That's good, because I can't remember where I put my old tubes. My mind takes to where they WERE for 25 years but I moved a bunch of stuff a couple years ago. Russ Hoyt Hoyt's TV Exeter, NH ----- Original Message ----- From: "Old TV Man" <mebonnell@xxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Tuesday, June 28, 2005 9:30 PM Subject: [TechAssist] Re: Antique tube # 80 or 5X3 > Thanks to everyone who helped on this. > I found a #80 tube. > > Max Bonnell > Bonnell TV > Robinson, IL > > Sender: techassist-bounce@xxxxxxxxxxxxx From: > mebonnell@xxxxxxxxx(Old=A0TV=A0Man) Date: Tue, Jun 28, 2005, 6:32pm To: > techassist@xxxxxxxxxxxxx Subject: [TechAssist] R: Antique tube # 80 or > 5X3 Reply=A0to: techassist@xxxxxxxxxxxxx > > Thanks Jim. NTE 125 is 1000 PRV-2.5 amps. I have an old NRI schematic > (Crosley) that shows the 2 large pins as filaments and the 2 small pins > as plates. Shows B+ as 280 volts. So where you say plate to cathode I > would think the neg side would go to the filaments and cathode to the > plates. > I agree about the authenic look. > > Max Bonnell > Bonnell TV > Robinson, IL > > Sender: techassist-bounce@xxxxxxxxxxxxx From: becyn@xxxxxxxxxx(becyn) > Date: Tue, Jun 28, 2005, 6:58pm (CDT+1) To: techassist@xxxxxxxxxxxxx > Subject: [TechAssist] Re: Antique tube # 80 or 5X3 Reply=3DA0to: > techassist@xxxxxxxxxxxxx > > Hi Max, > I don't know the specs for the NTE 125, but in an application like that, > use TWO diodes good for 1 amp or better at 1000PIV in series from each > plate to cathode and it will work fine. Some of those old sets had very > high B+, up to 550V . > > To keep the authentic look, I'd leave the old tube in it's socket and > wire the > diodes under the chassis. Since these oldies didn't believe in fuses, I > like to add > 500ma pico fuses to protect the transformer against a dead shorted > rectifier diode. > > Jim McVey > McVey Alltronix > 327 Broadway > Newburgh N.Y. 12550 > "If it doesn't play... > CALL MCVEY !!!!!!" > Factory authorized > service for over 20 > major brands. > 845 561 8383 > (Last of the Mohegans) > > Old TV Man wrote: > > I have an old crosley radio that uses a #80 tube as a rectifier. Since I > can't find one is it possible I could take a 4 pin socket and make a > rectifier with some NTE 125's. > Maybe some of you educated engineers can help on this. > > Max Bonnell > Bonnell TV > Robinson, IL > ---------------------------------------------- > ---------------------------------------------- > > ----------------------------------------------------------------------------- > This Email List is Public. Remove: http://www.tech-assist.org/remove.htm > Set Vacation > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation > Lost Password: http://www.tech-assist.org and select "Login Problems?". > Email Archives: //www.freelists.org/archives/techassist/ > ----------------------------------------------------------------------------- This Email List is Public. Remove: http://www.tech-assist.org/remove.htm Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/