Lower voltage diode the other side of a step up transformer?...

[Commander Kinsey]

Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

 

[Peeler]

On Sun, 26 Feb 2023 09:45:26 -0000, Birdbrain Macaw (aka \"Commander Kinsey\",
\"James Wilkinson\", \"Steven Wanker\",\"Bruce Farquar\", \"Fred Johnson, etc.),
the pathological resident idiot and attention whore of all the uk ngs,
blathered again:

<FLUSH the subnormal sociopathic trolling attention whore\'s latest
attention-baiting sick bullshit unread again>

--
damduck-egg@yahoo.co.uk about Birdbrain Macaw\'s (now \"Commander Kinsey\" LOL)
trolling:
\"He is a well known attention seeking troll and every reply you
make feeds him.
Starts many threads most of which die quick as on the UK groups anyone
with sense Kill filed him ages ago which is why he now cross posts to
the US groups for a new audience.
This thread was unusual in that it derived and continued without him
to a large extent and his silly questioning is an attempt to get
noticed again.\"
MID: <be195d5jh0hktj054mvfu7ef9ap854mjdb@4ax.com>

--
ItsJoanNotJoann addressing Birdbrain Macaw\'s (now \"Commander Kinsey\" LOL):
\"You\'re an annoying troll and I\'m done with you and your
stupidity.\"
MID: <e39a6a7f-9677-4e78-a866-0590fe5bbc38@googlegroups.com>

--
AndyW addressing Birdbrain:
\"Troll or idiot?...
You have been presented with a viewpoint with information, reasoning,
historical cases, citations and references to back it up and wilfully
ignore all going back to your idea which has no supporting information.\"
MID: <KaToA.263621$g93.262397@fx10.am4>

--
Phil Lee adressing Birdbrain Macaw:
\"You are too stupid to be wasting oxygen.\"
MID: <uv2u4clurscpat3g29l7aksbohsassufe2@4ax.com>

--
Tony944 addressing Birdbrain Macaw:
\"I seen and heard many people but you are on top of list being first class
ass hole jerk. ...You fit under unconditional Idiot and should be put in
mental institution.
MID: <VLCdnYC5HK1Z4S3FnZ2dnUU7-dPNnZ2d@giganews.com>

--
Pelican to Birdbrain Macaw:
\"Ok. I\'m persuaded . You are an idiot.\"
MID: <obru31$nao$3@dont-email.me>

--
DerbyDad03 addressing Birdbrain Macaw (now \"Commander Kinsey\" LOL):
\"Frigging Idiot. Get the hell out of my thread.\"
MID: <4d907253-b3b9-40d4-be4d-b32d453937e0@googlegroups.com>

--
Kerr Mudd-John about Birdbrain Macaw (now \"Commander Kinsey LOL):
\"It\'s like arguing with a demented frog.\"
MID: <op.yy3c02cqmsr2db@dell3100.workgroup>

--
Mr Pounder Esquire about Birdbrain Macaw (now \"Commander Kinsey\" LOL):
\"the piss poor delivery boy with no hot running water, 11 cats and
several parrots living in his hovel.\"
MID: <odqtgc$iug$1@dont-email.me>

--
Rob Morley about Birdbrain:
\"He\'s a perennial idiot\"
MID: <20170519215057.56a1f1d4@Mars>

--
JoeyDee to Birdbrain
\"I apologize for thinking you were a jerk. You\'re just someone with an IQ
lower than your age, and I accept that as a reason for your comments.\"
MID: <0001HW.1EE2D20300E7BECC700004A512CF@news.eternal-september.org>

--
Sam Plusnet about Birdbrain (now \"Commander Kinsey\" LOL):
\"He\'s just desperate to be noticed. Any attention will do, no matter how
negative it may be.\"
MID: <rOmdndd_O7u8iK7EnZ2dnUU78TGdnZ2d@brightview.co.uk>

--
thekmanrocks@gmail.com asking Birdbrain:
\"What, were you dropped on your head as a child?\"
MID: <58ddfad5-d9a5-4031-b91f-1850245a6ed9@googlegroups.com>

--
Christie addressing endlessly driveling Birdbrain Macaw (now \"Commander
Kinsey\" LOL):
\"What are you resurrecting that old post of mine for? It\'s from last
month some time. You\'re like a dog who\'s just dug up an old bone they
hid in the garden until they were ready to have another go at it.\"
MID: <59d8b0db.4113512@news.eternal-september.org>

--
Mr Pounder\'s fitting description of Birdbrain Macaw:
\"You are a well known fool, a tosser, a pillock, a stupid unemployable
sponging failure who will always live alone and will die alone. You will not
be missed.\"
MID: <orree6$on2$1@dont-email.me>

--
Richard to pathetic wanker Hucker:
\"You haven\'t bred?
Only useful thing you\'ve done in your pathetic existence.\"
MID: <orvctf$l5m$1@gioia.aioe.org>

--
clare@snyder.on.ca about Birdbrain (now \"Commander Kinsey\" LOL):
\"\"not the sharpest knife in the drawer\"\'s parents sure made a serious
mistake having him born alive -- A total waste of oxygen, food, space,
and bandwidth.\"
MID: <s5e9uclqpnabtehehg3d792tmll73se0g8@4ax.com>

--
Mr Pounder exposing sociopathic Birdbrain:
\"You will always be a lonely sociopath living in a shithole with no hot
running water with loads of stinking cats and a few parrots.\"
MID: <os5m1i$8m1$1@dont-email.me>

--
francis about Birdbrain (now \"Commander Kinsey\" LOL):
\"He seems to have a reputation as someone of limited intelligence\"
MID: <cf06cdd9-8bb8-469c-800a-0dfa4c2f9ffa@googlegroups.com>

--
Peter Moylan about Birdbrain (now \"Commander Kinsey\" LOL):
\"If people like JWS didn\'t exist, we would have to find some other way to
explain the concept of \"invincible ignorance\".\"
MID: <otofc8$tbg$2@dont-email.me>

--
Lewis about nym-shifting Birdbrain:
\"Typical narcissist troll, thinks his shit is so grand he has the right to
try to force it on everyone
MID: <slrnq16c27.1h4g.g.kreme@jaka.local>

 

[Anthony William Sloman]

On Sunday, February 26, 2023 at 8:45:34 PM UTC+11, Commander Kinsey wrote:
> Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

No. Transformers only transfer AC. As Peeler would point out. this is a remarkably dumb question.

--
Bill Sloman, Sydney

 

[John Walliker]

On Sunday, 26 February 2023 at 10:06:23 UTC, Anthony William Sloman wrote:

On Sunday, February 26, 2023 at 8:45:34 PM UTC+11, Commander Kinsey wrote:
Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?
No. Transformers only transfer AC. As Peeler would point out. this is a remarkably dumb question.

I\'m sure the OP knew the answer before posting...

John

 

[Anthony William Sloman]

On Monday, February 27, 2023 at 12:17:01 AM UTC+11, John Walliker wrote:

On Sunday, 26 February 2023 at 10:06:23 UTC, Anthony William Sloman wrote:
On Sunday, February 26, 2023 at 8:45:34 PM UTC+11, Commander Kinsey wrote:
Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

No. Transformers only transfer AC. As Peeler would point out. this is a remarkably dumb question.

I\'m sure the OP knew the answer before posting...

The OP is remarkably dumb, and has a lot of firmly held idiotic opinions, Mu guess would be that the question was sincere - it\'s no more blindly stupid that the other nonsense he comes up with.

--
Bill Sloman, Sydney

 

[Brian Gaff]

No.
At least if you are really meaning what you said here.
I\'m assuming this is some kind of mains to low voltage psu.
Surely, putting the rectifier diodes is going to be on the secondary in any
case. Depending on what you want, it can be done several ways. If the
transformer has two ends to the secondary, ie no centre tap, then you need a
bridge rectifier to allow both halves of the ac waveform to be rectified.
If it has a centre tap then you have one rectifier from the ends, ie one
for each and the centre tap as 0V
Or you could use two bridges, isolating the centre tap and get two
supplies.
Lastly, the least efficient way is one half wave rectifier across the
secondary, but then you are only really using one of the cycles of the mains
in effect.
Brian

--

--:
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...
briang1@blueyonder.co.uk
Blind user, so no pictures please
Note this Signature is meaningless.!
\"Commander Kinsey\" <CK1@nospam.com> wrote in message
newsp.10yv10c1mvhs6z@ryzen.home...

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

 

[Ralph Mowery]

In article <79bc01c5-fd8b-494b-8c73-e5174a785f3cn@googlegroups.com>,
bill.sloman@ieee.org says...

On Monday, February 27, 2023 at 12:17:01 AM UTC+11, John Walliker wrote:
On Sunday, 26 February 2023 at 10:06:23 UTC, Anthony William Sloman wrote:
On Sunday, February 26, 2023 at 8:45:34 PM UTC+11, Commander Kinsey wrote:
Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

No. Transformers only transfer AC. As Peeler would point out. this is a remarkably dumb question.

I\'m sure the OP knew the answer before posting...

The OP is remarkably dumb, and has a lot of firmly held idiotic opinions, Mu guess would be that the question was sincere - it\'s no more blindly stupid that the other nonsense he comes up with.

--
Bill Sloman, Sydney

Maybe not so dumb as just not educated in the electronics. At work an
engineer placed a 480 volt motor speed controller before a 480 to 240
volt transformer to run a 240 volt motor. Did not work.

 

[Peeler]

On Sun, 26 Feb 2023 14:49:02 -0000, Brainless & Daft, the TV-watching and
pity-baiting senile \"blind\" mole, blathered again:

> No.

Yes, you ARE a disgusting pity-baiting troll-feeding senile PIG, Brainless &
Daft!

 

[Fredxx]

On 26/02/2023 09:45, Commander Kinsey wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

No.

What IQ did you say you had? I think whoever told you was lying.

You need to expand on what you\'re trying to achieve.

 

[John Larkin]

On Sun, 26 Feb 2023 09:45:26 -0000, \"Commander Kinsey\"
<CK1@nospam.com> wrote:

>Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

Ah. Humor. Thanks for the laugh.

 

[whit3rd]

On Sunday, February 26, 2023 at 7:08:13 AM UTC-8, Ralph Mowery wrote:

... At work an
engineer placed a 480 volt motor speed controller before a 480 to 240
volt transformer to run a 240 volt motor. Did not work.

Why not? Other than increased copper losses, a transformer-coupled
AC motor should be the same as any motor.

 

[The Natural Philosopher]

On 26/02/2023 16:13, John Larkin wrote:

On Sun, 26 Feb 2023 09:45:26 -0000, \"Commander Kinsey\"
CK1@nospam.com> wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

Ah. Humor. Thanks for the laugh.

LOL!

--
Climate is what you expect but weather is what you get.
Mark Twain

 

[John Larkin]

On Sun, 26 Feb 2023 23:13:23 +0000, The Natural Philosopher
<tnp@invalid.invalid> wrote:

On 26/02/2023 16:13, John Larkin wrote:
On Sun, 26 Feb 2023 09:45:26 -0000, \"Commander Kinsey\"
CK1@nospam.com> wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

Ah. Humor. Thanks for the laugh.

LOL!

It was funny in more than one sense.

As long as one is adding diodes, may as well build a doubler on the
output side. Two topologies suggest themselves.

A center-tapped secondary could be useful too. All sorts of
possibilities.

I think I just invented the non-integer-ratio voltage multiplier.

 

[Jasen Betts]

On 2023-02-26, Commander Kinsey <CK1@nospam.com> wrote:
> Can I put a diode BEFORE a step up transformer so I can use a lower voltage diode for half wave rectification?

Garbage groups deleted.

Sure yuo can put a diode in series with the primary, but you\'ll need a larger
(higher voltage) primary winding on the transformer so as to avoid repeated
magnetic saturation of the core.

And even that that\'s not going to make rectification on the secondary
easier. All you end up doing is increasing resistive losses in
the primary.

--
Jasen.
pǝsɹǝʌǝɹ sʇɥƃᴉɹ ll∀

 

[Max Demian]

On 26/02/2023 09:45, Commander Kinsey wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

No, the transformer will turn it back into AC. It responds to /changes/
of current and a half wave will go up and then down resulting in +ve and
-ve from the secondary.

--
Max Demian

 

[Peeler]

On Mon, 27 Feb 2023 11:36:55 +0000, Max Dumbian, the REAL dumb, notorious,
troll-feeding senile idiot, blathered again:

No, the transformer will turn it back into AC. It responds to /changes/
of current and a half wave will go up and then down resulting in +ve and
-ve from the secondary.

Of course, senile Max Dumb will ALWAYS respond to the sociopathic retard\'s
most retarded \"questions\". <BG>

--
Max Dumb having another senile moment:
\"It\'s the consistency of the shit that counts. Sometimes I don\'t need to
wipe, but I have to do so to tell. Also humans have buttocks to get
smeared due to our bipedalism.\"
Message-ID: <6vydnWiYDoV1VUrDnZ2dnUU78QednZ2d@brightview.co.uk>

 

[Fredxx]

On 27/02/2023 11:36, Max Demian wrote:

On 26/02/2023 09:45, Commander Kinsey wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

No, the transformer will turn it back into AC. It responds to /changes/
of current and a half wave will go up and then down resulting in +ve and
-ve from the secondary.

Yer-but, the issue is over the transformer being subject to a DC voltage
which in the case of the OP will be:
230V x sqrt(2) x pi / 2
being developed across the transformer. That will produce a net DC
current in the transformer and make some heat for which the transformer
is not designed.

But you\'re right the secondary, before its imminent failure, will
produce an AC waveform though likely to be a very distorted sine wave.

 

[Smolley]

On Mon, 27 Feb 2023 14:21:24 +0000, Fredxx wrote:

On 27/02/2023 11:36, Max Demian wrote:
On 26/02/2023 09:45, Commander Kinsey wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

No, the transformer will turn it back into AC. It responds to /changes/
of current and a half wave will go up and then down resulting in +ve
and -ve from the secondary.

Yer-but, the issue is over the transformer being subject to a DC voltage
which in the case of the OP will be:
230V x sqrt(2) x pi / 2
being developed across the transformer. That will produce a net DC
current in the transformer and make some heat for which the transformer
is not designed.

But you\'re right the secondary, before its imminent failure, will
produce an AC waveform though likely to be a very distorted sine wave.

At half the frequency..

 

[The Natural Philosopher]

On 27/02/2023 11:36, Max Demian wrote:

On 26/02/2023 09:45, Commander Kinsey wrote:

Can I put a diode BEFORE a step up transformer so I can use a lower
voltage diode for half wave rectification?

No, the transformer will turn it back into AC. It responds to /changes/
of current and a half wave will go up and then down resulting in +ve and
-ve from the secondary.

The transformer will saturate and burn out

--
To ban Christmas, simply give turkeys the vote.

 

[Clive Arthur]

On 27/02/2023 15:29, Smolley wrote:
> On Mon, 27 Feb 2023 14:21:24 +0000, Fredxx wrote:

<snip>

But you\'re right the secondary, before its imminent failure, will
produce an AC waveform though likely to be a very distorted sine wave.

At half the frequency..

No.

--
Cheers
Clive