So then the tube was used as a photodetector with a small crt scanning the slides in order to electrically generate a test pattern to insert into a tvs circuitry for testing and alignment. Clever! Now all done with an IC. But it is possible that the tube may be of considerable value now if it is a photomultiplier. Jerry Silverman Greentron Inc 4 Newland Ave Greenville SC 29609 864 232 3889 Fax 271 2080 mailto:greentron@xxxxxxx ----- Original Message ----- From: "Hoyt's TV" <hoytstv@xxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Saturday, May 01, 2004 9:02 AM Subject: [TechAssist] Re: Any info on this old tube/ additional info > I used one of those B&K 1077s back in 1970. I kind of remember it having > several slides you could insert to get test patterns. Don't remember much > more though. Didn't use it but a couple times. > > Russ Hoyt > Hoyt's TV > Exeter, NH > > > ----- Original Message ----- > From: <greentron@xxxxxxx> > To: <techassist@xxxxxxxxxxxxx> > Cc: "Paul Medvetz" <paulcho@xxxxxxxx>; <techassist@xxxxxxxxxxxxx> > Sent: Friday, April 30, 2004 11:11 PM > Subject: [TechAssist] Re: Any info on this old tube/ additional info > > > > What sort of analyzer test was that used for? I used to use > photomultiplier tubes in nuclear radiation monitors. The radiation would > cause flashes of light when captured in a transparent crystal material. The > photons would cause electrons to be emitted from the cathode in the tube. > The electrons would be accellerated to an anode. When they struck the anode > a shower of electrons would be emitted. These would be accellerated to the > next anode which was at a higher voltage, > > and etc.. It took 800 to 1200 volts to make the tube work. The various > anodes and the cathode were connected to taps on a voltage divider. The gain > of the tube was adjusted by adjusting the high voltage. The current from > the last anode would go to a milliampmeter or to a pulse amplitude analyzer. > They are still used for this purpose as they are more sensitive than solid > state devices. The Harshaw Chemical Co. of Cleveland Ohio used to make them > and kept large numbers of them on burn-in. The ones that exhibited good > stability at high gain over a long period of time brought very high prices. > > J Silverman > > > > > > > They call it a photo-multiplier tube it picks up a flying dot of= > > > > > > light from the crt which produces an output signal that is > > > proportional to the amount of light which strikes it.That number= > > > that > > > I posted yesterday isn't the actual number its B&K's part= > > > number,I > > > have the diagram of the tube if you need it.It also has no= > > > heater. > > > > > > Tv-Service-Company > > > RR 3 Box 3550 > > > Hazleton,Pa.18202 > > > > > > > > > On Fri, 30 Apr 2004 12:23:56 -0400, J Silverman wrote: > > > >Photo tube? Do mean a "magic eye" tube that was used for beat > > > >frequency and > > > >null detection? > > > >Jerry Silverman > > > >Greentron Inc > > > >4 Newland Ave > > > >Greenville SC 29609 > > > >864 232 3889 > > > >Fax 271 2080 > > > >mailto:greentron@xxxxxxx > > > >----- Original Message ----- > > > >From: "Paul Medvetz" <paulcho@xxxxxxxx> > > > >To: <techassist@xxxxxxxxxxxxx> > > > >Sent: Friday, April 30, 2004 6:47 AM > > > >Subject: [TechAssist] Re: Any info on this old tube/ additional= > > > info > > > > > > > > > > > >>I have a old B&K model 1077 analyst that uses the tube that= > > > you=3D > > > >>are > > > >>describing it is the photo tube part # 231- 001-9-001 And it=3D > > > >>does > > > >>have 11 pins. > > > >> > > > >>Tv-Service-Company > > > >>RR 3 Box 3550 > > > >>Hazleton,Pa.18202 > > > >> > > > >> > > > >>On Thu, 29 Apr 2004 18:42:46 -0500, VM wrote: > > > >>>I can't find any tubes with 11 pins in my antique tube= > > > manual,=3D > > > >>only > > > >>>7, 8, > > > >>>9,10 & 12 pins. (Some have a Plate Cap on top, of course)= > > > Could=3D > > > >>you > > > >>>have > > > >>>miscounted the pins? > > > >>> > > > >>>Vernon Mosley <vlm@xxxxxxxxxxxxxxxxxx > > > >>>Mosley TV Service > > > >>>Success, MO 65570 > > > >>>----- Original Message ----- > > > >>>From: <Royal19960@xxxxxxx> > > > >>>To: <techassist@xxxxxxxxxxxxx> > > > >>>Sent: Wednesday, April 28, 2004 1:41 PM > > > >>>Subject: [TechAssist] Any info on this old tube/ additional=3D > > > >>info > > > >>> > > > >>> > > > >>>>Hi all, Thanks for all the responces and here is all the info= > > > I=3D > > > >>can > > > >>>supply. > > > >>>>Tube number is in a Sylvania box with a number os 13-27681-4 > > > >>>>Size is like a 6sn7 > > > >>>>Bakelite base with a key > > > >>>>Has 11 pins > > > >>>>made in 1968 > > > >>>>The words "red"" blue" are stamped on the base > > > >>>>There is a visable grid on one side of the tube. > > > >>>>Thats all I can offer in info. Thanks in advance > > > >>>>Roy > > > >>>>Roy Adams > > > >>>>Bonded TV Service > > > >>>>5158 W Forest Home Ave > > > >>>>Milwaukee, WI 53219 > > > >>>>414-541-9111 > > > >>>>www.Bondedtv.com > > > >>>>we have thousands of tubes on the site > > > >>>>Webhosting from only 4.95 a month at Bondedhost.com > > > >>>> > > > >>>> > > > >>>> > > > >>>>-------------------------------------------------------------= > > > --=3D > > > >>----- > > > >>>>------ > > > >>>--- > > > >>>>Lost Password: > > > >>>>http://www.tech-assist.org and select "Login Problems?". > > > >>>>Email Archives: > > > >>>>//www.freelists.org/archives/techassist/ > > > >>>> > > > >>>> > > > >>> > > > >>> > > > >>>--------------------------------------------------------------= > > > --=3D > > > >>----- > > > >>>-------- > > > >>>Lost Password: > > > >>>http://www.tech-assist.org and select "Login Problems?". > > > >>>Email Archives: > > > >>>//www.freelists.org/archives/techassist/ > > > >> > > > >> > > > >> > > > >> > > > >> > > > >>---------------------------------------------------------------= > > > ----- > > > >>------ > > > >--- > > > >>Lost Password: > > > >>http://www.tech-assist.org and select "Login Problems?". > > > >>Email Archives: > > > >>//www.freelists.org/archives/techassist/ > > > > > > > > > > > >----------------------------------------------------------------= > > > ----- > > > >-------- > > > >Lost Password: > > > >http://www.tech-assist.org and select "Login Problems?". > > > >Email Archives: > > > >//www.freelists.org/archives/techassist/ > > > > > > > > > > > > > > > > > > > -------------------------------------------------------------------------- > --- > > > Lost Password: > > > http://www.tech-assist.org and select "Login Problems?". > > > Email Archives: > > > //www.freelists.org/archives/techassist/ > > > > -------------------------------------------------------------------------- > --- > > Lost Password: > > http://www.tech-assist.org and select "Login Problems?". > > Email Archives: > > //www.freelists.org/archives/techassist/ > > > > > > -------------------------------------------------------------------------- --- > Lost Password: > http://www.tech-assist.org and select "Login Problems?". > Email Archives: > //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". 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