F
Franc Zabkar
Guest
On Sun, 6 Jul 2003 11:12:11 +1000, "Phil Allison"
<philallison@optusnet.com.au> put finger to keyboard and composed:
then tell us how current can be evenly shared by two parallel diodes
with even a *slight* mismatch in the I-V curve.
Hint: dI/dV is *very* large.
- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
<philallison@optusnet.com.au> put finger to keyboard and composed:
Not at all. Look closely at the knee in the diode characteristic and"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news2fegvg89qc59b6034fgmb1ofefvjo5mpa@4ax.com...
On Sat, 5 Jul 2003 16:11:41 +1000, "Phil Allison"
philallison@optusnet.com.au> put finger to keyboard and composed:
70s Sansui means the famous AU series in the minds of eveyone
except you.
The last Sansui amp I remember repairing was an AU4900. I was
surprised to find that its designer had created a full wave bridge
using eight 1A rectifiers connected as four pairs of diodes in
parallel. He/she was apparently under the misconception that the
bridge could now handle 2A. I was shocked to see such a fundamental
error from a high end (?) brand name. Fittingly the fault was shorted
rectifier diodes. Needless to say I rebuilt the bridge with four 3A
versions.
** Paralleled power diodes work fine.
then tell us how current can be evenly shared by two parallel diodes
with even a *slight* mismatch in the I-V curve.
Hint: dI/dV is *very* large.
- Franc Zabkar
--
Please remove one 's' from my address when replying by email.