which is now carried
>    to the inside-wall and outside-wall of the box.
>
>2. The "heat-sink" from the 5 Volt onboard regulator is a small silver brass 
>strip and is good to get the heat away so as
>     the regulator never gets hoter then "handwarm".
>
>3. RS 232 connections from J3 inside the EZ Kit box are not soldered to the 
>bottom of the pc board. I took a spare 9 pin
>    male connector a part and used only the pins. Pluged them in J3 and fine 
>wires running in a piece of coax-shield
>    to the feed-through capacitors to the front of the box.
>
>All details can be seen on the website   www.walter-schroeer.de/id21.htm
>
>I hope this will help somebody a bit......best 73 de Hermann DC9UP
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