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You could have the intercom signal with any voltage you like - 10V AC (blue wire buzzers), 18V AC (white wire buzzers), 110V AC (the ringers in the phone) or even 24VDC (Flat DC buzzers).
Sam And you can send GRD if the circuits require it.
Arthur P. Bloom
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Moderator-1A2, Cabling
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Moderator-1A2, Cabling
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Originally posted by Arthur P. Bloom: You could have the intercom signal with any voltage you like - 10V AC (blue wire buzzers), 18V AC (white wire buzzers), 110V AC (the ringers in the phone) or even 24VDC (Flat DC buzzers).
Sam Yup. Use the ground to close a relay to set off any device you want. My all time favorite was making the toilet flush (as I'm sure I discussed in an earlier thread). Sam
"Where are we going and why are we in this hand basket?"
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Ed: Just be careful to maintain proper polarity or you'll be blowing fuses. You were right about the polarity and fuses. Oops. Now, I'm stalled looking for replacement 24E and 24B fuses which I'm having trouble locating in lots of less than 100. Do any of you guys have any ideas where I might locate replacement 24E or 24B fuses for my 551A KSU? Any help would be much appreciated. Mark
Mark
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Joined: Dec 2005
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RIP Moderator-Mitel, Panasonic
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RIP Moderator-Mitel, Panasonic
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Try the evil-bay. 
When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Yeah, there's a store on E-Bay called "Jakes Old Western Electric Stuff". He has plenty of them and his prices are really good.
Ed Vaughn, MBSWWYPBX
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Joined: May 2007
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Moderator-1A2, Cabling
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Moderator-1A2, Cabling
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I confess to not remembering the nomenclature, and as I recall Buss did not use the same terminology.
Am I correct in thinking you are referring to the small flat brown fuses shown in the photos above?
If so, what Amperage and how many pieces of each are you looking for?
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Nov 2009
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Thanks, Ed. Sam: That's right; the little flat fuses. They're not easy to find. The 24B is 3 amps and the 24E is one-half amp. I may have found a vendor on eBay. He's checking his inventory now. The fuses look like this: ![[Linked Image from phase2.us]](https://phase2.us/mjp/fuses.jpg) Mark Mark
Mark
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Joined: May 2007
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Moderator-1A2, Cabling
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Moderator-1A2, Cabling
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Well, I have a few down in the dreaded basement, I believe I only have 2, 5 & 8 Amp though.
If you can't find the exact sizes let us know and we should be able to tell you what you can safely substitute.
Sam
"Where are we going and why are we in this hand basket?"
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I would also recommend an eBay seller: Cougar Valley Phones and More. I have gotten a few phones from them and they a great resource- good stuff! https://myworld.ebay.com/cougarvalleyhwt
Tennessee Technology Solutions, LLC | "Business technology solutions reimagined." | (423) 665-9995 | www.423tech.com
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If I still have any 584 panels you can have the fuses
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