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AM 2MHz inductive lamp

C

Chris Jacobson

Jan 1, 1970
0
I was looking for a way to audio AM a low MHz signal, and then I
discovered this product, the Philips QL inductive lighting system.

http://www.lamptech.co.uk/Spec Sheets/Philips QL85.htm

In particular, the 2.65 MHz 85W power supply, sold separately. I
assume this is a sealed circuit, but is there any relatively simple
way to amplitude modulate the output side with an audio sine or square
wave?

By "simple" I mean some kind of plug-in device, or a few components.
For example, could it be modulated inductively using a transformer, or
....?

The supply itself costs $250, so I would like to know in advance if I
have a fair chance of success.

BTW, I am only interested in using the PS for its signal, not to
connect to a lamp.

Chris Jacobson
 
R

Rich Grise

Jan 1, 1970
0
I was looking for a way to audio AM a low MHz signal, and then I
discovered this product, the Philips QL inductive lighting system.

http://www.lamptech.co.uk/Spec Sheets/Philips QL85.htm

In particular, the 2.65 MHz 85W power supply, sold separately. I
assume this is a sealed circuit, but is there any relatively simple
way to amplitude modulate the output side with an audio sine or square
wave?

By "simple" I mean some kind of plug-in device, or a few components.
For example, could it be modulated inductively using a transformer, or
...?
No.

The supply itself costs $250, so I would like to know in advance if I
have a fair chance of success.

EEk! And, No.
BTW, I am only interested in using the PS for its signal, not to
connect to a lamp.

What is it you intend to do? What's your end application?

Thanks,
Rich
 
C

Chris Jones

Jan 1, 1970
0
Chris said:
I was looking for a way to audio AM a low MHz signal, and then I
discovered this product, the Philips QL inductive lighting system.

http://www.lamptech.co.uk/Spec Sheets/Philips QL85.htm

In particular, the 2.65 MHz 85W power supply, sold separately. I
assume this is a sealed circuit, but is there any relatively simple
way to amplitude modulate the output side with an audio sine or square
wave?

By "simple" I mean some kind of plug-in device, or a few components.
For example, could it be modulated inductively using a transformer, or
...?

The supply itself costs $250, so I would like to know in advance if I
have a fair chance of success.

BTW, I am only interested in using the PS for its signal, not to
connect to a lamp.

Chris Jacobson

You might find that you can buy an amateur radio transmitter second hand for
that price and then it would come with the modulation facility, and
possibly some specifications too.

Chrisa
 
C

Chris Jacobson

Jan 1, 1970
0
EEk! And, No.


What is it you intend to do? What's your end application?

Thanks,
Rich

What about wrapping a coil around the lamp and driving it with the HV
audio frequency. First, enough of the 2MHz lamp QL PS output would be
attenuated to keep the lamp just below igintion point. The boost from
the coil would then effectively initiate and modulate the plasma.

If this would work, what is the best option for attenuating the 2MHz
on the output side of the QL PS?

Thanks,

Chris
 
J

joseph2k

Jan 1, 1970
0
Chris said:
What about wrapping a coil around the lamp and driving it with the HV
audio frequency. First, enough of the 2MHz lamp QL PS output would be
attenuated to keep the lamp just below igintion point. The boost from
the coil would then effectively initiate and modulate the plasma.

If this would work, what is the best option for attenuating the 2MHz
on the output side of the QL PS?

Thanks,

Chris
Due to the physics of the lamp, and the design of the lamp, cable and the RF
power generator to operate as a single system to provide a very stable
output the answer is no. I repeat, the cable and lamp are part of the
circuit, brand lock-in is just one of the results.
How about modulating 30 each 3 W white LED's instead?
 
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