Sound activated 70 volt NE-2

tubbytwo · 28th November 2004, 08:08 PM

I have a one tube AM transmitter that I plug a portable CD player in to so I can broadcast old music to my antique radios. I would like to have a neon bulb on the front of the transmitter to monitor, or flash bright/dim with the music. Right now the only way I can tell if it's working is to turn on a nearby radio. I have a pilot light for the unit but this only tells when it's on. It can be powered by AC and triggered by the output (line out) of the CD. Any help here?

xocoatl · 26th December 2004, 07:38 PM

Wow. I wish I had such collection and a way like this to have fun from dealing with it. I can only watch my poststamps or listen to the sound of different opamps plugged into my buffer.... ;-)

Now about your question, I think there was a circuit like that on ESP pages. Search google with terms "esp project audio".

Hope it helps.

- Simon

28th November 2004, 08:08 PM	#1
tubbytwo diyAudio Member Join Date: Nov 2004 Location: Burbank CA	Sound activated 70 volt NE-2 I have a one tube AM transmitter that I plug a portable CD player in to so I can broadcast old music to my antique radios. I would like to have a neon bulb on the front of the transmitter to monitor, or flash bright/dim with the music. Right now the only way I can tell if it's working is to turn on a nearby radio. I have a pilot light for the unit but this only tells when it's on. It can be powered by AC and triggered by the output (line out) of the CD. Any help here? __________________ -Mike

26th December 2004, 07:38 PM	#2
xocoatl diyAudio Member Join Date: Apr 2003 Location: Kraków, PL	cool collection Wow. I wish I had such collection and a way like this to have fun from dealing with it. I can only watch my poststamps or listen to the sound of different opamps plugged into my buffer.... ;-) Now about your question, I think there was a circuit like that on ESP pages. Search google with terms "esp project audio". Hope it helps. - Simon

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