DIYAPASON-L Digest #13 - Friday, January 21, 2000
 
Re: [Residence Organs]  Building Traps
  by "VEAGUE" <dutchorgan@svs.net>
Re: [Residence Organs]  Building Traps
  by <DEMPAR1@aol.com>
RE: [Residence Organs]
  by "Davies, Gary" <gary.davies@BeldenBrick.com>
Re: [Residence Organs]  A question about something "different"
  by <Pipewheezr@aol.com>
Re: [Residence Organs]  A question about something "different"
  by "George W. Jenista" <hiplain@flash.net>
 

(back) Subject: Re: [Residence Organs] Building Traps From: "VEAGUE" <dutchorgan@svs.net> Date: Fri, 21 Jan 2000 00:41:02 -0500   Paul... I built mine from off the top of my head AND from working on = many in the past. There is a man in Cali. -I think- that specializes in just traps.   He has an ad in Theatre Organ.   Rick      
(back) Subject: Re: [Residence Organs] Building Traps From: <DEMPAR1@aol.com> Date: Fri, 21 Jan 2000 00:56:34 EST   In a message dated 01/20/2000 11:00:42 PM Central Standard Time, parndt@worldnet.att.net writes:   << Since the organ I have did not have any of the traps anymore (it was churchified years ago and the traps are probably in a landfill somewhere) I will = probably need to build some >>   You can get excellent replacement traps from Don Shaw out in California. I = am using one of his cymbal machines and it beats Wurlitzer's design. He has = an ad in the ATOS magazine. Bob Arndt (Arndt Organ Supply) also has some replacement toy counter parts in his catalog.  
(back) Subject: RE: [Residence Organs] From: "Davies, Gary" <gary.davies@BeldenBrick.com> Date: Fri, 21 Jan 2000 07:35:29 -0500   This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible.   ------_=3D_NextPart_001_01BF640C.00106D88 Content-Type: text/plain   Welcome Jon and Good Luck!   -----Original Message----- From: Jon [SMTP:sparky@chesco.com] Sent: Thursday, January 20, 2000 8:59 PM To: Residence Organ List Subject: [Residence Organs]   Hi! My name is Jon and I'm 17. I'm rebuilding an organ into my living room (currently 7 ranks soon to be around 12). With my parents blessings of course. (a little sarcasm there). Maybe somebody has done something like this before but I somehow doubt it. This was the result of a lot of trial, error, and smoke. I think i may want to share it with the list, even though I just joined. (it seems theres a thread on rectifiers happening). If I'm a little off topic or the email's too long, just let me know......   Well when I got my moller (opus 9941) it had an orgalectra rectifier/power supply in it. Terrible little beast. Horrible ripple (the organ may not care but i'm a perfectionist) and pathetic regulation. Actually the ripple causes pre-empative burnout of LEDs and the lack of regulation doesn't help magnets either.   SOOO what i did (if you don't care you can stop reading here).... It had a saturable reactor. This is essentially a DC choke that has a winding in series with the main transformers primary. This not only reduces xformer voltage but prevents the choke from becoming saturated and ceasing regulation. Useless if ya ask me.   As it turned out, when 120 volts were applied to the beast, there were 50 across the SR and 70 across the transformer. Hmm... almost an even split... if the SR got disconnected from everything else and its voltage measured, one would find out it was putting out about 17 volts. hmm a little too high.... HOWEVER there was a perfectly matched xformer winding on the power transformer. I actually used the SR as a transformer. I paralleled the two "transformers" both with 12 ga. secondaries. I removed the crackhead celenium rectifier (i know i musta spelled that wrong!) and replaced that with a full wave bridge (rated 40 amps but WELL heat sinked). Selenium Rectifiers emit a poisonous gas under certain conditions, so i did NOT want the thing in my moller. Besides it was slow to "stop" current from flowing backwards.   So I now had 17 volts from the xformers going into the bridge. Then I took the rectified DC, ran it through the remaining inductor (no SR windings on this one) and then to 500,000 mf. of capacitance. This gave me 16.2 volts output. Pathetic. I then desgned and built a TIP/transistor based voltage regulator that holds the voltage at exactly 10.8 volts. Right where I want it.   Current into a 1/4 ohm load is 40 amperes which means i virtually eliminated internal resistance. The voltage at 40 amperes? It remains faithfully at 10.79.   jon       DIYAPASON-L: a Discussion list for owners and builders of their own Residence Pipe Organs. HOMEPAGE : http://www.diyapason.pipechat.org List: mailto:DIYAPASON-L@pipechat.org Administration: mailto:owner-DIYAPASON@pipechat.org   ------_=3D_NextPart_001_01BF640C.00106D88 Content-Type: text/html Content-Transfer-Encoding: quoted-printable   <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D3D"Content-Type" CONTENT=3D3D"text/html; =3D charset=3D3Dus-ascii"> <META NAME=3D3D"Generator" CONTENT=3D3D"MS Exchange Server version =3D 5.5.2650.12"> <TITLE>RE: [Residence Organs] </TITLE> </HEAD> <BODY>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">Welcome Jon and Good Luck!</FONT> </P> <UL> <P><A NAME=3D3D"_MailData"><FONT SIZE=3D3D2 FACE=3D3D"Arial">-----Original = =3D Message-----</FONT></A> <BR><B><FONT SIZE=3D3D2 FACE=3D3D"Arial">From:&nbsp;&nbsp; Jon =3D [SMTP:sparky@chesco.com]</FONT></B> <BR><B><FONT SIZE=3D3D2 FACE=3D3D"Arial">Sent:&nbsp;&nbsp;</FONT></B> = <FONT =3D SIZE=3D3D2 FACE=3D3D"Arial">Thursday, January 20, 2000 8:59 PM</FONT> <BR><B><FONT SIZE=3D3D2 =3D FACE=3D3D"Arial">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D3D2 = =3D FACE=3D3D"Arial">Residence Organ List</FONT> <BR><B><FONT SIZE=3D3D2 =3D FACE=3D3D"Arial">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT>= =3D </B> <FONT SIZE=3D3D2 FACE=3D3D"Arial">[Residence Organs]&nbsp; </FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">Hi!&nbsp; My name is Jon and I'm =3D 17.&nbsp; I'm rebuilding an organ into my living</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">room (currently 7 ranks soon to be = =3D around 12).&nbsp; With my parents blessings</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">of course.&nbsp; (a little sarcasm = =3D there).&nbsp; Maybe somebody has done something</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">like this before but I somehow doubt = =3D it.&nbsp; This was the result of a lot of</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">trial, error, and smoke.&nbsp; I =3D think i may want to share it with the list,</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">even though I just joined.&nbsp; (it = =3D seems theres a thread on rectifiers</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">happening).&nbsp; If I'm a little = off =3D topic or the email's too long, just let me</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">know......</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">Well when I got my moller (opus 9941) = =3D it had an orgalectra rectifier/power</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">supply in it.&nbsp; Terrible little = =3D beast.&nbsp; Horrible ripple (the organ may not</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">care but i'm a perfectionist) and = =3D pathetic regulation.&nbsp; Actually the ripple</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">causes pre-empative burnout of LEDs = =3D and the lack of regulation doesn't help</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">magnets either.</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">SOOO what i did (if you don't care = you =3D can stop reading here)....</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">It had a saturable reactor.&nbsp; = =3D This is essentially a DC choke that has a</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">winding in series with the main =3D transformers primary.&nbsp; This not only</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">reduces xformer voltage but prevents = =3D the choke from becoming saturated and</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">ceasing regulation.&nbsp; Useless if = =3D ya ask me.</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">As it turned out, when 120 volts were = =3D applied to the beast, there were 50</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">across the SR and 70 across the =3D transformer.&nbsp; Hmm... almost an even</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">split... if the SR got disconnected = =3D from everything else and its voltage</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">measured, one would find out it was = =3D putting out about 17 volts.&nbsp; hmm a</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">little too high.... HOWEVER there = was =3D a perfectly matched xformer winding</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">on the power transformer.&nbsp; I = =3D actually used the SR as a transformer.&nbsp; I</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">paralleled the two =3D &quot;transformers&quot; both with 12 ga. secondaries.&nbsp; I =3D removed</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">the crackhead celenium rectifier (i = =3D know i musta spelled that wrong!) and</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">replaced that with a full wave = bridge =3D (rated 40 amps but WELL heat sinked).</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">Selenium Rectifiers emit a poisonous = =3D gas under certain conditions, so i did</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">NOT want the thing in my = moller.&nbsp;=3D Besides it was slow to &quot;stop&quot; current</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">from flowing backwards.</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">So I now had 17 volts from the =3D xformers going into the bridge.&nbsp; Then I took</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">the rectified DC, ran it through the = =3D remaining inductor (no SR windings on</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">this one) and then to 500,000 mf. of =3D capacitance.&nbsp; This gave me 16.2 volts</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">output.&nbsp; Pathetic.&nbsp; I then = =3D desgned and built a TIP/transistor based voltage</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">regulator that holds the voltage at = =3D exactly 10.8 volts.&nbsp; Right where I want</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">it.</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">Current into a 1/4 ohm load is 40 =3D amperes which means i virtually</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">eliminated internal = resistance.&nbsp; =3D The voltage at 40 amperes?&nbsp; It remains</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">faithfully at 10.79.</FONT> </P>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">jon</FONT> </P> <BR> <BR>   <P><FONT SIZE=3D3D2 FACE=3D3D"Arial">DIYAPASON-L: a Discussion list for = =3D owners and builders of their own </FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">Residence Pipe Organs.</FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">HOMEPAGE : <A =3D HREF=3D3D"http://www.diyapason.pipechat.org" =3D TARGET=3D3D"_blank">http://www.diyapason.pipechat.org</A></FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">List: <A =3D HREF=3D3D"mailto:DIYAPASON-L@pipechat.org">mailto:DIYAPASON-L@pipechat.org= =3D </A></FONT> <BR><FONT SIZE=3D3D2 FACE=3D3D"Arial">Administration:&nbsp; <A =3D HREF=3D3D"mailto:owner-DIYAPASON@pipechat.org">mailto:owner-DIYAPASON@pipe= =3D chat.org</A></FONT> </P> </UL> </BODY> </HTML> ------_=3D_NextPart_001_01BF640C.00106D88--  
(back) Subject: Re: [Residence Organs] A question about something "different" From: <Pipewheezr@aol.com> Date: Fri, 21 Jan 2000 10:58:34 EST   Hi Craig, how about a train whistle. A friend had a shop where he would = show silent movies and use his Robert Morton for the music butttttt he had a = train whistle in the shop that he used for train seine's or quitting time. It = was powered by a shop compressor. No one could figure out how he did that, on = the organ.   Dennis  
(back) Subject: Re: [Residence Organs] A question about something "different" From: "George W. Jenista" <hiplain@flash.net> Date: Fri, 21 Jan 2000 11:57:00 -0600   Pipewheezr@aol.com wrote: > > Hi Craig, how about a train whistle.   Craig, I'll 2nd the motion for a train whistle...after all, where you are, you've got the real thing chugging by almost daily {the Tarantula Steam Train}!!