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Need Info on 1 inch CRT
I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know.
Haven't been able to find anything. The wearable computer sites may be a possibility, but I didn't see any leads so far. I want to use it for a portable DF system. The number is unreadable. It has yellow ink printing not etched. What could be the manufacturer: an "N" followed by what looks like a backwards somewhat stylized "B" What there is of a number looks like R2 then possibly a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4 ohms cold. about 1" dia & 2" long. How about some ideas??? -- Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course. |
Steve Nosko wrote:
I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know. Haven't been able to find anything. The wearable computer sites may be a possibility, but I didn't see any leads so far. I want to use it for a portable DF system. The number is unreadable. It has yellow ink printing not etched. What could be the manufacturer: an "N" followed by what looks like a backwards somewhat stylized "B" What there is of a number looks like R2 then possibly a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4 ohms cold. about 1" dia & 2" long. How about some ideas??? -- Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course. If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
Steve Nosko wrote:
I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know. Haven't been able to find anything. The wearable computer sites may be a possibility, but I didn't see any leads so far. I want to use it for a portable DF system. The number is unreadable. It has yellow ink printing not etched. What could be the manufacturer: an "N" followed by what looks like a backwards somewhat stylized "B" What there is of a number looks like R2 then possibly a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4 ohms cold. about 1" dia & 2" long. How about some ideas??? -- Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course. If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
P.S. Do the camcorders really use magnetic deflection???
Steve "Steve Nosko" wrote in message ... Don't think a pix will help much. It has what looks like the dark grey aquadag coating making any internal observations impossible. My sacnner out of commission, but there's one at work. I should try to see if I can get a good rendition of the printing though. Thanks. Steve "Michael A. Terrell" wrote in message ... Steve Nosko wrote: I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know. Haven't been able to find anything. The wearable computer sites may be a possibility, but I didn't see any leads so far. I want to use it for a portable DF system. The number is unreadable. It has yellow ink printing not etched. What could be the manufacturer: an "N" followed by what looks like a backwards somewhat stylized "B" What there is of a number looks like R2 then possibly a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4 ohms cold. about 1" dia & 2" long. How about some ideas??? -- Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course. If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
P.S. Do the camcorders really use magnetic deflection???
Steve "Steve Nosko" wrote in message ... Don't think a pix will help much. It has what looks like the dark grey aquadag coating making any internal observations impossible. My sacnner out of commission, but there's one at work. I should try to see if I can get a good rendition of the printing though. Thanks. Steve "Michael A. Terrell" wrote in message ... Steve Nosko wrote: I have a 3/4 or perhaps 1" CRT. Possibly from a camcorder, don't know. Haven't been able to find anything. The wearable computer sites may be a possibility, but I didn't see any leads so far. I want to use it for a portable DF system. The number is unreadable. It has yellow ink printing not etched. What could be the manufacturer: an "N" followed by what looks like a backwards somewhat stylized "B" What there is of a number looks like R2 then possibly a 1 and most likely a 5. So it sort-of looks like R215, but much of the ink is gone. Standard 9 pin. Pins 4-5 must be the filament since they show 4 ohms cold. about 1" dia & 2" long. How about some ideas??? -- Steve N, K,9,d, c. i at arrl net will reach me, no commas, of course. If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
Steve Nosko wrote:
P.S. Do the camcorders really use magnetic deflection??? Steve I have a Sanyo laying here, apart, and it does. I am trying to find the lens control circuits so I can mount a small CCD camera to it, and use it to magnify what I am working on. The CRT has a seven pin base, and a second anode connector on the side of the bell. Your CRT would need four more terminals for electrostatic deflection, and four output transistors to drive it. Since the tubes are small, and run at fixed sweep frequencies, using magnetic deflection makes more sense. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
Steve Nosko wrote:
P.S. Do the camcorders really use magnetic deflection??? Steve I have a Sanyo laying here, apart, and it does. I am trying to find the lens control circuits so I can mount a small CCD camera to it, and use it to magnify what I am working on. The CRT has a seven pin base, and a second anode connector on the side of the bell. Your CRT would need four more terminals for electrostatic deflection, and four output transistors to drive it. Since the tubes are small, and run at fixed sweep frequencies, using magnetic deflection makes more sense. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida |
"Michael A. Terrell" wrote in message ... If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida Many early systems used separate cameras and a suitcase VCR. My RCA camera had a removable viewfinder which used a minature CRT with a yoke. Pete |
"Michael A. Terrell" wrote in message ... If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida Many early systems used separate cameras and a suitcase VCR. My RCA camera had a removable viewfinder which used a minature CRT with a yoke. Pete |
The 913 is a 1" electrostatic CRT. It looks like a metal 6L6 with a glass end, IIRC. (running an hiding to avoid flames) |
The 913 is a 1" electrostatic CRT. It looks like a metal 6L6 with a glass end, IIRC. (running an hiding to avoid flames) |
OK This is an all glass, flat-end envelope. Not much larger than a 50C5,
but a bit larger. Coated, can't see inside. Yikes! they actually used magnetic deflection. I was hoping for electrostatic, but with 9 pins that may be difficult. Been too long to remember how many electrodes are needed for grid, focus & any more anodes. Leseee. 2 fil 1-cathode. 4- dif plates 1-focus 1- accel anode That's 9......maybe you need more...Oops, forgot the grid. Make the cathode common with one of the filament lines or make it directly heated.......Oh well. If it needs coils it'll make a nice conversation piece. 73, Steve " Uncle Peter" wrote in message news:4hWLb.29705$WQ3.6987@lakeread05... "Michael A. Terrell" wrote in message ... If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida Many early systems used separate cameras and a suitcase VCR. My RCA camera had a removable viewfinder which used a minature CRT with a yoke. Pete |
OK This is an all glass, flat-end envelope. Not much larger than a 50C5,
but a bit larger. Coated, can't see inside. Yikes! they actually used magnetic deflection. I was hoping for electrostatic, but with 9 pins that may be difficult. Been too long to remember how many electrodes are needed for grid, focus & any more anodes. Leseee. 2 fil 1-cathode. 4- dif plates 1-focus 1- accel anode That's 9......maybe you need more...Oops, forgot the grid. Make the cathode common with one of the filament lines or make it directly heated.......Oh well. If it needs coils it'll make a nice conversation piece. 73, Steve " Uncle Peter" wrote in message news:4hWLb.29705$WQ3.6987@lakeread05... "Michael A. Terrell" wrote in message ... If it is from a camcorder, it should have a deflection yoke. How about some pictures? It might trigger someone to recognize it. Suitable newsgroups a news:alt.binaries.schematics.electronic news:alt.binaries.pictures.radio Also, you can lay small parts on a flatbed scanner, cover them with a sheet of white paper, and put a light over the paper to reduce shadows. Yo can get good close-ups this way. I usually scan at 600 DPI, and reduce image size to what I want. I would post a picture, an ask the guys on news:sci.electronics.repair if anyone there can identify it. -- We now return you to our normally scheduled programming. Take a look at this little cutie! ;-) http://home.earthlink.net/~mike.terrell/photos.html Michael A. Terrell Central Florida Many early systems used separate cameras and a suitcase VCR. My RCA camera had a removable viewfinder which used a minature CRT with a yoke. Pete |
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