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'[EE:] About relays'
2004\04\26@134650 by Omer YALHI

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As I am looking through the relays in Jameco, I came across a part #175214.
This part is specified as input from 3-32VDC and output is 280VAC.  Since
the output is rated in terms of DC, does this mean that it cannot be used
for DC apps?  If it can be used, how do I figure out the maximum DC voltage
that can be applied to it for switching?

Thanks in advance,

Omer

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2004\04\26@135521 by Spehro Pefhany

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At 08:48 PM 4/26/2004 +0300, you wrote:
>As I am looking through the relays in Jameco, I came across a part #175214.
>This part is specified as input from 3-32VDC and output is 280VAC.  Since
>the output is rated in terms of DC, does this mean that it cannot be used
>for DC apps?  If it can be used, how do I figure out the maximum DC voltage
>that can be applied to it for switching?

It has a triac output, so it is not very useful for switching DC.
(it will switch "on" but not off until the load current drops below the
holding current).

It is most useful for switching AC (from 24VAC to 280VAC) at mains
frequency.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
spam_OUTspeffTakeThisOuTspaminterlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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2004\04\26@141204 by Omer YALHI

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Spehro Pefhany said:

It has a triac output, so it is not very useful for switching DC.
(it will switch "on" but not off until the load current drops below the
holding current).

It is most useful for switching AC (from 24VAC to 280VAC) at mains
frequency.

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So I should stick with DC version of the relay if I want to switch 24VDC,

Thank you Spehro,

Omer

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