Fast zener diode substitute
in [Design]
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From: Jamie on 6 Feb 2010 18:02 Yvan wrote: > Nedavno Jamie napisa: > > >>Mouser has them. Most like you can get them in Axle leads, these are >>smt. > > > > I am in Serbia. I'd be paying more for taxes for the part than for the > new car battery :-( > > Well, I don't know who you have there for parts supplier.. Farnell maybe?, Newark? etc... Digikey? etc. Just look for TVS diodes.
From: John Larkin on 6 Feb 2010 17:43 On Sat, 06 Feb 2010 23:35:58 +0100, Yvan <killefitz(a)invalid.invalid> wrote: >Nedavno John Larkin napisa: > >> A zener is pretty much a zener. I've never heard of a FAST zener. Use >> any similarly-rated (voltage, power) zener. > >Other opinions? > >> I wonder if the circuit actually works, chemistry-wise. > > >I do not know, but I decided to try. I will also make this: > >http://home.comcast.net/~ddenhardt201263/desulfator/n_channel_schem.gif > >More info here: > >http://home.comcast.net/~ddenhardt201263/desulfator/lowpower.htm How will you know if they work or not? The pulsed desulphator sounds bogus to me. John
From: Fred Bartoli on 6 Feb 2010 17:48 Yvan a �crit : > Nedavno John Larkin napisa: > >> A zener is pretty much a zener. I've never heard of a FAST zener. Use >> any similarly-rated (voltage, power) zener. > > Other opinions? > Like John said you, just go for a similar power zener and you'll be OK. Also, as you app seems to be single pulse, and have a very low duty ratio, you can slow down the FET turn off quite a bit without any pb. You could probably reduce the over voltage to the point of not needing any clamp at all. >> I wonder if the circuit actually works, chemistry-wise. > > Ditto -- Thanks, Fred.
From: Yvan on 6 Feb 2010 17:50 Nedavno John Larkin napisa: > How will you know if they work or not? > The pulsed desulphator sounds bogus to me. I have two old, unused car bateries. I'll connect desulphator to it, and wait for a month to see if it works. -- ___ ____ /__/ / \ ** Registrovani korisnik Linuksa #291606 ** / / \/ /\ \ ** Registered Linux user #291606 ** /__/\____/--\__\ ** http://counter.li.org/ **
From: Yvan on 6 Feb 2010 17:52
Nedavno Jamie napisa: > Well, I don't know who you have there for parts supplier.. > Farnell maybe?, Newark? etc... > Digikey? etc. None of these. We have few parts supplier, I'll check if they have TVS diodes, thanks. -- ___ ____ /__/ / \ ** Registrovani korisnik Linuksa #291606 ** / / \/ /\ \ ** Registered Linux user #291606 ** /__/\____/--\__\ ** http://counter.li.org/ ** |