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12th June 2005, 01:17 AM
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#1 |
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diyAudio Member
Join Date: Jan 2003
Location: USA
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Relays for speaker protection
Relays for speaker protection
Hello, I posted this in electronics but haven't gotten any replies so I thought I'd try posting it here. I am building Rod Elliots Speaker protection circuit to use in my leach amp and I am trying to choose a relay. Below are two choices: NTE R25-1D16-12 http://www.nteinc.com/relay_web/pdf/R25.pdf or Tyco's OZ series http://relays.tycoelectronics.com/datasheets/OZ-OZF.pdf Does anyone have any experience with this. Why is the NTE relay 8 dollars while the tyco is only 1? Are there different characteristics that I am not noticing (build quality?) One final question for a different but related project, Mouser Electronics claims that this relay below is rated at 10A but the data sheet seems to say that its 5A at both 240V and 120V. Is it 10A or 5A at 120V? Can anybody tell? http://relays.tycoelectronics.com/datasheets/OMI-2P.pdf Any input on either topic would be greatly appreciated Thanks in advance Wes
__________________
Anything worth doing is worth doing right... and redoing to make it better... and again to fix it back the way it was. |
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12th June 2005, 03:20 PM
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#2 |
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diyAudio Member
Join Date: Oct 2002
Location: Croatia
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Hi,
The most important parameter for a speaker protection relay is DC current capability at resistive/inductive load. For Leach amp speaker protection relay I'd suggest this one (one for each channel): G8P-1A4P-DC24 ( price around $3) http://www.mouser.com/index.cfm?hand..._pcodeid=65309 Regards, Milan |
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12th June 2005, 06:26 PM
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#3 |
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diyAudio Member
Join Date: Jan 2003
Location: USA
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Thanks for the advice.
I'll be using the leach amp to drive electrostatic speakers. I wonder, would a capacitive load cause any problems with this relay? -Wes
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