• If you have bought, sold or gained information from our Classifieds, please donate to Group DIY and give back.

    You can become a Supporting Member which comes with a decal or just click here to donate.

Power Tubes

shop deals on amazon
Shop deals on ebay
Advertise with us
GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
lukas

lukas

Well-known member
Joined
Sep 29, 2010
Messages
322
Location
Poland
Pair Kt66 GEC made in england, used but testet good. one have broken key 130euro/pair

Testing data:
Uf=6,3V
Ug1=-15V
Ua=250V
Ug2=250v

For a new tube: IA=85ma and mutual conductance "S" is 6mA/V.

testing results: / Ia / Ig2 / s
first tube / 73,6 / 5,64 / 5.6
second tube / 71,5 / 5.88 / 5.2

osram KT66 50euro.
testing results: / Ia / Ig2 / s
tube / 65,7 / 4,53 / 5.2
 

Attachments

  • Resize of IMG_20220122_204604.jpg
    Resize of IMG_20220122_204604.jpg
    126.8 KB · Views: 5
  • Resize of IMG_20220122_204618.jpg
    Resize of IMG_20220122_204618.jpg
    125.5 KB · Views: 4
  • Resize of IMG_20220122_204650.jpg
    Resize of IMG_20220122_204650.jpg
    115 KB · Views: 5
  • Resize of IMG_20220122_204519.jpg
    Resize of IMG_20220122_204519.jpg
    107.7 KB · Views: 5
  • Resize of IMG_20220122_204726.jpg
    Resize of IMG_20220122_204726.jpg
    145.3 KB · Views: 4
You must log in or register to reply here.

Latest posts

Back
Top