Maker Pro
Maker Pro

Isolated, regulated, toroidal step down transformer AC power supply design.

M

Mark

Jan 1, 1970
0
Oh, dear me. Yes there is.

It's called a voltage doubling rectifier. It is a variant of the half wave
rectifier.

Ask Phil about it, he knows.

P.S. How many 'possible' values of '2' are there?

Let's count them togeather, shall we:

One
..
..

....well, I've run out of ideas. Anyone else?
 
T

Trevor Wilson

Jan 1, 1970
0
Bob Parker said:
Hey Trevor...
He doesn't know anything about electronics. You're wasting your time
discussing voltage regulators and anything else the slightest bit
technical like oscilloscopes. He's probably had to search the net to find
out what "CRO" means.
I'll just watch and smile as this bizarre thread continues... :)

**His belligerence is quite mystifying.
 
M

Mark

Jan 1, 1970
0
Yes I did mean transformer.

Yours is one of the very few contributions to this thread which was
obviously written for my edification, and not for the purpose of an
opportunistic 'free-kick', so to speak.

For that (rather solitary) attitude, I thank you.

P.S. Did you really take exception to this post because I top-posted it?

If not then the problem can't be 'top-posting', per se, right?

If so, then would you also explain what you find intrinsically offensive
about a top-post as opposed to a bottom-post? Plenty of people bottom-post
here but you don't complain.

Isn't it true that it is simply a matter of style, and therefore it is
purely a subjective judgement that you make?

If it is true that you are genuinely aggrieved by my top posting style then,
BECAUSE you have shown me the consideration due to any ordinary person, I
can change it for YOU only.

All other replies remain top posted.
 
T

Two Bob

Jan 1, 1970
0
When people ask anything from me, they must display to me the same respect
that I gave to them, when I asked something from them, or I will not
submit to their demands.

People on this group asked you for more details, and you point blank refused
to help them to help you. YOU brought this on yourself.
If the cost of this personal policy is not receiving the help I requested
then I would much prefer not to receive it. The price of self-respect is
inestimable. Is that too difficult for you to understand?

You lost your self respect within about 3 posts!!
The direct inference from your comments here and elsewhere on this thread
is that you expect me (and possibly all newcomers) to submit to this
bulling in order to receive the help that they need.

Go back and read my posts. You will see I commented against Phils comments.
After reading the rest of your excreta, I retracted my comment.

Also notice that I post in order of subject, not in a jumble at the top.
 
T

Two Bob

Jan 1, 1970
0
So your presumption may be that asking for help at 'aus.electronics' is an
idiotic thing to do? Can't really disagree with you there.

Show me where I stated that.
I stated that YOU were an idiot.
Do you go to the doctor and say that you feel crook and leave it up to him
to fix you???? Or, do you answer his questions regarding the symptoms.
I am all too aware of the inherent perils involved in asking for help on
any newsgroup inhabited by the likes of Phil and his 'Phil-o-philes'.

No perils involved. Some jump on idiots straight away, while other take a
little longer.
 
T

Two Bob

Jan 1, 1970
0
Oh, you boring little sod. Do I have to explain it all over again.

After Trevor has been trying to help you, you then go and insult him. Thats
a good idea!!!

a) I have already described their misbehaviour to the best of my ability.
I have neither the test equipment or the expertise to give you more
information. If I had that ability, I certainly wouldn't be WASTING MY
FUCKING TIME at 'aus.electronics'.

Some further food for thought, perhaps: Why do those individuals who claim
to have electronics ability [I am not in that group] WASTE THEIR FUCKING
TIME at 'aus.electronics'. Now that is a paradox inside a enigma.

b) Your assumptions about the problem are still the same as before, i.e:

i) that my 7815/7915 pair have that spec.
ii) that my 7815/7915 haven't gone faulty.
iii) that my 7815/7915 are the cause of the observed behaviour.
iv) that ALL the Regs in the application are 7815/7915 types. They aren't.
iv) I can't remember the other thing.

c) I don't know how to measure ripple current and I don't think it can be
done with an ordinary (or garden variety) DMM. I.E. I haven't got the
equipment to do it anyway.

The reference is to TXU Corp. Don't you watch TV?

Huge power supply company in Australia and a huge multinational company.
One of the biggest in the world, I suspect.

It seems somewhat anomalous with your claimed expertise in electronics
that you wouldn't instantly recognise TXU. 'Google-boy' perchance?
 
M

Mark

Jan 1, 1970
0
No, Chris. That wasn't the problem, although it may 'seem' that way to you.

I did not insult anyone who did not draw first blood. (I can think one
possible exception, but I'll deal with the other 'Bob' later)

One of the reasons why it may 'seem' that way to you is because you may not
be reading the posts in the chronological order they were written. The
structure of the thread can give this illusion, but a more careful
examination of the facts will reveal otherwise.

The policy I adhered to in this newsgroup is precisely the same one I adhere
to in all other human relations. I treat people with exactly the same
respect that they accord to me.

To quote myself from an a post I made in reply to 'Two Bob' earlier on this
same thread:

"When people ask anything from me, they must display to me the same respect
that I gave to them, when I asked something from them, or I will not submit
to their demands.

If the cost of this personal policy is not receiving the help I requested
then I would much prefer not to receive it. The price of self-respect is
inestimable. Is that too difficult for you to understand?

The direct inference from your comments here and elsewhere on this thread is
that you expect me (and possibly all newcomers) to submit to this bulling in
order to receive the help that they need.

That is the definitive behaviour of a 'Phil-of-pile's."

end quote.

It's there; go read it for yourself.

Secondly, I may well have asserted "as facts a few things that happen not to
be correct". We all harbour some false beliefs, even Phil. However, I
usually qualify statements that I am unsure of with the pre-amble "the way I
understand it". Not in all cases because like most people I understand some
things better than others. There is not the slightest trace of arrogance in
my manner. Indeed that may be the very reason why I have suffered SO MANY
attacks. em.go.

People usually equate a certain level of arrogance in others with knowledge.
If I display no arrogance then I am adjudged to have little knowledge (of
electronics, in this case). A fact that I have repetitively and consciously
confirmed, with simple admissions of that fact.

So the absence of arrogance AND the inability to defend myself with
knowledge is like a beacon to those who like to play the humiliation game.
It says: "soft target here, he can't defend himself, this is a chance to
humiliate someone".

And so it started. Phil dives in and the 'Phil-o-philes' follow suit, safe
in the knowledge that they can strike and not be stuck back.

Phil is nothing more than a common bully and so are the 'Phil-o-philes' that
trail in his wake. The 'Phil-o-phile' is extraordinarily easy creature to
identify. They are the perpetrators of the "me too" humiliations (flaming)
once Phil as identified a target for them to attack. He is the 'decider', as
he often describes himself (that he was describing himself is an inescapable
conclusion , btw.). The one who "gets to decide what others should accept or
believe."

Of course, the 'decider' must also have his first officers, and this too was
implicit in his statement. He ascribed the power to "decide what others
should accept or believe." with the qualities of a RIGHT, that is something
held by some but not others.

He does not describe on what basis he shares this right with others, but it
is a fairly safe assumption that it requires the display of superior
knowledge or experience. Power is, of course, a perfectly negotiable
commodity, so one can envisage any number of arrangements by which he might
share this power out.

You see, the organisation of 'Phil-o-philes' is essentially and elitist
club and membership has its privileges. The main privilege, is the pleasure
drawn from the public humiliation of innocent targets (or even not so
innocent targets, it doesn't really matter) These are his 'attack dogs' so
to speak.

I don't discount the possibility that other members may have their own
motivations for joining his club. Perhaps they actually like Phil but they
are more likely to be scared of him. In some circumstances their decision to
ally themselves with him is purely a practical one, it gets him off their
back and frees up their time to pursue legitimate interests within the
newsgroup. These people are more likely to be the casual observers of the
humiliations rather than his agent provocateurs.

Now, the attitude that many of the casual observers of this all too
predictable event have taken is that in order to receive the help I need, I
must be prepared acquiesce to this bulling, and they have said as much (in
once case EXACTLY that)

I am of the opinion that the price of self-respect is inestimable. If the
cost of my refusal to acquiesce is that I don't receive the help that I need
then I am prepared to pay that cost. I am completely untroubled by my
position.
 
M

Mark

Jan 1, 1970
0
I would say that is an opinion worth only about 2 cents, Bob.

Your currency (in yourself) is overvalued.

To quote myself again:

"I don't DECIDE what is 'necessary' for other people to 'know'. I DECIDE
what I will or won't TELL them about my project. That is my RIGHT as a human
being. It is called exercising my 'free will'.

Some of what I DECIDE not to tell others, MAY or MAY NOT be 'necessary' for
their understanding, but I can't and don't decide what is or what isn't
'necessary' for their understanding. Only THEY can do that and no doubt they
do."

end qote.

Now to quote yourself

"You lost your self respect within about 3 posts!!"

Think carefully now '2 cent', are you telling me what I should BELIEVE about
myself?

Let's run through it now, shall we:

i) Only I can have the quality of SELF respect. Others may or may not
respect me, but that is NOT self respect.
ii) Since only I can have self respect, it is wholly CONTINGENT on what I
believe about myself.

Yep, that does it. You are telling me what to BELIEVE about myself.

Now, does that statement fall into this category:

'deciders' are people who "decide what others should accept or believe"

hmmmmm... Yep, I'd say that qualifies.

You just qualified yourself as a 'decider' i.e. one who has the power to
decide what others accept or believe. Congratulations.

What's more astonishing, is that in this particular case, you've actully
OVERQUALIFIED for 'Phil-o-phile' club.

I didn't think it was possible, but you've done it.

You have actually ascribed to yourself the power of being able to decide
what other people THINK about themsleves.

Woah!! ...you are more Phil than Phil. (it blows my mind just thinkin' about
it)

(p.s. I actually abhor quoting myself, but it is less effort than endlessly
recomposing the same thoughts over and over again)
 
M

Mark

Jan 1, 1970
0
Just read why. Its in the thread.

Some have disputed the explanation. Others have agreed with it (with
qualifications).

I can't just keep repeating myself. Sorry.

I've already given the explanation about half a dozen times. Read the
thread.
 
B

Bob Parker

Jan 1, 1970
0
I would say that is an opinion worth only about 2 cents, Bob.

Your currency (in yourself) is overvalued.

To quote myself again:

"I don't DECIDE what is 'necessary' for other people to 'know'. I DECIDE
what I will or won't TELL them about my project. That is my RIGHT as a human
being. It is called exercising my 'free will'.

Some of what I DECIDE not to tell others, MAY or MAY NOT be 'necessary' for
their understanding, but I can't and don't decide what is or what isn't
'necessary' for their understanding. Only THEY can do that and no doubt they
do."

end qote.

Now to quote yourself

"You lost your self respect within about 3 posts!!"

Think carefully now '2 cent', are you telling me what I should BELIEVE about
myself?

Let's run through it now, shall we:

i) Only I can have the quality of SELF respect. Others may or may not
respect me, but that is NOT self respect.
ii) Since only I can have self respect, it is wholly CONTINGENT on what I
believe about myself.

Yep, that does it. You are telling me what to BELIEVE about myself.

Now, does that statement fall into this category:

'deciders' are people who "decide what others should accept or believe"

hmmmmm... Yep, I'd say that qualifies.

You just qualified yourself as a 'decider' i.e. one who has the power to
decide what others accept or believe. Congratulations.

What's more astonishing, is that in this particular case, you've actully
OVERQUALIFIED for 'Phil-o-phile' club.

I didn't think it was possible, but you've done it.

You have actually ascribed to yourself the power of being able to decide
what other people THINK about themsleves.

Woah!! ...you are more Phil than Phil. (it blows my mind just thinkin' about
it)

(p.s. I actually abhor quoting myself, but it is less effort than endlessly
recomposing the same thoughts over and over again)


Are you by any chance a preacher .... or a politician?

Do you know what 'soporific' means?

Whatever you are, you sure have a lot of spare time.
 
M

Mark

Jan 1, 1970
0
**** me! This isn't rocket science Bob.

You ascribed to me the quality of idiocy. You are, after all, a 'decider'.

I retorted with a jest. After all, I do FEEL like and idiot for asking for
help at 'aus.electronics'.

I feel like an idiot, not because I put the question in the wrong forum OR
because the expertise isn't available here to solve it, but BECAUSE I should
have known better what you and your fellow 'Phil-o-philes' would EXPECT me
to 'put up with' in order to get it. Quod Erat Demonstrandum.
 
M

Mark

Jan 1, 1970
0
I am a pensioned disabled carer. My son is servery handicapped and has been
so since birth. We decided to not to institutionalise him and care for him
at home. I am constantly on the run attending to his needs. Would you like
to speak to my wife about it?
 
M

Mark

Jan 1, 1970
0
Puffs. Trevor is no innocent bystander. He can look after himself.

On the other hand, I don't believe he is a 'Phil-of-phile's either. He has
human qualities.

On the third hand (I actually have one), I may have overreacted. I am
growing very weary of this game.

People ask me the same question, over and over again, probing for a weakness
in my explanations OR perhaps trying to extract more information from me
than I am prepared to give in a genuine attempt to help. It is a fine line
and it is difficult to know on which side each person sits.

I really don't care. I'll design my own solution. I have no doubt it will
not be optimal. I'm not even sure its going to work, but **** this for a
joke.


Two Bob said:
Oh, you boring little sod. Do I have to explain it all over again.

After Trevor has been trying to help you, you then go and insult him.
Thats a good idea!!!

a) I have already described their misbehaviour to the best of my ability.
I have neither the test equipment or the expertise to give you more
information. If I had that ability, I certainly wouldn't be WASTING MY
FUCKING TIME at 'aus.electronics'.

Some further food for thought, perhaps: Why do those individuals who
claim to have electronics ability [I am not in that group] WASTE THEIR
FUCKING TIME at 'aus.electronics'. Now that is a paradox inside a enigma.

b) Your assumptions about the problem are still the same as before, i.e:

i) that my 7815/7915 pair have that spec.
ii) that my 7815/7915 haven't gone faulty.
iii) that my 7815/7915 are the cause of the observed behaviour.
iv) that ALL the Regs in the application are 7815/7915 types. They
aren't.
iv) I can't remember the other thing.

c) I don't know how to measure ripple current and I don't think it can be
done with an ordinary (or garden variety) DMM. I.E. I haven't got the
equipment to do it anyway.

The reference is to TXU Corp. Don't you watch TV?

Huge power supply company in Australia and a huge multinational company.
One of the biggest in the world, I suspect.

It seems somewhat anomalous with your claimed expertise in electronics
that you wouldn't instantly recognise TXU. 'Google-boy' perchance?
 
M

Mark

Jan 1, 1970
0
Yeah, I can accept that.

Ok, I'll look into it. I hope they are not too expensive.

(well now I feel like one of youse guys)
 
M

Mark

Jan 1, 1970
0
No. But some of them may have expired their 'best-before-date'

I can't test them directly. I haven't got the equipment.

All I can say is that the improvement was audible, not like it jumped out of
the speakers and slapped you in the face, but clearly discernable.

Much more energy in the tweeters. I bi-amp a pair of Kappa 9 EMITs (Neo's)
and they are fucking amazing through this application.

The lower mid range and upper bass is pronouncedly less neutral, but in a
really nice way. Sort of leaves you with a warm and satisfied feeling.
 
M

Mark

Jan 1, 1970
0
Narrh. I know what a cro is. I shoot the little fuckers all the time. Hate
the cunts.
 
B

Bob Parker

Jan 1, 1970
0
No. But some of them may have expired their 'best-before-date'

I can't test them directly. I haven't got the equipment.

All I can say is that the improvement was audible, not like it jumped out of
the speakers and slapped you in the face, but clearly discernable.

Much more energy in the tweeters. I bi-amp a pair of Kappa 9 EMITs (Neo's)
and they are fucking amazing through this application.

The lower mid range and upper bass is pronouncedly less neutral, but in a
really nice way. Sort of leaves you with a warm and satisfied feeling.


Thanks for telling us all how your mysterious piece of equipment
performs with these marvellous capacitors. We'll keep guessing about
what it is, since all you've told us (that I've seen and I might have
missed it) is that it's not a preamp.
It reminds me of the rave reviews I saw many years ago, of an
English 240V power plug with gold-plated pins for turntables, which
dramatically improves the sound. Sorta like the special rubber feet for
CD players which has the same effect.
This is one of the weirdest threads I've ever seen on a newsgroup,
surpassed only by a certain French mineral prospector's obsessive hatred
of all Australians which turns up here about every second full moon.
Well .... carry on ....
 
B

Bob Parker

Jan 1, 1970
0
I am a pensioned disabled carer. My son is servery handicapped and has been
so since birth. We decided to not to institutionalise him and care for him
at home. I am constantly on the run attending to his needs. Would you like
to speak to my wife about it?

Probably a lot of us feel sympathic, even if we don't say so. It
explains a lot.
 
T

Trevor Wilson

Jan 1, 1970
0
Mark said:
No. But some of them may have expired their 'best-before-date'

**Unlikely. It requires some pretty spectacular incompetence to destroy a
three terminal regulator. They are exceptinally well protected.
I can't test them directly. I haven't got the equipment.

**Then you are wasting your time. Give the product to a proper tech and get
him/her to fix it for you. You could, of course, answer my questions about
input and ouptut Voltages. That would provide a little more insight.
All I can say is that the improvement was audible, not like it jumped out
of the speakers and slapped you in the face, but clearly discernable.
**Whatever.


Much more energy in the tweeters. I bi-amp a pair of Kappa 9 EMITs (Neo's)
and they are fucking amazing through this application.
**Whatever.


The lower mid range and upper bass is pronouncedly less neutral, but in a
really nice way. Sort of leaves you with a warm and satisfied feeling.

**Whatever.
 
S

swanny

Jan 1, 1970
0
Mark said:
Just read why. Its in the thread.

No it isn't. You simply spout a whole lot of hogwash in your thread.

Are you some kind of UFO spotter with tinfoil earplugs?
 
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