Main > Monitor/Video Forum
A66EHJ13x01 28" Tube compatible chassis
nonosto:
--- Quote from: grantspain on July 05, 2022, 05:20:17 am ---
--- Quote from: nonosto on July 05, 2022, 12:07:45 am ---one question, maybe dumb, can I use ms9 - 29 chassis with this tube please?
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no as the yoke specs are way different
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THX, I would like said yoke + chassi ms29 change. The tube's back is less deep than toshiba ms9-29's tube, it could be an issue?
lilshawn:
the yoke are different because the angle of the yoke deflection needed changed due to the tube shorter/longer... so a different yoke with the ability to deflect the beam properly was needed. so you can't just swap the yoke over.
nonosto:
hello I have this tube, is it compatible with Hantarex POLO Star 25/28 tri-freq, it's seems very closed to Videocolor/Thomson A66EHJ13X12.
THX
lilshawn:
a certain monitor colour picture tube may have the designation, M34AFA63X03 that can breakdown into 6 parts: M/34/AFA/63/X/03
Part 1: Application
Computer monitor tubes start with the letter "M" while for a TV picture tube, it start with “A", factory seconds "B" and so on down the line.
Part 2: Screen diagonal measure in centimeters (cm)
The “34" means the diagonal viewing measure is a minimum of 34cm which refers to 14" tube, 36cm is 15", 41cm is 17" and so on.
Part 3: Family code
The three letters “AFA" designate a family of tubes that have similar physical and electrical characteristic. These letters are assigned alphabetically beginning with “AAA", followed by “AAB",“AAC" etc. This would be things like voltages for the heater and the voltages required for the G1 and G2, the orientation/shape and/or configuration of the electron guns etc.
Part 4: Family number
The number 63 shows a specific tube within the family code.
A different number is assigned to tubes within the same family that have different neck diameters, for example a single digit would be a monochrome tube, but this two-digit number shows it is colour.
Part 5: Phosphor Type The fifth symbol gives the phosphor designation. The letter X here corresponds to P22 for colour picture tubes. Colour monitor tubes can have any other single letter (excluding I, O, or W) to designate other phosphor type for various applications. For monochrome pictures, the phosphor symbol is WW, corresponding to P4. Monochrome monitor tubes also can use WW or some other two-letter combination (excluding I and O).
Part 6: Integral neck components The sixth symbol is assigned only for tubes having integral neck components, such as the deflection yoke. The specs are only apply to a particular tube manufacturer. The primary consideration here is winding inductance. The yoke coils have different sensitivity i.e. deflection per Amp in both horizontal and vertical.
as long as most of the first 5 sections are pretty close, the tube will mostly be compatible.
nonosto:
thanks very much @lilshawn. If I have a good understanding in this case we have A66EHJ13X01 for thomson TV tube and A66EHJ13X12 for videocolor.
So compatible chassis, it's wonderful it's a very good tube and can make a very nice tri freq CRT.