Electronics > Beginners
Glue gun mod...
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amyk:
I would try to reverse-engineer that circuit first; it doesn't look like PWM to me, more like a simple linear regulator with D1 (a zener?) setting the voltage.

garethw:

--- Quote from: Mechatrommer on May 26, 2019, 06:13:09 pm ---
--- Quote from: nznative on May 26, 2019, 10:51:40 am ---Here is a pic of the pcb though...

--- End quote ---
it looks like PWM generator.

--- End quote ---
I agree with Mechatrommer. The components don’t look large enough for linear regulation.
If it is PWM then it could be a case of replacing a capacitor to lower the temperature. Having said that I think nznative wants both low and high temps.



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ogden:

--- Quote from: amyk on May 27, 2019, 02:10:06 am ---I would try to reverse-engineer that circuit first; it doesn't look like PWM to me, more like a simple linear regulator with D1 (a zener?) setting the voltage.

--- End quote ---

No. It is PWM or just solid state relay. Heater regulation with linear regulator would be insanity.
Ysjoelfir:
Is that a ryobi glue gun? sure looks like one. If so, I have the same guns at home and could take a look inside when I'm back from work to help you figure out a solution.
nznative:

--- Quote from: garethw on May 27, 2019, 05:22:15 am ---
--- Quote from: Mechatrommer on May 26, 2019, 06:13:09 pm ---
--- Quote from: nznative on May 26, 2019, 10:51:40 am ---

--- End quote ---

If it is PWM then it could be a case of replacing a capacitor to lower the temperature. Having said that I think nznative wants both low and high temps.





--- End quote ---
Correct @garethw...A dual temp cordless gun is the objective here...!



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--- End quote ---
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