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  • 04/05/2021

    I received the powers supply packed in good condition electrostatic pouches ahead of schedule I thank Banggood for the good service

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  • 25/07/2022

    fast delivery product good as per order

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  • 27/05/2022

    I am using these as energy-saving voltage reducers. There are two kinds of noise at the output: HF ringing from digital switching, and voltage ripple. I get rid of the ringing noise using a 8mm diameter ferrite ring with 3 turns of wire both plus and neg output wires. I get rid of voltage ripple with 78XX or LM317 linear regulators. The modules are rated 50 mV ripple, but my noise is much less than that - too low to measure on my O'scope. Basically I have a 26V 1Amp supply from a transformer, and from that I want to provide +Variable voltage, +12 Volts and +8 Volts at as much current as can supply, and for these supplies to be short-circuit protected. To do so I use 3 modules, 3 ferrite rings and 3 linear regulators. Success !!

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  • 29/03/2022

    Excellent for adjusting the current. Use to compensate for dry batteries

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  • 05/04/2021

    Okay, all delivered in order and functioning. Quick delivery.

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  • 16/03/2021

    Very good quality and useful for many applications

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  • 15/01/2021

    The inductor core is not correctly sized: it becomes super as soon as current goes above 1.5A Placing another inductor is recommended Otherwise work OK

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  • 14/10/2020

    Everything OK.

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