Hi experts.
Being new to electronics, I got this unanswered question about adjustable buck converters (dc step down converter modules) - see Buck Step Down LM2596 Power Converter Module DC 4 0 40 to 1 3 37V LED Voltmeter | eBay.
They are usually built around a LM2596 IC, which uses 2 resistors to adjust the output voltage.
On my module, the first resistor is fixed and the second one is a multi-turn potentiometer.
The module should be able to handle 37V / 2A, but the potentiometer is only rated 1/2 watt. So why is it that 1/2 watt is enough for this application?
I want to replace the multi turn potentiometer with a rotary potentiometer. Does anyone have a clue how much resistance the potentiometer should provide? I guess the higher the better?
Kind regards,
Klaus
