Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Sep Thu 21, 2017 4:40 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 1 post ] 
Author Message
 Post subject: Metrix 310B valve tester
PostPosted: Jan Sun 15, 2017 11:04 pm 
New Member

Joined: Oct Sat 17, 2015 7:40 am
Posts: 7
Does anyone have a Metrix 310B or other Metrix valve tester???

I have 'acquired' one .... made in France ..... all Manuals that I have found so far are the wrong model, written in French and with blurry circuit diagrams. I have translated this Manual via Google translator, but the result is somewhat disappointing. I knew I should have been more attentive in French classes ....... but her accent was sooooo distracting ...... Smile Smile

From the Manual, this Tester seems to be a mutual conductance tester. Okay .... so on the Grid I expected to see a small AC signal riding on a negative DC bias. Nuh, only an ACvoltage which can be varied up to 50 volts, no DC bias .......and from my exploring so far, I cannot see how a negative DC bias could be applied to the Grid ....... Yet ...... the Selector switch on front panel states "Neg Grid voltage".

Either I am doing something wrong, or it's broken, or I don't properly understand how this thing is supposed to work or ??????

So before I go 'blinder' by trying to trace out all the connections, I am hoping that some-one has an English translation of the Manual, or clear circuit diagram, or can explain how it is supposed to work ..... anyone????
Cheers,
Ian


Top
 Profile  
 
Post New Topic Post Reply  [ 1 post ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Lou deGonzague and 10 guests



Search for:
Jump to:  


















Privacy Policy :: Powered by phpBB