Sujet : Re: Designs of voltage/current controlled resistance
De : jl (at) *nospam* glen--canyon.com (john larkin)
Groupes : sci.electronics.designDate : 21. May 2025, 21:14:52
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <jlcs2klo3n105phhh39rp9u2ga16vka22t@4ax.com>
References : 1 2 3 4
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On Wed, 21 May 2025 16:03:54 -0400, "Edward Rawde"
<
invalid@invalid.invalid> wrote:
"John R Walliker" <jrwalliker@gmail.com> wrote in message news:100l974$2nno5$1@dont-email.me...
On 21/05/2025 17:26, Edward Rawde wrote:
"RodionGork" <rodiongork@github.com> wrote in message news:d469c760bbcd14a1f148c0e1b29653f7@www.novabbs.com...
Hi Friends!
>
What approaches exist of creating voltage or current-controlled
resistance?
>
Usually opto devices or FETs.
It has been recently demonstrated here that there are other approaches but it depends on what you're trying to achieve.
>
To be more specific, have a look at the H11F1 which is an LED
coupled with a bidirectional light sensitive FET. This has been
around for many decades but is still available.
John
>
>
Thanks. Interesting device, and LTSpice models exist.
>
Interesting, but that looks linear to maybe 20 millivolts.
Designs of voltage/current controlled resistance
Re: Designs of voltage/current controlled resistance