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Subject: Voltage doublers & triplers

Date: 09/24/02 at 12:06 PM
Posted by: John Campbell
E-mail: jgcampbell@charter.net
Message Posted:

I am attempting to detect composite TV signals off air and or from a cable system. The levels are 1,000 microvolts (0 DBmv) + or - 20 DB. A single RF diode gives me a measurable voltage and a doubler gives me twice the voltage, but it is not enough to drive an op amp when
the imput is less than 500 microvots (-6 DBmv). I have tried to multiple further, but can't determine Cap. values and selection of diodes. Thanks

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