Stacking fets? I can solder but i dont know where or what...

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Thu, 07/08/2004 - 14:30
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Wagge
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Joined: 07/06/2004
Stacking fets? I can solder but i dont know where or what...

Hi, newbi from Sweden.

Ok, i know how to solder, but i don´t kow what is stacking your fets? And how do you do it? Could anyone please draw a picture in Paint and put it upp here or mail me it?

Would be very happy for some help.

Thanks from Sweden.

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Thu, 07/15/2004 - 03:06
PurpleDucky
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Joined: 08/18/2002
Re: Stacking fets? I can solder but i dont know where or what...

this is rather easy to describe so ill give it a whirl.... if you open up your miniz youll see the esc board. flip it over and by the 2 holes where u connect the wire terminals from the motor are 2 identical chips, they should have the number 3004 on them. there are also a pair up in front that have small wires connected to them which come from the servo motor. to stack you solder them parallel (all facing the same direction use the #'s on them as a reference). solder each leg individually. usually u can five 2x5 (2 stacks of 5) FETS.... IMO: dont stack stock fets, the 3004's.. try to get a hold of the IRF7389 or the Si####'s.... there should be a thread on this in the electronics sector about these fets... these tend to be the more efficient for the racers....

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Sat, 07/17/2004 - 17:12
Charlie_Brown
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Joined: 01/17/2004
Re: Stacking fets? I can solder but i dont know where or what...

You don't have to solder ALL the legs seperately, the legs facing the motor terminals can be soldered together, since they all go to one wire anyway.

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Tue, 07/20/2004 - 16:21
PurpleDucky
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Re: Stacking fets? I can solder but i dont know where or what...

keeping the the amount of solder down reduces resistance

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Tue, 07/20/2004 - 22:52
Charlie_Brown
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Joined: 01/17/2004
Re: Stacking fets? I can solder but i dont know where or what...

PurpleDucky wrote:

keeping the the amount of solder down reduces resistance

Ummm....noooooo. The more solder on these things, the LESS resistance bcuz of more electricity conductivity. If there's less, then there's less material for the power to flow through, meaning more resistance.

Chuckster...

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Sat, 07/24/2004 - 22:32
Wagge
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Joined: 07/06/2004
Re: Stacking fets? I can solder but i dont know where or what...

Thanks, I´ll try it out.

Mini-Z Sweden

MonsterMT

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Wed, 08/04/2004 - 23:42
PurpleDucky
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Joined: 08/18/2002
Re: Stacking fets? I can solder but i dont know where or what...

Charlie_Brown wrote:

[quote:fc30b6d5e5="PurpleDucky"]keeping the the amount of solder down reduces resistance

Ummm....noooooo. The more solder on these things, the LESS resistance bcuz of more electricity conductivity. If there's less, then there's less material for the power to flow through, meaning more resistance.

Chuckster...

thnx for the correction... n00bish mistake there.. :roll:

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