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Solid State Relay


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jazzcustom131 
Copper - Posts: 175
Copper spacespace
Joined: October 10, 2004
Location: United States
Posted: January 11, 2005 at 5:21 PM / IP Logged  

Okay, so I have in my possesion an NTE Electronics, INC, 4-32VDC 480 VAC 75 AMP solid state realy. We use these things in the theater I work in as part of the House Light Dimmer. It has a number: RS3-ID75-41, I guess that is eihter a model number or serial number. The ones currently in the rack are 2-26 volts, and I think those are the ones i'm looking for. Wither way, does anyone happen to know where I can get more of both voltage. I will ask My tacher(it's a perfroming arts center built onto the high school, my teacher is also my boss......) which one we need. All I know is that we hae both voltages in there, and one of them causes the lights to "shake" at low levels. I wanna get rid of that, so I gotta replace the relays. Thanks

Lance

Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
haemphyst 
Platinum - Posts: 5,053
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: January 11, 2005 at 6:34 PM / IP Logged  
Here is what I was able to locate in Google, in as much as a search for suppliers... That part number, BTW is RS3-1D75-41, and there is really nothing to locate on the web, unfortunately. They run about 65 to 75 dollars each - OUCH...
This is a link to a picture on the NTE website... and this is a link to the manufacturers web page with specs for that relay.
Hope this helps! Let me know if you need more info, and I'll do what I can!
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
jazzcustom131 
Copper - Posts: 175
Copper spacespace
Joined: October 10, 2004
Location: United States
Posted: January 11, 2005 at 10:48 PM / IP Logged  
So what else other than the racks, can I use these things in? I guess the easiest question would be to ask, what do they do?
Greed is for amateurs.
Disorder,chaos,anarchy now THAT is fun!!
haemphyst 
Platinum - Posts: 5,053
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: January 12, 2005 at 9:11 AM / IP Logged  
They do the same thing as a Bosch relay, just no moving parts. The input (control) voltage, in this case - 4 to 32 volts DC, turns on an internal device called an SCR (silicon controlled rectifier) allowing current to flow ONE way, in this case - 36VAC minimum to 530VAC maximum - at UP TO 75Amps. These particular SSRs have two SCRs in them, back to back, allowing two way current flow. For the full 75A current capability, they REQUIRE a proper heatsink - use what is recommended by NTE. They are really only good for DC control of an AC circuit, they are an on-and-off device - i.e. no fading, and they CAN be (electrically) noisy, unless proper design steps are taken in the manufacture of the device.
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

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