Re: [CAD_CAM_EDM_DRO] Re: SS Relays

probably the easiest too, unless you've got a hundred or so rail mounted
24V relays (massive tool gloat...)

erie

Harvey White wrote:

>On Fri, 21 Nov 2003 15:03:23 -0000, you wrote:
>
>
>
>>Ah! I ran into this problem and couldn't figure out what was going on
>>for the life of me.
>>
>>
>
>Triacs and SCRs turn on, and stay on until either 1) the current drops
>below a set value (you can't set it), or the voltage reverses
>(reducing the current).
>
>Therefore, good only for AC or applications where there will be
>another way of turning off the current...
>
>
>
>>What type of relay do you use for switching DC?
>>
>>
>
>SSR, but one with an FET or bipolar transistor. A good cheap
>electromechanical relay is the headlight relay in a car. 12 volts in,
>30 amps capability.
>
>Harvey
>
>
>
>>Thanks,
>>Chris
>>
>>
>>
>>
>>>From: Mark Thompson
>>>
>>>Hi
>>>
>>>www.digikey.com is a great place to get most anything electronic.
>>>
>>>Most relays that are zero crossing are AC only (IE: Triac based).
>>>
>>>
>>So if
>>you are
>>
>>
>>>trying to switch a DC source the AC type SSR will turn it on but
>>>
>>>
>>not turn
>>it off.
>>
>>
>>
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>OFF Topic POSTS: General Machining
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>http://www.metalworking.com/news_servers.html
>
>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
>NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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