Soldering iron station circut

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For a relative simple soldering iron that has an LCD display, temperature feed back and temp preset then look over at PCB Heaven
Pretty easy circuit. I myself am build one but not comfortable with assy so going to try coming up with a code in Swordfish..
 


Hi there,

Thanks for the heads up.
My iron is a simple one with an element and that's it so i assume it can run on DC, although i havent tested to see if it can yet.
 
MrAl said:
Hi there,

Thanks for the heads up.
My iron is a simple one with an element and that's it so i assume it can run on DC, although i havent tested to see if it can yet.
Click to expand...

No problem buddy. My Magnum station is around 15 Years old now. On every working day from 8 to 5. Only replaced the element once (around three Months ago).

Weller gave me endless problems. And they are supposed to be the best....NAH.

Cheers.
 
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I run into a small porblem with Reloadron's suggested circuit and here is a dumb question : so there is a 250k pot in parallel with a 180k resistor. Since there are no such a things as 250k pots (except for some expensive audio guitar pots), can I just use a 100k pot without parallel resistor.? According to my calculations if 250k potentiometers resistance is set to 0Ohm, their both (resistor parallel with pot) resistance should be roughly 0Ohm. But when pots resistance is full 250kOhm, their both resistance should be 1 / ((1 / 180) + (1 / 250)) = 104.651163kOhm . Although alone 100k pot and 180k + 250k pot min and max values are roughly the same, 100kOhm potentiometer would adjust resistance linearly not like 180k resistor parallel with 250k potentiometer. Does that affect something? I hope someone understood this none sense.
 
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Hello there,


The incremental change in resistance of a 250k pot in parallel with a 180k resistor is a little different than a single 105k pot, but the 105k pot (which you will approximate by using a 100k pot) will still work. Because the incremental resistance is a little different, turning the pot may have a slightly different 'feel' to it as to how it affects the set point. Electrically it will still work though so you can use a 100k pot if you like. You'll still get the same range of resistances too.
 
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