- 80/5Y3/5Z3/5U4 Fullwave Rectifiers Tube Description and Replacement
- Magic Eye Tubes Information on Magic Eye tubes
- Replacing Magic Eye Tubes Information on Replacing Magic Eye tubes
- Magic Eye Tube Numbers Numbers for Magic Eye tubes
- RCA UY227 Information Data Sheet for RCA UY227 tube
- Common Cathode Dual Triodes Summary of common cathode dual triodes
- Tripple Triode Substitution - Replacing Tripple Triode Tubes
- What Are Grid Clips? Grid clips and microphonics suppression
- Burroughs Nixie Tube Info Burroughs Document on Nixie Tubes
- Burroughs B7971 Nixie Tube Info Burroughs B7971 Documents
- Burroughs B7971 Nixie Tube Schematic Burroughs B7971 Schematic
- 6SN7 History A long and rambling history of the 6SN7 and its successors
- Space Charge Tubes - Low Voltage Space Charge Tubes
- Battery Radio Tubes - Vacuum Tubes for Battery Radios
- Superior Model 820 Tube setup charts for Superior Model 820 tube tester
- Jackson Model 648R schematic Schematic for Jackson 648R tube tester
- Eico 666/667 Testers Buying, Restoring and Calibrating the Eico 666 Tube Tester
- Eico 666/667 Testing Testing Tubes Using the Eico 666 Tube Tester
- Transformer Color Codes Transformer Color Codes (power, audio, IF)
- Ballast Resistor Codes Code Information for Ballast Resistors
- How to Drive a 12.6V Heater From a 6.3V Supply Using a Voltage Doubler
Vacuum Tube Information from MDB Ventures
fullrect.txt
Bytes: 32420, Date: 2-Nov-07
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This file is a description of the common 80, 5Y3, 5Z3 and 5U4 type fullwave rectifier tubes. It also describes when and how you can substitute the tubes with other common varieties.
Keywords: FULLWAVE RECTIFIER TUBE
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meyea.jpg
Bytes: 442083, Date: 30-Nov-04
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This file is a one page ad for the Amphenol magic eye tube mounting assembles It includes a detailed description of the assemblies and example diagrams for wiring eye tubes into existing circuits.
Keywords: AMPHENOL MAGIC EYE TUBE ASSEMBLY
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eyeswap.txt
Bytes: 6560, Date: 1-Nov-07
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This is a short text file that describes how to replace certain magic eye tubes with other similar magic eye tubes.
Keywords: REPLACE MAGIC EYE TUBE
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eyetubes.txt
Bytes: 247, Date: 30-Nov-04
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This file contains a list of magic eye tube numbers.
Keywords: MAGIC EYE TUBE NUMBERS
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rca27a.jpg Data Sheet
Bytes: 139637, Date: 30-Nov-04
rca27b.jpg License
Bytes: 112532, Date: 30-Nov-04
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These two files are from a data sheet included in a RCA UY-227 globe tube box. The first is the data sheet for the tube. The second is the license agreement. Yes, you had to open the package to read the agreement. Sound familiar?
Keywords: RCA UY-227 GLOBE TUBE DATA
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cc2tri.txt Common Cathode Dual Triodes
Bytes: 2065, Date: 25-Jan-08
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This text file is a summary of the various common cathode dual triodes produced.
Keywords: COMMON CATHODE DUAL TRIODE
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tripple.txt Replacing Tripple Triode Tubes
Bytes: 4489, Date: 29-May-11
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This text file describes alternate solutions to replacing tripple triode tubes.
Keywords: TRIPPLE TRIODE TUBES 6C10 6K11 6Q11
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gridclip.txt Grid clips and microphonics suppression
Bytes: 2065, Date: 25-Jan-08
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This text file is a description of grid clips and how they supress microphonics.
Keywords: GRID CLIP CLIPS MICROPHONICS SUPRESSION
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bnixie.zip Burroughs Document on Nixie Tubes
Bytes: 4,422,046, Date: 2-Oct-08
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This is a zip file containing eight pages (JPG format) from a Burroughs document about their Nixie tubes including, data, characteristics and circuit designs.
Keywords: BURROUGHS NIXIE TUBE DATA
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b7971.zip Burroughs B7971 Documents
Bytes: 865,741, Date: 2-Oct-08
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This is a zip file containing four pages (JPG format) from Burroughs documents about their B7971 Nixie tubes.
Keywords: BURROUGHS B7971 NIXIE TUBE DATA
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b7971-brd.png Burroughs B7971 Circuit Schematic
Bytes: 150,839, Date: 28-Oct-09
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This is a png file containing the schematic of the stock quote circuit board. Sorry about the poor quality, it is all we have. It is a high resolution scan of a copy of a copy of a copy of a....
Keywords: BURROUGHS B7971 NIXIE TUBE BOARD SCHEMATIC
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hist6sn7.txt 6SN7 History
Bytes: 13,730, Date: 2-Oct-08
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This is a text file containing a long and rambling history of the 6SN7 and some of its successors as well as a side trip to design issues such as getters.
Keywords: 6SN7 TUBE HISTORY GETTERS
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spacecharge.txt Low Voltage Space Charge Tubes
Bytes: 10,644, Date: 30-Nov-08
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This is a text file containing a discussion about low voltage space charge tubes. Low voltage space charge tubes are tubes that can operate at "safe" voltages (30 volts or less).
Keywords: SPACE CHARGE LOW VOLTAGE TUBE HISTORY
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batradio.txt Battery Radio Vacuum Tubes
Bytes: 10,596, Date: 25-Jun-09
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This is a text file containing a discussion about tubes used in battery powered radios. A list of the common battery radio tubes is provided.
Keywords: BATTERY RADIO VACUUM TUBE
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Tube Tester Information from MDB Ventures
super820.zip
Bytes: 626265, Date: 30-Nov-04
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This is a zip file containing ten pages of tube setup charts for the Superior model 820 tube tester. It also includes a page describing how to use the crt test adapter with the model 820.
Keywords: SUPERIOR 820 TUBE TESTER CHARTS
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j648r.gif
Bytes: 541659, Date: 30-Nov-04
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This file contains the schematic for the Jackson model 648R Tube Tester.
Keywords: JACKSON 648 TUBE TESTER SCHEMATIC
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restr666.txt
Bytes: 27747, Date: 22-Feb-08
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This file contains information on buying, restoring and calibrating the Eico 666 and 667 Tube Testers.
Keywords: Eico 666 667 TUBE TESTER
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eicotesting.txt
Bytes: 21247, Date: 20-Feb-11
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This file contains information testing tubes with the Eico 666 and 667 Tube Testers.
Keywords: Eico 666 667 TUBE TESTER
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transformer.txt
Bytes: 874, Date: 2-JUL-07
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This file contains information on transformer wiring color codes.
Keywords: TRANSFORMER COLOR CODE
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ballast.txt
Bytes: 2630, Date: 2-JUL-07
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This file contains information on ballast resistor identifier codes.
Keywords: BALLAST RESISTOR TUBE CODE
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heaters.txt
Bytes: 4410, Date: 11-MAR-08
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This file contains information on how to build a voltage doubler to drive a 12.6V tube heater from a 6.3V filament supply.
Keywords: TUBE FILAMENT POWER SUPPLY DOUBLER
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Links: Go back to the TOP , MDB Ventures Home,
Email: MDB Ventures sales@mdbventures.com