Electronics > Beginners

Glue gun mod...

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nznative:

--- Quote from: Ysjoelfir on May 27, 2019, 06:05:23 am ---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.

--- End quote ---

Correct @Ysjoelfir!
It is a Ryobi indeed. If you could check it out and offer any ideas it would be greatly appreciated!!!



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garethw:
@nznative, do you have an oscilloscope? If so, some measurements from the Vout terminal would be very useful.


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nznative:
Not yet @garethw... will check at the workshop tomorrow and see if we have one there...
[emoji1417][emoji1417][emoji1417]


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Zero999:

--- Quote from: ogden on May 27, 2019, 05:46:43 am ---
--- 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.

--- End quote ---
I suspect that board is purely for battery protections/charging. I doubt that board does any temperature control or PWM. There doesn't appear to be a connection for a temperature sensor.

Start by searching for the part number on the IC.

nznative:
Thanks @Zero999 will look into it ASAP...


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