Brand new original 12V power tool speed switch,

The original brand power tools are better,

Using a 10.8V lithium battery,

Switch model EGD-1112B, 12A,

This Defeng switch is relatively new,

Many new electric screwdrivers are of similar styles,

Great value for DIY modification and repair,

The measured voltage range is 9-13V,

Charge indicator and lighting lamp.

The switch works well,

The power tube uses a patched American IR 100A30V tube,

The internal resistance of this tube is very small,

All the integral heat sinks don’t need to be too big,

Wiring with temperature detection line,

It can be replaced by a 10K resistor,

Switch push type stepless speed regulation,

Support forward and reverse switching,

The specific wiring is marked in the following figure.

The switch weighs about 33 grams.