I am new to boost converters and high power led’s but I have a 1meter led strip containing 240 2835-led’s and the strip is rated for 24v. The assumed necessary watts to power this strip fully is 36watts.
My goal was to see if I could power it using a single sony NPF970 battery which outputs 8v and a max of 5amps (40watts).
I purchased this 250w boost converter https://www.amazon.com/dp/B076J8734G/ref=cm_sw_r_cp_api_i_ImLBEbDZRCQZQ
I set it up and connected my multimeter and was able to output up to 30v and used the pot on the converter to trim down to 25v. I started with the current pot turned all the way down. I connected my strip and it did indeed light but the output voltage dropped to 14v. Increasing the voltage pot did nothing but increasing the current pot did allow the voltage to rise. I could crank the current pot up until it was putting out 1.6 amps and the voltage was at 22v. Any higher and the battery cut out (I was over the batteries 5a max current draw).
I’m sure this is obvious to you but I can’t find a clear explanation as to why I couldn’t output 24v with lower current. Is the LED strip determining a minimum current draw that is high enough that they themselves are limiting potential output voltage given a fixed input wattage?
Any clarification much appreciated!
My goal was to see if I could power it using a single sony NPF970 battery which outputs 8v and a max of 5amps (40watts).
I purchased this 250w boost converter https://www.amazon.com/dp/B076J8734G/ref=cm_sw_r_cp_api_i_ImLBEbDZRCQZQ
I set it up and connected my multimeter and was able to output up to 30v and used the pot on the converter to trim down to 25v. I started with the current pot turned all the way down. I connected my strip and it did indeed light but the output voltage dropped to 14v. Increasing the voltage pot did nothing but increasing the current pot did allow the voltage to rise. I could crank the current pot up until it was putting out 1.6 amps and the voltage was at 22v. Any higher and the battery cut out (I was over the batteries 5a max current draw).
I’m sure this is obvious to you but I can’t find a clear explanation as to why I couldn’t output 24v with lower current. Is the LED strip determining a minimum current draw that is high enough that they themselves are limiting potential output voltage given a fixed input wattage?
Any clarification much appreciated!