The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Robert Baer
X-Mailer: Mozilla 4.75 [en] (Win98; U)
Subject: Re: Lowest voltage drop diode
Date: Wed, 25 Sep 2002 07:22:51 GMT
NNTP-Posting-Date: Wed, 25 Sep 2002 00:22:51 PDT
Organization: EarthLink Inc. -- http://www.EarthLink.net
Ben Bradley wrote:
> In sci.electronics.design, email@example.com (oguz) wrote:
> >I am looking for a very low voltage drop diode ( or equivalent circuit
> >) that has a forward voltage drop of 0.2 Volts or less. Maximum
> >current to be conducted will be less than 5mA.
> >Currently, I am using a BAT85 Schottky diode from Philips. This has a
> >forward voltage drop of 0.3-0.4 Volts maximum. I have looked at some
> >Germanium diodes that have a drop of 0.3 Volts.
> >Is there a way to do this with a MOSFET or Transistor ?
> A mosfet, yes. Search for syncronous rectifier.
> >Is a one-way conducting device of 0.2 Volt drop or less achievable by
> >any means ?
> >Oguz Murtezaoglu
> >BiPOM Electronics
Problem with that "solution" is that one needs a large voltage gate
drive that is timed exactly when one wants the FET to be *on*; hence the
name "syncronous rectifier".
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup