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    2019-02-05 11:48:09

    Ótimo produto, qualidade e bom preço..!!!

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    nice must buy

    2018-04-05 04:19:47

    good quality step up usb convertor for diy projects must buy. came with nice packaging.

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    The product is very good, I am satisfied with the price and the quality is adequate.

    2016-01-05 10:55:01

    The product is very good, I am satisfied with the price and the quality is adequate.

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    2019-05-31 09:35:47

    Got the three pieces, to be tested!

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    Not tested but looks good

    2019-01-12 04:59:41

    Soldering is good

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    2020-01-29 15:33:16

    ok

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    2020-01-01 16:05:32

    quality is good, not checked the function yet

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    2019-11-28 16:55:39

    bien reçu . impeccable fonctionne comme décrit

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    Great boost module for 5 to 12v output

    2015-09-09 14:27:14

    Works fine at standard 5v. It is also a fine module for output up to 12v (I personnaly changed R2 - the closest to IN- - to 8200ohm for that). It is also possible to control the booster using pin 4 of the FP6291 chip : just cut the small trace between pin 4 and 5 then wire pin 4 to your controller. Be aware that it does not on/off the output voltage : when the booster is off, the output voltage is the same as the input voltage, minus the drop from the diode. Bottom line : it is a very useable module

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    Good product and works as described.

    2016-12-27 08:46:24

    This is a little module that can be used to construct your own power banks, or anything else working with 5v. Very compact and good price. You must be aware that some devices require surges of power from the power supply, so if you are thinking about using it to avail old batteries, think that your old batteries may not be able do the job. When building your own power banks shoud use only batteries in good healthy condition!

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