cathode follower vs source follower: some comparative plots

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roberto
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Joined: Tue Nov 27, 2007 4:45 pm
Location: Italy

cathode follower vs source follower: some comparative plots

Post by roberto »

Hi, has anyone ever tried something like the last circuit shown here?
http://milas.spb.ru/~kmg/irf_en.html
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roberto
Posts: 1841
Joined: Tue Nov 27, 2007 4:45 pm
Location: Italy

Re: cathode follower vs source follower: some comparative plots

Post by roberto »

[img:301:320]http://milas.spb.ru/~kmg/files/misc/irf/sf1.jpg[/img]

gives the following plot on the scope:
[img:800:600]http://milas.spb.ru/~kmg/files/misc/irf/5/5.jpg[/img]


That approximates quite good the CF results:
[img:800:600]http://milas.spb.ru/~kmg/files/misc/irf/t2/5.jpg[/img]


Compared to the simple mosfet substitution of the CF triode as we can see at mosfet follies:
[img:800:600]http://milas.spb.ru/~kmg/files/misc/irf/2/5.jpg[/img]
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pdf64
Posts: 2703
Joined: Sat Mar 12, 2011 9:23 pm
Location: Staffordshire, UK

Re: cathode follower vs source follower: some comparative plots

Post by pdf64 »

How interesting, thanks for raising the topic!
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surfsup
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Joined: Mon Nov 29, 2010 12:21 am
Location: Chicagoland

Re: cathode follower vs source follower: some comparative plots

Post by surfsup »

yes interesting indeed
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