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Offline bayou

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  • Germany
small power module
« on: February 08, 2019, 04:48:10 PM »
Hi together.

here i'll introduce two power module which i've found on ALI.
the first one is adjustable and has also fixed voltage output.
https://www.aliexpress.com/item/1PCS-Mini-DC-DC-12-24V-To-5V-3A-Step-Down-Power-Supply-Module-Voltage-Buck/32921883888.html?spm=a2g0s.9042311.0.0.27424c4d2R3chO

the second one.
also very small. "only" adjustable.
https://www.aliexpress.com/item/1pcs-Mini360-DC-DC-Buck-Converter-Step-Down-Module-4-75V-23V-to-1V-17V-17x11x3/32786777084.html?spm=a2g0s.9042311.0.0.27424c4d2R3chO

they are tested in some WPL trucks for the lights. there's no need from resistors

regards
Ulrich

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Offline LukeZ

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  • Kansas, USA
Re: small power module
« Reply #1 on: February 08, 2019, 05:41:45 PM »
Is the idea that you would use these instead of current limiting resistors for LED lights? I guess they are certainly cheap enough.

What other purpose for them do you have in mind?
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Offline bayou

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  • Germany
Re: small power module
« Reply #2 on: February 11, 2019, 02:29:48 PM »
you can use it for a FPV system. in first line i've tought to such things.
I've them also in WPL-trucks with a various number of LED's. the resistor don't have to be changed.

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Offline LukeZ

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  • Kansas, USA
Re: small power module
« Reply #3 on: February 11, 2019, 02:52:09 PM »
Good point about the FPV, some do require special voltages.

If you have an FPV camera/transmitter that works on 5 volts, I know one user who powered his via the Aux output and so was able to turn on/off the camera from his transmitter that way.
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