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Re: Timer problems
- To: ukha_d@xxxxxxx
- Subject: Re: Timer problems
- From: Nigel Orr <nigel.orr@xxxxxxx>
- Date: Mon, 23 Nov 1998 14:15:13 +0000
- Delivered-to: listsaver-egroups-ukha_d@xxxxxxx
- Mailing-list: contact ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
At 13:23 23/11/98 -0000, you wrote:
>The Solid State Relays look cool, especially since they have zero volt=
phase
>switching. Considerably more expensive once you add a power supply
&
>heatsink though. :-(
Power supply?- sort of- you could just drive them from a cheap mains
adaptor, plugged into an X-10 switch... pretty clumsy though...
>Farnell do SSR's capable of switching 25A 600V with a 1 second overload
>rating of 64A and a single cycle surge of 175A.
Heatsink? Maybe- I don't have the Farnell data in front of me, and I can't
see them in RS, but if they can switch 25A, you might not need a heatsink
at 13A- look at the power dissipated and the maximum power which the module
itself can dissipate.
Again, not sure of prices of the solid state relays, but if you look at
contactors, prices are around =A320, and you'll probably want a little
DIN-rail mounting box to put it in.
Nigel
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