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  • 29/04/2021

    Nice small oscillator. 4 frquency ranges. Hard to control dutycycle in th 2 higest ranges. Especially the higest, almost impossible. Wave form i higest range is far from sqare. Very usefull in lower ranges.

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  • BDRVIP5
    HU
    29/07/2020

    Good use product. Thank you!

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  • 09/09/2021

    for my purpose excellent THANK YOU

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  • 05/03/2018

    Sympa. Réglage de la fréquence (résistance de gauche) et du "duty cycle" (résistance de droite du côté du NE555). Le cavalier permet la sélection de la plage de fréquence. La LED s'allume en position LOW de l'output et correspond donc à l'inverse du duty cycle. Si le cavalier est dans une autre position que basse (L) alors la LED rest allumée tout le temps et sans oscilloscope on ne voit pas ce qu'on règle.

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  • 16/12/2017

    Was hoping to adjust frequency with one potentionmeter & the duty cycle with the other potentiometer. Well it really doen't work that way. You have to find some magic combination for both potentiometers to get to the desired frequency & duty cycle. Also there's quite some gaps in frequency bands, it was a hassle to find my desired frequency (38KHz), almost no duty cycle control possible on that frequency

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  • 31/01/2018

    доставка и качество отлично. я что ожидал то и получил правда была оплачена доставка а отправили почтой

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  • 25/07/2019

    Everything has arrived as I expected. The delivery was very fast. Everything was very good - as described.

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  • 12/07/2019

    Easy to use, compact and useful. No need any external controller, just power supply. Can be used to control your H-bridges and drive your DC motors.

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  • 21/05/2019

    Tested one out of 3. A stepper motor (with driver) worked ok with the pulses. Is working well but need to observe the output on a scope.

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  • 25/07/2017

    The generator is tested with propower of an oscillograph. The form of impulses very good. The maximum frequency to 2000 kHz

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