you essentially have a wall wart
Other features include a guaranteed ± 4% tolerance on out-put voltage under specified input voltage and output loadconditions...
I've blown several high power (>1amp cree) LED's with these, when they get hot (or becomes shorted) the regulated voltage increases, so after running it for an hour, the temp slowly creeped up, with heat came a slow rising voltage until death....
what i do and do not do with my LED is my own buisness...
secondly... You're wrong what killed my LED's is not current at all but heat.... these power supplies got hot to drive the led which increases the light, truth is even at 3 amps which i can assure you these can not deliver at 4.2v ... even at 12v and even if it could... it's well within max current specifications... but no all i required was a lot bigger heat sink... heat and heat alone caused the death as the regulator crept up in voltage so did the current death from heat NOT anything else
I've blown several high power (>1amp cree) LED's with these, when they get hot (or becomes shorted) the regulated voltage increases
20 volt 2 amp drop that's 40 watts
There's onboard thermal regulation which prevents anything excess current being delivered to the LED.
I can show a stable voltage on video to the device you're powering, but decrease the resistance the voltage increases.
Quote20 volt 2 amp drop that's 40 wattsThis is a switching mode regulator.QuoteThere's onboard thermal regulation which prevents anything excess current being delivered to the LED.That doesn't mean the less-than-excessive voltage from the regulator wouldn't cause excessive current / power dissipation on the led.No, the board does not regulate current output at all: they call it a voltage regulator for a reason.
(3) The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulatedoutput voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average powerdissipation of the IC by lowering the minimum duty cycle from 5% down to approximately 2%.