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Details about  Oscilloscope CRT NOS 5LO38I Never Used ScopeClock Tube

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Oscilloscope CRT NOS 5LO38I Never Used ScopeClock Tube
Item Ended
Item condition:
New: Never Used

New Old Stock, Never used, sealed in original box with original datasheet (russian)

06 Sep, 2014 17:50:41 AEST
Starting bid:
AU $30.00
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Item location:
West Pennant Hills, NSW, Australia


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Item specifics

Condition: New: Never Used : Split the cost with friends
A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with defects. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab
Seller Notes: New Old Stock, Never used, sealed in original box with original datasheet (russian)
For sale is a Vintage NOS 2 inch Oscilloscope CRT. Never used and can test before shipping. Includes original datasheet (Russian) Great for a ScopeClock!


Screen diamater: 2" (52mm)
Length 160mm
11 Pin Base
Heater Voltage 6.3v 270-330ma (5.7volts to 6.9volts)
Focus Voltage 138-300 volts (max 550volts)
Anode Voltage 1000volts (500 - 1100volts)
Grid voltage -30 to -90volts
X deflection - .09-.14mm/Volt
Y deflection - .11 - .16mm/Volt

I have just finished bench testing a prototype Power supply + Deflection board for these CRT's (Not included). A small run of these SMPS boards will be available for purchase over the next few weeks. This board operates from 12vdc (400ma) and will provide 700-1300vdc, adjustable focus voltage, adjustable brightness voltage, astigmatism control, Z modulation and X+Y deflection (0.6v Peak to Peak full deflection - can be attenuated) This will form the base for the BennVenn ScopeClock. Add a BennVenn ScopeClock controller (available soon) and you'll have yourself a complete kit at a fraction of the cost of other sellers. Or add a timebase and trigger circuit and build a cute little oscilloscope!

Update: I've sourced 2.45mm tube socket pins which fit securely to the base. Contact me if you would like me to CNC a small wood or perspex tube socket for a few extra dollars. 11pin sockets are hard to find and not cheap when you do, not to mention a varnished pine CRT socket would look awesome!

Voltage measurements on the tube when the picture was taken were: Anode=770v, Focus=105v, Grid=-90v, Heater=5.8vRMS, Deflection Plates were tied to the Anode. This tube will focus to an incredibly small point, idea for vector based games.

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