[Trevor Wilson[_2_]]

"Arny Krueger" wrote in message
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"Trevor Wilson" wrote in message
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"Arny Krueger" wrote in message
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"Trevor Wilson" wrote in message
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**Certainly. Proceed to the site you directed me to. Examine the
following brands and models:

Denon:
AVR485
AVR685
AVR1505
AVR1705
PMA700V

Lets see if you have done your homework, Trevor or if you are just
throwing the usual crap around.

Here's the box sco

Denon:

http://www.hifiengine.com/manuals.php?man=Denon

AVR685 not listed
AVR505 not listed
AVR1705 not listed
PMA700V not listed

The AVR 485 shows plenty of examples of op amps whose VCC supplies are
bypassed, but not decoupled.

**They're decoupled, you clown.

A few are, most are not.

**THEY ALL ARE. I examined every single one.

BTW Trevor, your reliance on abuse here rather than
relevant facts to assist your argument basically tells the whole story -
you know that you are fighting a losing battle based on just the facts. By
now, you should know far better than to try to intimidate me! Far better
men than you have tried and failed - the Middiot knows their names very
well, and so should you.

The resistance of the PCB tracks and wiring, in combination with the caps
acts as a high pass filter.

High pass filter? LOL!

**Typo, brain fart. Call it what you will. Of course it is a low pass
filter.


Time to hit the books again Trevor, the series resistance of the traces
and the parallel filter caps act like low pass filters. High pass filters
don't pass DC, and DC is what power supplies are all about, no?

Get back to me when you've studied some electronics theory.

If irony killed! It is you who just demonstrated his ignorance of basic
electronics theory!

You supplied one example where a local regulator was used (the best
system, which is usually reserved fro expensive products), whilst I
showed you 25 examples.

Time to study your own references, Trevor. There is at least one example
of a local regulator in the AVR 485.

**IC781, IC782, IC783, IC784 all use decupling caps. Stop being a ****ing
idiot.



Stop arguing.

True, I should stop arguing with people who don't even know the difference
between low pass and high pass filters.

**See above. Stop acting like a moron. I admit my error. I've provided
examples where decoupling caps are used on OP amps.


Also very many examples of op amps where VCC is
bypassed only with a small film or ceramic capacitor, and not an
electrolytic. Some examples of no proximate bypass at all.

**Nope. I checked. ALL use electros for decoupling. Every single one.
Some have film caps as well.

Nonsense. There's even a case where there are traces to support an
electrolytic, and the schematic notes that it is not installed!

**EVERY SINGLE ONE. Unlike you, I examined the schematic of every unit I
mentioned.



Bottom line Trevor, your Denon list, the first one you provided is too
flawed to bother with the rest. Come back when you've done your
homework.

**I suggest you ask someone about electronics theory. Every one of the
products listed has decoupling caps on OP amps.

There are occasional examples of that, but both components we've talked
about power most of their op amps without local decoupling filters.

**EVERY SINGLE ONE. Unlike you, I examined the schematic of every unit I
mentioned.



The logic behind this is that a good op amp has tremendous power supply
rejection, particularly at low frequencies. An op amp that does not have
good power supply rejection, is arguably substandard.

**We are discussing whether decoupling of OP amps is common. We're not
discussing the necessaity for it, or otherwise.



Trevor, please post again when you understand that it is folly to try to
try to apply power through a high pass filter.

**I admit my error. Will you now admit yours?

Trevor Wilson