I wanted to put together a little tester so when I reflow LEDs I can check to make sure they work. I used a single 18650 battery holder and soldered leads to a working driver and then solder leads from the driver. On the end of those leads put a blob of solder.
I’m measuring 4V (battery voltage) and 0.65A with my multimeter when I put the pins on the solder blob leads coming from the driver.
When I put the solder blob ends on PCB that I know works, it won’t light up the LED. What do I need to do here?
If you are getting both Voltage and Amperage readings by simply connecting the ends of your multimeter to the + and - wires of your driver, then you are essentially sorting your driver once measuring the amperage.
If that’s the case, you might have already blown something in your driver.
The easiest way to see if an emitter is working is to put your multimeter in diode testing mode and simply connect the probes to the star’s contacts.
I’m pretty sure I have read that some drivers will blow if their not connected to a load.
You could also just connect a 9v alkaline battery up to the led. The alkaline wont flow enough current to blow it.
That’s what I have used for years. Get one of these and your in business.
Unno, I’d just take a 9V battery and 100Ω resistor and let that be my tester, unless you really wanna hit it with full current. If the LED glows, it works.
