DIYAPASON-L Digest #475 - Friday, December 28, 2001
 
Wind system progress
  by <Mpmollerorgan@aol.com>
Diode switches?
  by "rtadams" <rtadams@itsnet.com>
Re: [Residence Organs]  Diode switches?
  by "Blaine Ricketts" <blainericketts@attbi.com>
 

(back) Subject: Wind system progress From: <Mpmollerorgan@aol.com> Date: Fri, 28 Dec 2001 17:00:36 EST   It's amazing how many hours it takes, but now I have both reservoirs installed to the main windtrunk, the trunk all closed up with the end = caps and gasket it needed. I also opened the blower cover to install the two = angle brakets that hadn't been, stuffed in a little felt where some of it was missing, and installed the last motor mount bolt properly etc etc. So now I am at the end of the trunk under the chamber where the top = access plate has two 4" PVC couplers installed for winding two of the four = chests, the other two chests (in the great) won't be ready to wind for a while and =   will have two wind connections installed elsewhere on the trunk when they =   are ready for wind.   Looks like I can batten up the bungs on one chest that is done and hook it = up to the windline and see what happens :) The relay wiring still has a lot to be done yet though so it won't be playable directly from the console just yet.   Hey, does anyone else have the Healey Willan 1965-67 historial recordings = CD?   Some great stuff on it and I really like two hymns on it, and I admit Ive =   set the thing to play those two tracks repeatedly while I was working on = my reservoirs and in the basement and even after two days I didn't get tired = of them :)   Pretty interesting booklet in it that tells how the recordings were done = by Peter Nikiforuk by dragging in a reel to reel recorder (remember that was 1965!!) for Mass a number of times over a long period and how Healey and the = Pastor etc did NOT like the idea of Peter recording the mass one bit! The blank tapes cost then $20 which now is a little over $100, but the = sound quality is excellent, nice live space and all the rest.     Randall http://members.aol.com/mpmollerorgan/  
(back) Subject: Diode switches? From: "rtadams" <rtadams@itsnet.com> Date: Fri, 28 Dec 2001 15:22:27 -0700   This is a multi-part message in MIME format.   ------=3D_NextPart_000_0006_01C18FB3.75504F80 Content-Type: text/plain; charset=3D"iso-8859-1" Content-Transfer-Encoding: quoted-printable   I have a Moller Artiste from 1948 in my living room. As I play it throws = =3D all sorts of EM noise. I'm sure there is a simple application of some =3D diodes that would eliminate the spark induced RF noise, but I haven't =3D been able to find it on the net yet. Any advice from DIY? I have seen =3D the ATOS chime switch, but I was looking for something simpler.   Thanks in advance. Richard Adams Moller Artiste (rewired and ventus'd) 1M/P 4R tracker cabinet organ   ------=3D_NextPart_000_0006_01C18FB3.75504F80 Content-Type: text/html; charset=3D"iso-8859-1" Content-Transfer-Encoding: quoted-printable   <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3D3DContent-Type content=3D3D"text/html; =3D charset=3D3Diso-8859-1"> <META content=3D3D"MSHTML 5.50.4207.2601" name=3D3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D3D#ffffff> <DIV><FONT face=3D3DArial size=3D3D2>I have a Moller Artiste from 1948 in = my =3D living=3D20 room. As I play it throws all sorts of EM noise. I'm sure there is a =3D simple=3D20 application of some diodes that would eliminate the spark induced RF =3D noise, but=3D20 I haven't been able to find it on the net yet. Any advice from DIY? I =3D have seen=3D20 the ATOS chime switch, but I was looking for something =3D simpler.</FONT></DIV> <DIV><FONT face=3D3DArial size=3D3D2></FONT>&nbsp;</DIV> <DIV><FONT face=3D3DArial size=3D3D2>Thanks in advance.</FONT></DIV> <DIV><FONT face=3D3DArial size=3D3D2>Richard Adams</FONT></DIV> <DIV><FONT face=3D3DArial size=3D3D2>Moller Artiste (rewired and =3D ventus'd)</FONT></DIV> <DIV><FONT face=3D3DArial size=3D3D2>1M/P 4R tracker cabinet=3D20 organ</FONT></DIV></BODY></HTML>   ------=3D_NextPart_000_0006_01C18FB3.75504F80--    
(back) Subject: Re: [Residence Organs] Diode switches? From: "Blaine Ricketts" <blainericketts@attbi.com> Date: Fri, 28 Dec 2001 14:43:51 -0800   Does the noise show up in some other equipment in your home? I have a three rank Moller of the same vintage. It does not seem to cause any problems with other equipment. The only way to get rid of the back EMF is to install a diode for each note. This could be anywhere that it was convenient like the console junction board, chamber junction board or the magnets themselves. Keep the line side of the diode to the positive so you don't have a short.   You speak of not being able to find this on the net. I'm not surprised but I can tell you that back EMF diodes are on the output of every transistor relay I've ever seen except the Allen pipe drivers used to interface pipes with digital organs.   Blaine Ricketts     > rtadams wrote: > > I have a Moller Artiste from 1948 in my living room. As I play it > throws all sorts of EM noise. I'm sure there is a simple application > of some diodes that would eliminate the spark induced RF noise, but I > haven't been able to find it on the net yet. Any advice from DIY? I > have seen the ATOS chime switch, but I was looking for something > simpler. > > Thanks in advance. > Richard Adams > Moller Artiste (rewired and ventus'd) > 1M/P 4R tracker cabinet organ