testing a led

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Lights-Out
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testing a led

Hey guys I have a sbt-70 and would like to test to see if it’s a working led so how can I test that high power led ? (With out a driver)

CRX
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I use one of these with a half charged old battery for quickly testing <4v LEDs

Or a DMM set to diode mode.

Lights-Out
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I did the diode mode but nothing I don’t think my DMM is large enough to power this big led

Lightbringer
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For “regular” star-mounted LEDs (ain’t familiar with the SBT70), I’ve taken one of those 3×AAA tubes/adapters and with clip-leads just bridge that across the LED.

Same internal resistance that limits current to 5/7/9/13 LEDs in one of those silly flashlights provides decent yet limited current to the test-LED.

And clip-leads often have hair-thin wires inside, further limiting current to keep it the LED from instantly going “pouf!”, too.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0