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Rod Speed Rod Speed is offline
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Default Twin flourescent, both flickering

Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
Fredxxx wrote
Rod Speed wrote
wrote
R D S wrote
Phil L wrote

Is there a starter? - 35p each, I'd try this first

Thought the same, done that.

So you've got switchstart fittings. Then it's wrong
starters,
bad tubes or bad contacts. The capacitor can't cause
this.

Corse it can.

And is in fact by far the most likely problem when the
tubes
arent connected in series after the things he has tried
already.
The capacitor will be across mains in.

Yes.

Good, we have got that far.

Can you explain, assuming the supply impedance is in
the
order
of a
fraction of an ohm, why a capacitor can cause the
perturbations in
voltage supply to cause a substantial flicker?

You havent established that it is causing perturbations
in the
voltage supply. And it can obviously do that by not
being a
viable cap anymore anyway.

Is that an admission that its not the capacitor?

Nope. If the tubes arent in series, that is by far
the most likely cause of the problem given
what he has tried that has made no difference.

Or are you thinking of some other capacitor
characteristic
that
might
cause this flicker,

Failure mode of electros, yep.

Electros? Is this a new component technology?

Certainly electrolytic capacitors are rarely used across
AC
mains, so
it must be some other capacitor technology.

if so do tell.

Most obviously if its got a significant partial short
now, as electros sometimes do when they have failed.
That could easily see the tubes no longer getting full
mains voltage anymore, and so flicker now.

Are you now suggesting this partial short will be causing
perturbations on mains voltage?

Nope, reduced mains voltage across the tubes.

And I didnt say WILL BE, I said IF.

Previously you said we haven't established that such a
"partial
short"
would cause "perturbations in the voltage supply".

Everyone can see themselves that I said nothing of the sort
previously.

You really ought to make your mind up.

You never could bull**** your way out of a wet paper bag.

Is that your answer to a question you have failed to answer?

Everyone can see for themselves that the question was
answered, you pathetic excuse for a lying bull**** artist.

You said it could be the cap. I have asked how:
"Can you explain, assuming the supply impedance is in the
order
of a
fraction of an ohm, why a capacitor can cause the
perturbations in
voltage supply to cause a substantial flicker?"

Everyone can see for themselves that the question was
answered, you pathetic excuse for a lying bull**** artist.

You are incapable of providing an answer as to how a faulty
capacitor
can cause flicker.

Everyone can see for themselves that you are lying
thru your ****ing teeth, as you always so when you
have got done like a ****ing dinner, as you always
are, you pathetic excuse for a lying bull**** artist.

Are you now denying your reply of "Corse it can."

to "So you've got switchstart fittings. Then it's wrong
starters, bad
tubes or bad contacts. The capacitor can't cause this."

Nope, the cap can cause what he is seeing.

Once again I ask you to explain how, given the low impedance of
supply, even lower since it will be for lighting.

You have no idea what the impedance of
the supply is with that PARTICULAR fluoro.

Most supplies are a very low impedance,

Most is irrelevant with faults.

How much power would be dissipated in a faulty 'electro' to cause a
meaningful fluctuation in voltage?

Depends on the state of the supply to the fluoro.

We have established that a 3% drop is acceptable, so for a 6Amp
circuit that equates to a max fault current of 200Amps. Lets be
generous and say we're looking at a 10% of this, say 20Amp at 240V

That aint a FAULT condition.

So how much current and power is your 'electro' taking to cause flicker?


Irrelevant when removing it stops the flicker.


reams of your **** any 2 year old could leave for dead flushed where it
belongs