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Valve Tester - Orange Amps
https://orangeamps.com/products/accessories/amplifier-management/valve-tester/
Orange Amps developed the world’s first fully automatic, portable, digital Valve Tester, to make it easy to test amp valves. Until now testing valves with little or no knowledge of valve theory was difficult, expensive and often unreliable. This …
An inexpensive, easy to build diy valve tester
https://valveheaven.com/wp-content/uploads/2015/03/An-inexpensive-easy-to-build-diy-valve-tester.pdf
Attempting a valve tester design is quite a challenge ‐ it is very easy for a design to become very complex ‐ more difficult to build, and difficult to use. ... be built using the simplified schematic if it is only going to be used for testing typical audio valves like 6V6, 6L6, EL34, EL84, 12AX7 etc. ...
Valve Tester - The Valve Wizard
http://www.valvewizard.co.uk/valvetester.html
The Test Tube will measure the amplification factor (mu) and transconductance (gm) of most popular dual triodes, including: ECC81 / 12AT7 ECC82 / 12AU7 ECC83 / 12AX7 ECC85 / 6AQ8 ECC88 / 6DJ8 12AY7 12AV7 12DW7 6N2P... (You could of course adapt the circuit by adding other sockets or switches to allow other valve types to be tested.)
A low cost, easy to build diy valve/tube tester | Valve Heaven
https://valveheaven.com/2015/03/an-inexpensive-easy-to-build-diy-valvetube-tester/
A valve tester is an invaluable tool for those who wish to build and repair valve amplifiers. Old vintage valve testers are available online, but most of them provide only a crude “go/no-go” result. They also fetch ridiculous prices for such simple tests. What is really needed is a tester that will measure a valve at true operating conditions.
My Take on a DIY Valve tester - diyAudio
https://www.diyaudio.com/community/threads/my-take-on-a-diy-valve-tester.289518/
the ht transformer was a standard industrial isolation transformer 230v -230v 50va. if you have a transformer with a secondary of 300v with a few tweaks you could build a tester with a output of 400v dc. all voltages are totally adjustable. you could of course use digital meters this would save you building the op amp ac millivoltmeter and even …
How to TEST VACUUM TUBES - with the Orange Valve …
https://www.youtube.com/watch?v=P2gKLp8y1y0
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Amazon.com: tube tester
https://www.amazon.com/tube-tester/s?k=tube+tester
PYLE-PRO Plug 13 in 1 Pro Audio Tester Music Instrument/Studio Equipment Cable Connector Continuity Checker/Line Finder/Wire Tracker W/Battery, Led Light, Pyle (PCT60) 4.5 out of 5 stars 193. $47.13 $ 47. 13. Get it as soon as Thu, Feb 10. FREE Shipping by Amazon.
test forum – Audiovalve
https://www.audiovalve.info/test-forum/
Mr. Helmut Becker ( CEO ) Email: [email protected] VAT.ID.: DE264930259 WEEE-Reg.Nr.: DE94240676 EORI – Zollnr. DE 5831563
Vintage Audio Valves
https://vintageaudiovalves.com/
These ECC803 Double Triode pair of valves comes with a Cool Damper pre fitted which offers a more controlled and deeper bass, a more open and detailed sound stage, and crisper and greater dynamic range. All EAT Cool Valve ECC803S's are required to pass through rigorous testing to meet EAT's high standards.
Audiovalve – tube amps since 1982
https://www.audiovalve.info/
It is a dual-mono design, and delivers up to 12 watts per channel of OTL Class A tube power, has multiple inputs (balanced, singe-ended, and even a MM phono preamp built in) has front-panel gain control and a balance control. It also has pre-outs in case you'd like to use it as a preamp for external amplification.
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