New Dummy Tube Tester

Description

"Dummy" tube tester [Quick Check] operating instructions
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Operation:
1. Plug-in 12V/2A DC power supply
2. Turn [Power] switch to "On"(Up) position
3. With the LED meters light up, the tester is ready for operation
"Dummy" is designed to test dual triode tubes common in today's audio amplifiers , such as 12AX7, 12AU7, 12AT7,5751,ECC81,ECC82,ECC83,12BH7,6DJ8,6CG7&6H30
Quick Check:
1. Turn[Section] switch to "1" position, to test trioe No.1 of dual triode tube
2. Refer to table for data on tube to be tested
3. Set filament(12V or 6V), Plate Voltage( Vp / 180V or 90V) to given settings
4. Turn the [Bias] fully counterclockwise and insert tube in socket
5. Waiting a minute to warm up tube
6. Turn [Bias] slowly clockwise , observing the grid bias voltage (Vg) until it matched to [Quick Check Standard] value.
For example, Tube 5751 Vp=180V / Vg= -1.5V
7. Refer to [Quick Check Standard] table, compare the Plate current( Ip) value with tube to be tested. For example,
The 5751 tube to be tested : Ip = 1.38mA ; The standard value : Ip = 1.67mA,
Condition = (1.38mA/1.67mA) X 100% = 82.6%
8. Turn [Section] switch to position "2", repeat process 2 to 7 for testing triode No.2
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Introduction:
A compact, accurate tube tester for everyone easy to use.
Made In Taiwan!
Testable tube types
Base : 9A ; 12AX7,12AT7,12AU7,12BH7,ECC81,ECC82,ECC83,6DJ8,6H30..
Octal :
6SL7,6SN7,12SL7,12SN7,12SX7...
Plate Voltage & Current ; DC 90V or 180V / 20mA(max.)
Filament Voltage & Current ; DC 12V or 6.3V / 1.5A(max.)
AC input ; AC 100V~240V
Size ; 110mm X 110mm X 95mm
Weight ; 0.6Kg
Thanks for all and wish you a nice day!
Dummy Tube Tester User Group
https://www.facebook.com/Dummy-Tube-Tester-User-Group-1804152399665939