If you built a circuit with a big inductor and a big capacitor in series, such that the resonant frequency was 50Hz, then connected it to the mains, would you get current flowing 180 degrees out of phase with the voltage, and run the meter backwards?

--
Her voice had that tense grating quality, like a first-generation thermal paper fax machine that needed a band tightened.

On 09/05/2014 23:56, Uncle Peter wrote:
If you built a circuit with a big inductor and a big capacitor in
series, such that the resonant frequency was 50Hz, then connected it to
the mains, would you get current flowing 180 degrees out of phase with
the voltage, and run the meter backwards?

No.

You'd just blow a fuse somewhere (or the inductor or capacitor would
blow) since you've just connected something that's a dead short at 50Hz
across 50Hz mains.

--

Brian Gregory (in the UK).
To email me please remove all the letter vee from my email address.

On Sat, 10 May 2014 16:52:02 +0100, Brian Gregory wrote:

On 09/05/2014 23:56, Uncle Peter wrote:
If you built a circuit with a big inductor and a big capacitor in
series, such that the resonant frequency was 50Hz, then connected it to
the mains, would you get current flowing 180 degrees out of phase with
the voltage, and run the meter backwards?

No.

You'd just blow a fuse somewhere (or the inductor or capacitor would
blow) since you've just connected something that's a dead short at 50Hz
across 50Hz mains.

In that case what about the above in series with a load?

--
Q: Why can't you have a circumcised Morris dancer?
A: Because you have to be a complete prick to be a Morris dancer.

"Uncle Peter" wrote in message
news
On Sat, 10 May 2014 16:52:02 +0100, Brian Gregory
wrote:

On 09/05/2014 23:56, Uncle Peter wrote:
If you built a circuit with a big inductor and a big capacitor in
series, such that the resonant frequency was 50Hz, then connected it to
the mains, would you get current flowing 180 degrees out of phase with
the voltage, and run the meter backwards?

No.

You'd just blow a fuse somewhere (or the inductor or capacitor would
blow) since you've just connected something that's a dead short at 50Hz
across 50Hz mains.

In that case what about the above in series with a load?

You need a really huge permanent magnet clamped on the electricity meter so
the V & I coils saturate their cores on alternate half-cycles.

On Sat, 10 May 2014 22:09:58 +0100, Ian Field wrote:



"Uncle Peter" wrote in message
news
On Sat, 10 May 2014 16:52:02 +0100, Brian Gregory
wrote:

On 09/05/2014 23:56, Uncle Peter wrote:
If you built a circuit with a big inductor and a big capacitor in
series, such that the resonant frequency was 50Hz, then connected it to
the mains, would you get current flowing 180 degrees out of phase with
the voltage, and run the meter backwards?

No.

You'd just blow a fuse somewhere (or the inductor or capacitor would
blow) since you've just connected something that's a dead short at 50Hz
across 50Hz mains.

In that case what about the above in series with a load?

You need a really huge permanent magnet clamped on the electricity meter so
the V & I coils saturate their cores on alternate half-cycles.

It's a digital meter :-/

--
What do you call kinky sex with chocolate?
S&M&M

On 10/05/2014 16:52, Brian Gregory wrote:
On 09/05/2014 23:56, Uncle Peter wrote:
If you built a circuit with a big inductor and a big capacitor in
series, such that the resonant frequency was 50Hz, then connected it to
the mains, would you get current flowing 180 degrees out of phase with
the voltage, and run the meter backwards?

No.

You'd just blow a fuse somewhere (or the inductor or capacitor would
blow) since you've just connected something that's a dead short at 50Hz
across 50Hz mains.


And, come to think of it, you'd also get some ludicrously high voltage
at the junction of the inductor and capacitor, potentially instantly
destroying the capacitor. Exactly how high depends on how perfect the
inductor and capacitor are and how exactly they resonate at the mains
frequency.

--

Brian Gregory (in the UK).
To email me please remove all the letter vee from my email address.

"Uncle Peter" schreef in bericht news
If you built a circuit with a big inductor and a big capacitor in series,
such that the resonant frequency was 50Hz, then connected it to the mains,
would you get current flowing 180 degrees out of phase with the voltage, and
run the meter backwards?

--
Her voice had that tense grating quality, like a first-generation thermal
paper fax machine that needed a band tightened.


No, but you may experience some expensive fireworks. Worst (or best?) case
you may earn a Darwin award.

petrus bitbyter

"petrus bitbyter" wrote in message
l.nl...


"Uncle Peter" schreef in bericht news
If you built a circuit with a big inductor and a big capacitor in series,
such that the resonant frequency was 50Hz, then connected it to the mains,
would you get current flowing 180 degrees out of phase with the voltage,
and run the meter backwards?

Dont! - he's stupid enough to do it.

On Mon, 12 May 2014 18:27:52 +0100, Ian Field wrote:



"petrus bitbyter" wrote in message
l.nl...


"Uncle Peter" schreef in bericht news
If you built a circuit with a big inductor and a big capacitor in series,
such that the resonant frequency was 50Hz, then connected it to the mains,
would you get current flowing 180 degrees out of phase with the voltage,
and run the meter backwards?

Dont! - he's stupid enough to do it.

What are you telling him not to do? His text is missing.

--
I would defend the liberty of consenting adult creationists to practice whatever intellectual perversions they like in the privacy of their own homes; but it is also necessary to protect the young and innocent. -- Arthur C. Clarke

"Uncle Peter" wrote in message
news
On Mon, 12 May 2014 18:27:52 +0100, Ian Field
wrote:



"petrus bitbyter" wrote in message
l.nl...


"Uncle Peter" schreef in bericht news
If you built a circuit with a big inductor and a big capacitor in
series,
such that the resonant frequency was 50Hz, then connected it to the
mains,
would you get current flowing 180 degrees out of phase with the voltage,
and run the meter backwards?

Dont! - he's stupid enough to do it.

What are you telling him not to do? His text is missing.

He was telling you to put a series resonant LC across the mains.

On Wed, 14 May 2014 18:22:04 +0100, Ian Field wrote:



"Uncle Peter" wrote in message
news
On Mon, 12 May 2014 18:27:52 +0100, Ian Field
wrote:



"petrus bitbyter" wrote in message
l.nl...


"Uncle Peter" schreef in bericht news
If you built a circuit with a big inductor and a big capacitor in
series,
such that the resonant frequency was 50Hz, then connected it to the
mains,
would you get current flowing 180 degrees out of phase with the voltage,
and run the meter backwards?

Dont! - he's stupid enough to do it.

What are you telling him not to do? His text is missing.

He was telling you to put a series resonant LC across the mains.

That was my idea.

--
I'm not so think as you drunk I am...