Re: using mosfets as rectifiers?

From: Jan Panteltje (pNaonStpealmtje_at_yahoo.com)
Date: 06/07/04 

Date: Mon, 07 Jun 2004 14:14:49 GMT

On a sunny day (Sun, 06 Jun 2004 22:28:43 -0400) it happened Albert
<pass@pass.com> wrote in <mbk7c0dga3981f5rmd347r1kjve4av44vh@4ax.com>:

>Can I use small signal mosfets to rectify the signal instead of the
>schottky diode? This would gain my half a volt because the mosfet
>would have very low voltage drop once it turns on.
How about a germanium diode?

>Would it be ok to bias the gate positive all the time (with a small
>button cell 3 volt battery) and just treat the mosfet like it was a
>diode??
If you are goin to use a small battery, why not use a small opamp!
CMOS opamp at 3V should take little power.
perhaps you could take power from the laptop par port?
JP

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