Relay Question

SRMcGee · 28th January 2009, 08:06 PM

Folks:

I'd like to build a simple relay-based source selector. Each relay will be connected to an input and a front panel-mounted switch, which will toggle between the various relays (and corresponding inputs). Can anyone tell me if the Omron G5V series (specifically, part no. G5V-2-H1-DC12) is appropriate for this application? I like this DPDT relay because of its size, price and the fact that a mounting base is available (part no. P6B-04P), but don't know if there is something better suited for line level signals.

Many thanks,
Scott

raudio1969 · 31st January 2009, 01:41 AM

The company I work for has been using this Omron part for many years for switching audio and video with no problems. I remember once they tried to switch to a lower cost Fujitsu part. We found in the production line that it had problems switching audio at low levels. We noticed that there is a spec called "minimum permissible load". The Omron is 10uA at 10mVDC, where the Fujutsu part was much higher, if I remember correctly 100mA at 10mVDC. This is a spec I will forever look at very carefully.

SRMcGee · 31st January 2009, 09:03 PM

raudio1969:

Many thanks!

Regards,
Scott

28th January 2009, 08:06 PM	#1
SRMcGee diyAudio Member Join Date: May 2004 Location: Wynnewood, PA	Relay Question Folks: I'd like to build a simple relay-based source selector. Each relay will be connected to an input and a front panel-mounted switch, which will toggle between the various relays (and corresponding inputs). Can anyone tell me if the Omron G5V series (specifically, part no. G5V-2-H1-DC12) is appropriate for this application? I like this DPDT relay because of its size, price and the fact that a mounting base is available (part no. P6B-04P), but don't know if there is something better suited for line level signals. Many thanks, Scott

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31st January 2009, 01:41 AM	#2
raudio1969 diyAudio Member Join Date: Sep 2007 Location: N38	The company I work for has been using this Omron part for many years for switching audio and video with no problems. I remember once they tried to switch to a lower cost Fujitsu part. We found in the production line that it had problems switching audio at low levels. We noticed that there is a spec called "minimum permissible load". The Omron is 10uA at 10mVDC, where the Fujutsu part was much higher, if I remember correctly 100mA at 10mVDC. This is a spec I will forever look at very carefully.

31st January 2009, 09:03 PM	#3
SRMcGee diyAudio Member Join Date: May 2004 Location: Wynnewood, PA	raudio1969: Many thanks! Regards, Scott

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