Smiths/Timeguard Copyswitch controlling a 4 X GU10 lamp fitting.

When I replace all 4 GU10s with LED GU10s they all flash when they should be off.

If I replace one LED with a halogen GU10 - all is well.

Presume some "minimum load" has been fallen short of... any fixes?

Jim K

Jim K wrote:

When I replace all 4 GU10s with LED GU10s they all flash when they should be off.

If I replace one LED with a halogen GU10 - all is well.

Induced voltage. CFL lamps do it as well.

When the single GU10 filament lamp is in, all the power goes through
that, and heats up the filament very slightly, but not visible to the
eye.


--
Alan
To reply by mail, change '+' to 'plus'

Jim K wrote:
Smiths/Timeguard Copyswitch controlling a 4 X GU10 lamp fitting.

When I replace all 4 GU10s with LED GU10s they all flash when they
should be off.

If I replace one LED with a halogen GU10 - all is well.

Presume some "minimum load" has been fallen short of... any fixes?

http://www.tlc-direct.co.uk/Products/SMFLA01.html

--

Adam

http://www.tlc-direct.co.uk/Products/SMFLA01.html

--

Adam

/Q

Coo how's it do it? Whatever it does? ;-)

Jim K

"Jim K" wrote in message
...
http://www.tlc-direct.co.uk/Products/SMFLA01.html

--

Adam

/Q

Coo how's it do it? Whatever it does? ;-)

Go write a wiki.

On 13/02/2014 19:53, Jim K wrote:
http://www.tlc-direct.co.uk/Products/SMFLA01.html

Coo how's it do it? Whatever it does? ;-)

It's just a capacitor, possibly with a shunt bleeder resistor for safety
and possibly with a small series resistor to reduce peak currents and
save the switch contacts.

Wired across the lights it will present a low impedance in comparison
with the leakage path through the stray capacitance in the wiring and
any semiconductor switch (triac). Hence the voltage appearing across
the lights when switched off will be too small to lead to any flickering
effects or the like.

It's a useful item to know about, with wider application then just the
Smiths/Timeguard products. Flickering CFLs, unwanted illumination of
neon indicators, etc.

--
Andy

"Andy Wade" wrote in message
...
On 13/02/2014 19:53, Jim K wrote:
http://www.tlc-direct.co.uk/Products/SMFLA01.html

Coo how's it do it? Whatever it does? ;-)

It's just a capacitor, possibly with a shunt bleeder resistor for safety
and possibly with a small series resistor to reduce peak currents and save
the switch contacts.

Wired across the lights it will present a low impedance in comparison with
the leakage path through the stray capacitance in the wiring and any
semiconductor switch (triac). Hence the voltage appearing across the
lights when switched off will be too small to lead to any flickering
effects or the like.

It's a useful item to know about, with wider application then just the
Smiths/Timeguard products. Flickering CFLs, unwanted illumination of neon
indicators, etc.


I would have thought that it was just a cap and resistor in series. I must
buy one to see what is inside them. I have used similar things in the past
on boiler Y plans.


--
Adam

Ta for responses.

So is it something about the copyswitch or the wiring?

Ta
Jim K

Er.... If you plse

Jim K

"Jim K" wrote in message
...
Er.... If you plse

The switch

--

Adam

On Tuesday, 25 February 2014 19:46:25 UTC, wrote:
"Jim K" wrote in message

...

Er.... If you plse



The switch



--



Adam

cheers
never use the fecker anyway so it's time it went - anyone?

Jim K