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4.97 out of 5
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  • 29/12/2020

    very good shipping again.keep it up!

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  • 08/01/2017

    in testing this unit, all the frequency ranges function. The higher 3 ranges have very little ringing and produce a good square wave. On the lowest range it produces more of a saw tooth then a square wave. So some filtering would be needed to run it in the lowest speed if your project needs a clean square wave. Will have to do some additional testing on the adjustments, but on initial test there is a few gaps in the ranges, but that may just be my testing.

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  • 22/03/2017

    Vraiment un petit circuit avec toutes les possibilités du NE555. Pas la peine de perdre du temps à en câbler un sur une plaquette proto ... De toute façon ça vous reviendra plus cher que ce petit module !

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  • 24/04/2017

    The product works very well and is exactly as advertises. Would have liked it if changing the duty cycle did not influence the frequency, but the datasheet did say that the two is dependent. Works over a wide range of frequencies as advertised. Delivery was in good time. Kind regards

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  • 16/02/2017

    Circuit imprimé de bonne qualité. On fait dans le miniature avec un bon fonctionnement du NE555

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  • 27/08/2019

    ame as above nice bit of kit to generate a pulse wave fed into the low tension of an old car ht coil and ya have a cheap electric fence??

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  • 08/08/2017

    This is a good quality product - exactly as advertised. It has a very small footprint and should fit many applications.

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  • 30/05/2017

    Great device, works as advertised. Simple and clean layout.

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  • 02/01/2020

    Very pleased

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  • 21/10/2019

    all good

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