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Old 11th Oct 2010, 9:21 pm   #20
Alistair D
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Join Date: Jan 2010
Location: Edinburgh, UK.
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Default Re: Product detector circuit

Quote:
Originally Posted by Sideband View Post
Those are the same circuits I have although my RSGB edition is slightly later dated June 1969. They give the value of the RF choke in the 12AU7 (ECC82) circuit as 1.5 to 2.5mH. Should be dead easy to build that into an exsiting receiver.



SB
Have a look at page 4.20 of your edition there is a variation of the circuit that does not have the RFC. That was the one I found last night.

Al
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