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Speccing a DPDT relay

 
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Speccing a DPDT relay
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Minky
Senior Member


Joined: 16 Oct 2016
Posts: 417
Fav. Blaster: Rampage
Location: Derby



Post Speccing a DPDT relay  Reply with quote
...for a RS pusher circuit.

Before I go further, I haven't bought anything, I'm not buying anything yet. Once I've settled on my idea for the pusher circuit I'll draw it up and put it up for critique but just want to check the components exist for what I'm trying to do.

The circuit will be 3s and feature up to a Hellcat pusher though maybe Honey Badger. I think the Hellcat is 22amp at stall but I'm struggling to find a correctly rated relay that is as small as possible..

So far I've come up with..

https://www.amazon.co.uk/gp/aw/d/...p;dpID=41mpFIhJTxL&ref=plSrch

Does anyone know a good place to look or if relays are similar to other switching gear whereby their rating doesn't reflect their ability to withstand a burst, rather what they are happy with continuous?

Thanks
Tue Jan 17, 2017 8:39 am View user's profile Send private message
Franksie
Nerf Hippy


Joined: 11 May 2016
Posts: 415
Fav. Blaster: Stryfe
Location: Telford



Post Reply with quote
This is total overkill, you know?
Tue Jan 17, 2017 9:22 am View user's profile Send private message
OldNoob
Foam Data Collector


Joined: 07 May 2013
Posts: 4833
Fav. Blaster: Xtreme 180 Rapidstrike
Location: In the Boonies



Post Reply with quote
I wouldn't use a relay or a honeybadger for that job. Spec is a job for Boff, as he uses a similar idea in the Stampede kit.

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Tue Jan 17, 2017 9:43 am View user's profile Send private message Send e-mail
Minky
Senior Member


Joined: 16 Oct 2016
Posts: 417
Fav. Blaster: Rampage
Location: Derby



Post Reply with quote
Franksie, possibly.  Question for a question.  How do you change over two positive lines, one from one circuit to another,  the other from open to closed at the same time without using a DPDT switch that is limited where it can fit on the blaster?

Because I've thought about it, I suppose I could use a P-channel Mosfet on the open/close circuit and link it to a SPDT switch but of course then that'd have to be rated to the Hellcats amps and, if I don't want to wire fat wire about the blaster, in a non-ergonomic place.

Alternatively I could use a correctly rated DPDT relay in the space I have right in the middle of where I need it use and wire using thin, easy wire to a low rated but pretty switch wherever I want it.

... But I'm open to suggestions when I stick up my circuit diagram when I want it looking at. Just need to know about relays at the moment.



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Tue Jan 17, 2017 8:35 pm View user's profile Send private message
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