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Weiss FM demodulator

aurelZ

Jun 10, 2019
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Hi
Is there more information about Weiss FM demodulator?
thanks!
 

aurelZ

Jun 10, 2019
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On the given link there is nothing about this type of demodulator or detector.
It is strange that there is so small amount of information about this.
 

Martaine2005

May 12, 2015
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Yes, that's true.
I know what FM modulation/demodulation is but what is Weiss?
What are you trying to achieve?

Anything to do with metal detectors? as in discrimination or detection?
I am just curious.

EDIT: I just read this in Wiki....
Other FM detectors
Less common, specialized, or obsolescent types of detectors include:[8]

  • Travis[9] or double tuned circuit discriminator using two non-interacting tuned circuits above and below the nominal center frequency
  • Weiss discriminator which uses a single LC tuned circuit or crystal
  • Pulse count discriminator which converts the frequency to a train of constant amplitude pulses, producing a voltage directly proportional to the frequency
Martin
 
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aurelZ

Jun 10, 2019
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Hi Martine
Yes this one ..
all what i have is this one i found on net.Weiss_FM_Demodulator_F9JR.gif
 

aurelZ

Jun 10, 2019
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And i already build one with npn transistor C383 -vhf typeWeissDetector.gif
 

Martaine2005

May 12, 2015
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Ah ok. That circuit is on a Spanish website 'Radioaficion'.
Why not use their 'Mini chat' service y hablar.
There are thousands of circuits online that do not work. Might be why there is no info on this particular circuit.

Martin
 

aurelZ

Jun 10, 2019
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mini chat ?????
i don't speak spanish
so i think that is usefull
 

aurelZ

Jun 10, 2019
98
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Jun 10, 2019
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Heh i see
but that is not enough
In most cases specific problem
require:
knowledge about thematic
experience in thematic
so nothing wrong!
 
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