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 Using Telephone Line to Lit a CFL		  New Topic  Reply to Topic
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rjt
New Member

2 Posts
Posted - Jan 12 2009 :  11:21:56 PM  Show Profile  Reply with Quote
Hi, arron is there any way i can use Telephone line to lit a CFL tube(preferred) or the LED ?

Can u plz provide me the circuit ?

thank u, waiting for ur reply

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Jan 13 2009 :  12:13:12 AM  Show Profile  Reply with Quote
A CFL needs about 13W to light if it is a 13W bulb. A telephone line can provide maybe only 1W at 25V so it will not light a CFL.
A telephone line can light an LED or a few LEDs in series but then the current will cause the line to be busy.
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rjt
New Member

2 Posts
Posted - Jan 13 2009 :  09:47:14 AM  Show Profile  Reply with Quote
Thanx guru for replying so fast,

Can u please provide me the circuit for LED Light and also on how do i choose the resistor/diode depending on voltage on my Phone Line.

btw is there any bulb that i can use that can lit brighter bulb (no prob if the phone gets busy, i am facing 16hrs of blackout daily ;) )
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audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Jan 13 2009 :  9:48:45 PM  Show Profile  Reply with Quote
Since your electricity is blacked out for more than half of every day, then you must live on Mars or in a very poor 5th world country.
Your telephone system is probably also in pieces.
You can try to connect a few LEDs in series with a current-limiting resistor to the telephone line in the correct polarity. The LEDs will be dim.
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