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  • 05/07/2015

    Voltage of 400kV would allow to have a spark almost half a meter long at standard atmospheric pressure. Here we have 10 to 20cm what means 10 to 20kV and no more. Basically, it works but the description is missleading. Unfortunately, It seems the voltage here is like the resolution of chinese cameras or power of laser leds ... in reality it is much lower than in the description.

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  • 01/03/2016

    The kind of spark with bang and flash looks like the effects wich are seen when professional tasers are used. The chargetime of the HV capacitor (there must be one inside) influence the frequency of sparking and als the amount of joules one discharge delivers. When used for physics, keep the inputcurrent low and the sparkgap small. Also an array of at least 20 resistors 22KOhm come in handy. These actions will make this powerfull generator more civilised. Although I have experienced with many HV systems this relatively small unit will shock you very hard when you are foulish enough to try how hard. This generatir is not suitable to replace a Rhumkorff spark inductor, van de Graaf- or a Wimshurst generator. It can however be used in the primary of a Teslatransformer, in wich case 400KV can be reached (use extra capacitors+ resistors to reduce chargecurrent and sparkgap max 10mm.) runningtime a few seconds. I think it can be used (in a modified setup) to make an electric fence. For igniting a gasflame it has an overkill, the 7KV unit Banggood sells is more appropriate. The max voltage exeeds 20KKV but 400 KV or more is an exaggeration. Because these kind of generators can damage themselve easily, you can purchase 3 or 5 at one time, so you have a spare! (Murphy's law, you know)

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  • 10/02/2017

    It definetely is not 400 KiloVolts, but is is a decent amount for a spark. The sparks are loud. You need atleast 5 Volts input to get a spark. I suggest using a 9 volt battery so you will get about 6 to 8 milimeters of spark. this equals to about 24 KiloVolts max of output as I calculated it. So the description is not correct, but it is a nice item. I created a taser from it using 5 AA batteries. :)

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  • 17/02/2016

    Its a transformer 5V to around 10kV (not even close to that mentioned 400kV), with an embedded multivibrator, so the output is a kind of Taser. The output voltage has specific polarity, so you can use it with a pin on the minus pole to ionize the air, or connect a few modules In series (with attention to polarity) and produce higher voltages. I connected 3 in a row and got 4 cm spark, which means around 40kV. Output current capability is very low, and this is normal, since the secondary winding has a 20kOhms resistance. Good bargain for its cost, and good for experiments.

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  • 04/09/2018

    3Pcs DC 3.7V-6V To 400KV Boost Step Up Module High Voltage Generator

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  • 05/02/2018

    وصلت الشحنة بحالة جيدة وبمدة ٤٦ يوم وهو عبارة عن مجموعتين كل مجموعة عدد ٣ حبات والاجمالي ٦ حبات لرفع الفولت من ٣٧-٦ فولت الى ٤٠٠ كيلو فولت

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  • 26/03/2022

    ez jó termék 14 nap, hogy megkapja

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  • 31/05/2021

    Will be tried later.

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  • 19/03/2019

    مكتفة جميلة . تقوم بتحويل 3.5 ڤولت الى 400000 ڤولت .

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  • 25/09/2018

    produto aparentemente de boa qualidade no teste funcionou como deveria

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