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magnetic switches

R/C Submarine modelers

magnetic switches

Postby P Webster » Sat Mar 15, 2014 4:35 am

Does anyone know of a supplier of magnetic reed switch and relay assemblies suitable for switching on the complete system of the sub (ie main battery and receiver battery.
I am also looking at using 3 x 2v 8amp Cyclon batteries instead of the recommended 6v 12amp SLA battery. Except for the reduced running time can anyone see any other problems this could cause?
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Re: magnetic switches

Postby KevinMc » Sat Mar 15, 2014 6:59 am

Hi,

I might have something for you. Please check your PM
Kevin McLeod - Oscar II driver
KMc Designs
SC #2870
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Re: magnetic switches

Postby Ober Freak » Sat Mar 15, 2014 3:32 pm

I use these Relays,
1 in my Seawolf and 2 in parallel in my U47, with one reed contact per coil.
Never had any problems with them.
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Re: magnetic switches

Postby Johnredearth » Wed Aug 20, 2014 5:49 pm

Get door switches off ebay. $1.50 each. Add a couple of relays and you have the perfect thing.
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Re: magnetic switches

Postby sam reichart » Wed Aug 20, 2014 7:31 pm

Don Spielberger used to build and sell them. (Loyalhanna Dockyard...)
what were once vices are now habits
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Re: magnetic switches

Postby Pedro Gómez » Wed Sep 24, 2014 7:00 am

Engel modellbau has, and Norbert Bruggen Modellubootspezialitaten too.
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Re: magnetic switches

Postby Sub culture » Wed Sep 24, 2014 7:40 am

Reed switches can be found very inexpensively on ebay. You want a pair of normally open type often abbreviated to 'NO'.

For a relay, you require a bistable unit. These can be a little trickier to find, but are available. You should aim to get one with voltage coils similar to your system voltage.

If you want to switch very high currents you can have the relay contact(s) pick-up the gate of a P-channel Mosfet to switch the load, or perhaps switch the low side with an N-channel Mosfet (anyone tried that?). To switch the high side with an N-channel you would need a driver chip to raise the gate about 10 volts.
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Re: magnetic switches

Postby Johnredearth » Thu Sep 25, 2014 5:01 pm

For relays, check these out. Fabulous build quality, very very cheap

http://www.ebay.com.au/itm/131164167875 ... 1497.l2649

I have just installed one of these with a door switich on a surface boat!

Cheers

John
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Re: magnetic switches

Postby Johnredearth » Thu Sep 25, 2014 5:07 pm

whoops I forgot I have something on this

http://youtu.be/vVN4Aen0LLk

John
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Re: magnetic switches

Postby Scott T » Fri Sep 26, 2014 1:47 pm

Nice sub video John.
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