Re: [Electronics_101] Re:"cost reduction is king"
- In a previous life, before Disney & before downsizing,
I was a video systems designer for ABC. We had a
saying that "There's never enough money to do it
right, but there's always enough money to fix it
later". Eventually the system (control room, intercom
system, truck) worked properly, but it was
frustrating. Now however, with outsourcing produced
projects, you'd better get it right the first time,
because that's the way it's going to be. The cost is
lower, but so is the usability & reliability.
--- peter tremewen <Ptremewe@...> wrote:
> The problem with the "cost reduction is__________________________________
> king" approach I have always found, is that when it
> eventually does fail, you are the one who wears the
> blame for the fault. Clients don't wont to know that
> it broke down cause they didn't want to pay a few
> extra dollars for surge protection. Whenever a
> client comes up to me and says "I can get it cheaper
> down at blah, Blah" I simply tell them that I sell
> middle of the range equipment and that the slight
> extra expense is worth it when you consider the cost
> of break down. I consider the few clients I loose
> because of this are just not worth the trouble they
> will cause latter...... When I am asked to do so, I
> have a reputation for producing reasonable quality
> reliable equipment..... Most people, especially
> those who I have previously dealt with, are willing
> to pay just a little bit more for that I have
> The Sinister Dragon
> Of COURSE surge protection, and a gazillion other
> things besides, are in
> order. But in most industrial environments, cost
> reduction is king, and the
> bean counters in the front office get to say which
> costs get "reducted" and
> which don't.
> In other words, that's why we sub a few .10
> 1N4007s into circuits, and have
> quit trying (except for a few notable cases) to
> sell large-scale protection
> to most industrial clients. They just aren't
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- --- In Electronics_101@yahoogroups.com, "Flux" <bene-tam@d...> wrote:
> I know that using 4 diodes can do thatFor general rectification of up to an Amp, with no special
> but can anyone give an example and point out what I shoudl take care
> during the selection of the components(e.g. specification, model,
requirements, I also use the 1n400x family. I have some generic 3A
diodes in a power supply and a 25A, 50PIV bridge module in another
There are special cases where special diode selection is important.
For example, if you are rectifying very low voltages, you may want to
use low forward voltage diodes like Schottky diodes. There are also
alternative devices for noise reduction. Yes, a standard rectifier can
generate enough noise to keep a device from passing FCC requirements.
These alternatives are more expensive than either regular diodes in a
bridge circuit, or bridge modules.
- On Wednesday 03 March 2004 12:01 am, manifold wrote:
> --- In Electronics_101@yahoogroups.com, "Flux" <bene-tam@d...> wrote:Now here we differ. Those parts are rated at 1A as an "absolute maximum
> > I know that using 4 diodes can do that
> > but can anyone give an example and point out what I shoudl take care
> > during the selection of the components(e.g. specification, model,
> > type....)
> > Thanks
> For general rectification of up to an Amp, with no special
> requirements, I also use the 1n400x family.
rating", and I surely wouldn't use them for "up to an amp", maybe use them
in stuff that would go to half or three-quarters of an amp at most. You
really do need to leave some safety margin there.
> I have some generic 3A diodes in a power supply and a 25A, 50PIV bridgeFor a power supply that might go "up to an amp" I'd be using the 3A parts.
> module in another power supply.
> There are special cases where special diode selection is important.Or fairly high currents. The lower voltage drop means they run cooler, and
> For example, if you are rectifying very low voltages, you may want to
> use low forward voltage diodes like Schottky diodes.
are therefore more efficient. Which means less heat. They're commonly used
in computer power supplies, among other places.