Nameless Box Mod build.

[VapingBad]

Found the spec the resistor needs to be at least 2 V if you put the probes of a meter at each end, V_GS the voltage between the Gate and Source pins.

[VapingBad]

Dec 13, 2014 3:25:41 GMT Steve (VapeStorm) said:

just had a google myself and someone on potv is havimg same problem aboit 20 miles away from me lol Thread

www.modmaker.co.uk/Mod-Making-Supplies/components/N-Channel-Mosfet-195A-40V-IRLB3034PBF

Follow Chegs advice, if he is the same Chegs on breaktru.com he has forgotten more than I know on this.

[Steve (VapeStorm)]

Giz a clue, can you tell I know little about electronics

[VapingBad]

I am confusing Chegs with CraigHB, I know, I'm dyslexic, but you need to make sore the FET is completely on so you must have enough V_GS (>= 2 V if I am reading the spec right) or it will try and amplify it, you probably don't want it too much higher (Edit: less than 10 V, you are not going to get that from the battery so don't worry about that), but I am not sure. If the voltage is wrong check all the connections, then we need to select a different value resistor to cure it.

[Steve (VapeStorm)]

Dec 13, 2014 3:37:07 GMT VapingBad said:

I am confusing Chegs with CraigHB, I know, I'm dyslexic, but you need to make sore the FET is completely on so you must have enough V_GS (>= 2 V if I am reading the spec right) or it will try and amplify it, you probably don't want it too much higher, but I am not sure. If the voltage is wrong check all the connections, then we need to select a different value resistor to cure it.

Which setting on multimeter?

[VapingBad]

Right 2 clicks DC voltage 0-200 V

Have you wired it like so?

[VapingBad]

[Steve (VapeStorm)]

VapingBad yes thats how I wired it apart from I had 2 wire coming of battery pos+ going to 510+ and switch, so same thing. Multimeter is coming out at 0, but is zero when I put leads together aswell so I think its kaput

[VapingBad]

Dec 13, 2014 3:51:57 GMT Steve (VapeStorm) said:

VapingBad yes thats how I wired it apart from I had 2 wire coming of battery pos+ going to 510+ and switch, so same thing. Multimeter is coming out at 0, but is zero when I put leads together aswell so I think its kaput

Do you have an atty on it, prob should.

If with an atty on it there is no voltage across the resistor then there is a bad connection or dead component.

I have to turn in soon and will be away from the PC till Sunday, maybe Ripshod or thatguy could help.

Edit: also Resnik has made some these.

[VapingBad]

Yea in voltage mode it should read 0 when touching the leads and 3.5-4.2 V when ate each end of the battery.

[Steve (VapeStorm)]

Thanks for your help mate, im going to turn in soon. Just for a quick lol this multimeter is reading 8.4 on a single full charged vtc4 lol. Bin time

[VapingBad]

Dec 13, 2014 4:02:12 GMT Steve (VapeStorm) said:

Thanks for your help mate, im going to turn in soon. Just for a quick lol this multimeter is reading 8.4 on a single full charged vtc4 lol. Bin time

I looked closer at the pic of the meter and I told you to put it in AC (wavy line) should go left 3 clicks to 20 it late, I've been drinking, short sighted, its been a long year, ....

[Steve (VapeStorm)]

Thanks again mate get yourself t bed lol.

[Resnik]

Hmms I have never had my mosfet's get extremely hot when using. I use almost the exact same setup, but I use a 1/2 watt resistor instead of a 1/4. Was it an instant hot on the mosfet, like as soon as you pushed the button it got hot right away? Did it fire well? Light up the coils?

Last 3034 mosfet build. Little bit more complex. It's series, and 26650, but basically the same set up on the mosfet.



More like yours. Parallel mosfet. 

[Steve (VapeStorm)]

Dec 13, 2014 4:41:39 GMT Resnik said:

Hmms I have never had my mosfet's get extremely hot when using. I use almost the exact same setup, but I use a 1/2 watt resistor instead of a 1/4. Was it an instant hot on the mosfet, like as soon as you pushed the button it got hot right away? Did it fire well? Light up the coils?

Last 3034 mosfet build. Little bit more complex. It's series, and 26650, but basically the same set up on the mosfet.



More like yours. Parallel mosfet. 

Hey Resnik, yeah It got hot straight away, had good fire on the atty. I checked the voltage across the mosfet while firing like vapingbad said and got 3.5ishV batts were at 4.16 so theres a fair bit of voltage drop somewhere.