110V 50Hz Mini Heat Gun to 220V Compliant

Thread Starter

Aleksandr Gonzales

Joined Jan 15, 2016
27
Good day!

I received a 110V 50Hz 300W Mini Heat Gun. It was my fault that I didn't see that it is rated at 110V. Our standard here is 220V. The heat generated by the gun is uncontrollable, maybe because I have plugged it in a 220V outlet. So I opened the heat gun an see that it only has few components.

1. Switch
2. Motor
3. 2W10 Bridge Rectifier
4. Heat Element

I was wondering if I can make it compliant with 220V getting parts from our hair dryer with a source selector (110V or 230V). I opened it up and there are many components:

1. Carli MPX40 240V Capacitor with a 1M Ohm Resistor
2. 6A4 MBE Diode
3. Heating Element (Thicker)
4. Diodes (1N5395)
5. Motor with Capacitors

Or can I swap the heating element to make it thicker?
 
Last edited:

KeithWalker

Joined Jul 10, 2017
1,789
Replace the bridge rectifier with a single 600V 5A rectifier diode. The motor and heating element will then only receive 110V RMS.
 

Ian0

Joined Aug 7, 2020
2,289
Replace the bridge rectifier with a single 600V 5A rectifier diode. The motor and heating element will then only receive 110V RMS.
Unfortunately not.
It will receive 155V rms (220V/√2)
Double the voltage and the load will dissipate four times the power, add a half-wave rectifier and it will only do so for half the time.
Power will be double what it should be.
 

KeithWalker

Joined Jul 10, 2017
1,789
Unfortunately not.
It will receive 155V rms (220V/√2)
Double the voltage and the load will dissipate four times the power, add a half-wave rectifier and it will only do so for half the time.
Power will be double what it should be.
Yes, I stand corrected. It must have been an age related mental hiccough!
 
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