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2 Posts authored by: ajcc
With my last function generator related blog being such a success I wanted to open up the TTi TG210 function generator it's replacing on my bench and have a look inside to see how it works. Judging from the date codes I found inside the unit it's from early 97, making it only a year older than the HP. The technology used inside isn't anything new for 1997, it's actually surprisingly old school and very analog in a rather beautiful way.   The simple 2 MHz function generator in it's plasti ...
Background story A while back I was lucky enough to stumble upon a poor HP 33120A hiding in the e-waste from a lab that was being cleared out. It had a strip of masking tape covering the display telling everyone that the unit was not working, at all! So I asked them about it and just got the answer that it was 30 years old and not worth repairing. I protested that they couldn't just be throwing away nice HP gear, at least they could try to repair it? "Take it if you want it!", they told me and l ...

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