How to place a trimpot? (thor)

Started by Auke Haarsma, January 27, 2007, 11:00:36 AM

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Auke Haarsma

Hi, I'm putting together a Thor from ROG (http://www.runoffgroove.com/thor.html) and the schematic requires two trimpots. This is the first time I use trimpots...so how do I place them? I've got a 5k6 trimot with one 'side' with two lugs and another one with 1 lug. Could some1 explain me how this one should fit on the pcb? Thanks!

MartyMart

The "single" lug is your middle lug or "wiper" - it's like a triangle 
      2
   3 /_\ 1

Connect one outer lug to 9v or VB - whatever is on the schem, join the other two
lugs via a small jumper piece of lead , so "middle " and the other "outer" lug and connect
this point to the Jfet Drain.
When you adjust the pot , the voltage will vary between 9v max and 0v min  :D

MM.
"Success is the ability to go from one failure to another with no loss of enthusiasm"
My Website www.martinlister.com

Auke Haarsma

I knew I would get a fast and good answer here! Thanks a lot. *heats the soldering iron again* ;)

gaussmarkov

here's another explanation:  you can see how i put them into this layout of the thor.

all the best, gm  :icon_biggrin: