Hello everyone,
I am looking for a way to connect the arduino output pins to a 25V 700mA power supply for high power leds. I was using the H-Bridge from the starter kit, but that one blew so I am looking for a more capable one. It is very important that it has a short latency.
Thank you very much!
I think you mean you want to switch a high power circuit. Easiest is switching on the low-side - for 0.7A
a MOSFET or Darlington would be suitable.
Links please to the supply and the leds...
Hey,
Thanks for your quick reply! Those are the used components, unfortunately the website is in german.
Driver: MeanWell LPHC-18-700 LED
(https://www.conrad.de/de/mean-well-lphc-18-700-led-treiber-led-netzteil-18-w-6-25-vdc-700-ma-led-stromversorgung-konstantstrom-514598.html)
LED: HighPower-LED Blau 31 lm 130 ° 2.3 V 700 mA LSC-B
(%product-title% kaufen)
blorgh:
It is very important that it has a short latency.
Switching the inputs or outputs of an AC LED driver is unlikely to give you the result you're expecting. Before getting too far I'd suggest running a few tests with a mechanical switch to see how much lag time there is between closing the switch and the LEDs turning on.
Using the H-Bridge which was supplied in the Arduino Starter Pack I had quite satisfactory results in terms of speed, however it burned during a longer power cycle... .
Since I need a new one anyways I also wanted to upgrade to a faster one.