#qi-hardware on 2017-07-24 — irc logs at freenode.irclog.whitequark.org

2015-04-02 04:38 kyak changed the topic of #qi-hardware to: Copyleft hardware - http://qi-hardware.com | hardware hackers join here to discuss Ben NanoNote, atben/atusb 802.15.4 wireless, anelok and other community driven hw projects | public logging at http://en.qi-hardware.com/irclogs and http://irclog.whitequark.org/qi-hardware

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03:54 <promach> https://easyeda.com/guest/Bob_Pease_s_High_Impedance_Active_Scope_Probe_simulations-gsmEyQ8qj bandwidth reduces with increasing source resistance ? I thought parallel RC network ends up with a pole at 1/RC ?

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06:54 <DocScrutinizer05> the text has it all, RTFM

06:56 <DocScrutinizer05> and your "question" makes as much sense to me as "water is wet? I thought cherries are sweet"

06:57 <DocScrutinizer05> see https://en.wikipedia.org/wiki/Ringing_(signal)

07:00 <DocScrutinizer05> and https://en.wikipedia.org/wiki/Impedance_matching

07:01 <DocScrutinizer05> https://en.wikipedia.org/wiki/File:Coaxial_transmission_line_wih_one_source_and_one_load.svg

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12:38 <promach> DocScrutinizer05：The problem is I have opposite when I do AC sweep

12:39 <promach> http://i.imgur.com/oMMCm5k.png this AC sweep result is from R10=10kohm

12:40 <promach> when I dropped the value of R10 to 10kohm, bandwidth decreases from 100MHz to 10MHz

12:42 <DocScrutinizer05> NFC what you're talking about

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