Everybody has seen these low-cost LED testers discovered everywhere in the internet at low costs. However how correct are they? They’re not able to testing RGB LEDs both, and definitely can’t measure the ahead voltage drop. Nicely, take a look at this Multifunction LED Tester equipment from Tindie vendor LEDsales. It is extremely well-designed and completely full of options!
It will possibly check LEDs at a variety of currents from 1 as much as 40mA, utilizing steel movie resistors for good long-term stability. It can also check each widespread anode and customary cathode RGB LEDs, selectable with a flick of a change. As an added bonus, it may well even check Superflux LEDs (the 4-pin LEDs usually often called Piranhas).
The voltmeter on the entrance will present the battery voltage when no LEDs are related, however when testing an LED it’ll present the ahead voltage drop (Vf) of the LED! This can be a very helpful characteristic and will help you pick barely broken or mis-matched LEDs. The illuminated button within the centre of the panel is used for temporary testing, or you’ll be able to select to flip one of many three switches to continuously energy one of many check banks.
This isn’t a precision tester, however as you’ll be able to see within the included chart the measured values are inside a reasonably good tolerance. Solely the pink LEDs are usually a bit on the excessive facet. However for each day measurements and binning LEDs, it’s a wonderful device! The included documentation is extraordinarily well-written and straightforward to learn, and it’s all through-hole soldering with giant pads so even a newbie ought to have the ability to assemble the equipment. For those who work with LEDs usually, choose one up and test your LEDs!