Homemade programmer!!!

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May 3, 2001 | 06:21 AM
  #1  
Has any of you build that homemade programmer?

Would it work with 89 305 TPI computer?

Thanks.
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May 3, 2001 | 01:48 PM
  #2  
here you go bud I am in the process of making one of these I have tryed to email Dextron but got no reply from him (he seamed to know alot about it) but i found this post really informative . good luck man

https://www.thirdgen.org/messgboard/...ML/000580.html


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B4Cyaa

1991 RS B4C
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May 3, 2001 | 04:01 PM
  #3  
Thanks for the reply 91B4C jacob.

That is the one I was looking at earlier. Is there any other equipment that i need to program chips or this homemade programmer should do it all?

PS. I have a Pentium 486 at home along with some computer knowledge.

Thanks.
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May 3, 2001 | 05:59 PM
  #4  
I just finished building the one from www.zws.com it wasn't too hard but I haven't tried it yet.

to those who have built their own programmer are the heatsinks on the 7805 voltage regulators supposed to get extremely hot to the touch?
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May 3, 2001 | 09:46 PM
  #5  

Quote:
<font face="Verdana, Arial" size="2">Originally posted by John Boy:
I just finished building the one from www.zws.com it wasn't too hard but I haven't tried it yet.
to those who have built their own programmer are the heatsinks on the 7805 voltage regulators supposed to get extremely hot to the touch?
</font>
No, but this is from other projects.
You should be able to hang onto it.
heat sinks need mass and area
Does it use a 10 mfd cap on the out?
I generally put a .1 cap on both sides of one, and then a 10 on the circuit side.


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May 3, 2001 | 11:44 PM
  #6  
well at that zws site it list a cap on the parts list but it wasn't in the schematic ...would that help with it over heating? just putting on on the 5v out?
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May 4, 2001 | 02:36 AM
  #7  
Those chips are designed to run hot. I'd say it's normal. Personally I'd go with a 100 qF cap, 10 seems too small.

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