Re: [CAD_CAM_EDM_DRO] Not-so-off-topic: rectifiers

Hi, well i like to keep the voltage rating high for the actual working
voltage. it gives the bridge a chance to fight of the spikes that sometimes
come down the line. I fixed computer power supplies and monitors for most of
6 years and i find the 400 volt or less rated rectifier are the most
frequent failures especially if the current rating is only one amp above
actual drawn current.
So, 120 volt 4 amps load i would use a 600 to 900 volt package and 6 amps
minimum but even better to go for 8 amps. The square ones require a good
heat sink and so it wont hurt to use the higher voltage/amperage package. I
use 1000 volt 8 amp rectifiers for monitors whose average draw is 4 amps.
cul brian F.

----- Original Message -----
From: "Randy Gordon-Gilmore" <zephyrus@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, July 10, 2001 2:02 AM
Subject: [CAD_CAM_EDM_DRO] Not-so-off-topic: rectifiers


> When spec'ing a bridge rectifier for a linear power supply (say, using a
> 24V 10A transformer) is there any harm in using an over-spec'd one? Any
> benefit? Prices for the square kind seem pretty flat from, say, 15A 50V
to
> 50A 400V...
>
> Best regards,
>
> Randy
>
> Randy Gordon-Gilmore ,----.___________ ______________ _________________
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