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Old 15th May 2009, 04:05 PM   #1
diyAudio Member
 
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Location: UK, bristol
Default how do tuners work !

In the olden days you twiddled a knob and that physically changed the capacitor in a tuned circuit.

What happens when I press a different channel number on my TV tuner remote?
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Old 16th May 2009, 08:08 AM   #2
Kabigon is offline Kabigon  United States
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Join Date: May 2009
See this:

http://en.wikipedia.org/wiki/Varicap
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Old 16th May 2009, 01:08 PM   #3
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Thanks.

Clever stuff these semiconductors. I predict they'll catch on.
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