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Those modify the set to keep from blowing the SG608/SG613 - they don't show how to modify the set to use a bipolar transistor output.
Apparently, the February 1987 issue (page 252) of Television magazine (a UK publication aimed at TV repair engineers) has the modification. I found a 2007 posting referring to the article, but no article. I have several issues, bought when I was in England in 1987/1988, but my earliest is October 1987. I bought them as a novelty - each issue had a freebie taped to the cover, from wire ties to a resistor color code decoder, and one even had a silicon diode assortment, all BAT-series stuff.
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Brian
USN RET (Avionics / Cal)
CET- Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
Last edited by Findm-Keepm; 10-16-2015 at 06:44 PM.
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