AM 2MHz inductive lamp

Question

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.

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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

Rich Grise · Accepted Answer

No. EEk! And, No.What is it you intend to do? What's your end application?Thanks,Rich

Chris Jones · Answer

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

Chris Jacobson · Answer

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

joseph2k · Answer

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?

AM 2MHz inductive lamp

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