looking for someone who has magazines HAM RADIO or 73 magazi

[craig-1]

dear nuts and volts readers, back in the 1970's i think it was 73 magazine had a article THAT WAS A COMPONETIC TESTER THAT WAS ABLE TO TEST COMPONETICS USING A TWO PHASE NETWORK AND WAS HOOKED UP TO YOUR OSCILLSCOPE. FROM WHAT I REMBER A SIGNWAVE VOLTAGE CAME OFF A TRANSFORMER AND WHENT THROUGH A PHASE SHIFT NETWORK THAT WAS 90* OUT OF PHASE. ONE LEG WENT TO THE COMPONETIC AND THE OTHER WANT TO THE OTHER SIDE OF THE COMPONETIC, AND WAS DESPLAYED ON A OSCILLOSCOPE. IT WAS BUILT INTO OF ALL THINGS A INDEX CARD FILE HOLDER 3 x 5 TYPE. i DON'T REMBER THE YEAR BUT I THINK IT WAS IN 1970'S AND I THINK IT WAS IN 73 MAGAZINE. THE AUTHOR DID NOT PUBLISHED HIS NAME BUT ONLY HIS CALL LETTERS. ANY HELP WILL BE GREATFULLY APPREATED
CRAIG

[k7elp60]

I think the circuit you are looking for was called an octopus.
Here is a link to one I found on google.
http://octopus.freeyellow.com/octopus.html
P.S. You will probably have copy and paste it.

[jollyrgr]

Are you thinking of the schematic/tester where the semiconductor being tested is hooked to a transformer and then the voltages are read off the scope such that a "curve trace" type plot is formed? The transistor base is driven by a DC supply which then changes the "DC offset" of the AC signal.

[cato]

First, try checking with your local library. They can probably help you find the article and get a copy for a photocopy charge.

If that doesn't work, the ARRL has and archive of Ham Radio:

http://www.arrl.org/members-only/qqnsearch.html

If THAT doesn't work, and you still have the authors call sign, you can probably use that to track him down....if he's still with us.

[cato]

Using Component tester as a keyword search, The ARRL Database turned up this:


ARRL Periodicals Index Search
Items 1 to 1 of 1
Issue Page Title Author
Feb 1987 Ham Radio 65 Testing Components
(Practically Speaking) Carr, Joe, K4IPV

[craig-1]

I found it in 73 magazine November 1971

[Bob Scott]

I remember one model being sold as the "Huntron Tracker".

http://www.huntron.com/products/benchto ... er2700.htm

Bob

[GoingFastTurningLeft]

componetics and signwaves.... holy crap