DC-DC 3V-35V σε 4V-40V Ρυθμιζόμενη μονάδα ισχύος Step Up 3V 5V 12V σε 19V 24V 30V 36V Boost Converter

The ordered items looked good. After connection and adjustment all seemed to function correctly and the voltage setting was very stable. Unfortunately the item was connected to an led work light operating on 28 volts. All was kay but suddenly the light went out and the boost converter was extreme hot. Research indicates that the main transistor had a bolt attachment, according to specifications, this extension had bee cut off and the result was a very hot functioning voltage booster. The unit needs a heat sink attached to allow the voltage booster to function as designed. Could these units be modified to fit a heat sink to the board or can you supply an upgraded transistor.

haven't tried it yet, smaller than I imagined, not a problem though

Good but a bit small

Good but a bit small