Comments on: Scrounging a Desk Phone http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/ Microcontrollers Electronics Hobby Sun, 28 Mar 2010 03:07:45 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: David http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/comment-page-1/#comment-1643 David Sun, 24 May 2009 05:52:06 +0000 http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/#comment-1643 I have a person get me old phones at flea markets,yard sales all the time.Cost 1.00 or 2 they have alot of great parts.would love to fine some with that type display. I have a person get me old phones at flea markets,yard sales all the time.Cost 1.00 or 2 they have alot of great parts.would love to fine some with that type display.

]]> By: Jason http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/comment-page-1/#comment-1636 Jason Wed, 20 May 2009 22:10:31 +0000 http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/#comment-1636 TECOM 561-100006 HJ66 0224 Probably a DC to DC converter TECOM 561-100006 HJ66 0224

Probably a DC to DC converter

]]> By: Charles Stutzman http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/comment-page-1/#comment-1630 Charles Stutzman Tue, 19 May 2009 20:57:55 +0000 http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/#comment-1630 I couldn't find good data on the white parts, but my wife, an electrical engineer, knows the manufacturer and they primarily do capacitors and such. But a spark gap surge protector would make sense on a phone system. I found something on optoisolators, but could not find data sheets on them, so I left that out, not intentionally just missed it when looking over notes. Charles S. I couldn’t find good data on the white parts, but my wife, an electrical engineer, knows the manufacturer and they primarily do capacitors and such. But a spark gap surge protector would make sense on a phone system.

I found something on optoisolators, but could not find data sheets on them, so I left that out, not intentionally just missed it when looking over notes.

Charles S.

]]> By: Berni http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/comment-page-1/#comment-1627 Berni Tue, 19 May 2009 14:09:08 +0000 http://www.uchobby.com/index.php/2009/05/19/scrounging-a-desk-phone/#comment-1627 I have a few hints. The 4 pin chips are probably optoisolators and the white thing in the picture before might be a spark gap type surge protection rather than a capacitor But that LCD is a great find. Oh and it might be worth to type in a few partnumbers of the SMD chips on the board, sometimes you strike lucky and find a chip thats acualy useful. I have a few hints. The 4 pin chips are probably optoisolators and the white thing in the picture before might be a spark gap type surge protection rather than a capacitor

But that LCD is a great find. Oh and it might be worth to type in a few partnumbers of the SMD chips on the board, sometimes you strike lucky and find a chip thats acualy useful.

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