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Old 29th July 2014, 10:11 PM   #1
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Smile BPF / noise attenuator for TA7642 - improved design

Hi all! Recently I have found some new diagrams for the well known TA7642/LMF501. Here are presented some diagrams for band pass filter and at last an improved FET buffter with 2 tuned circuits.

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source: http://www.rf-world.jp/dls/fujihira/...-radio-s08.pdf
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Old 29th July 2014, 10:16 PM   #2
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*Please note that for the diagram from page 7 there is used a loopstick antena + 2 x red coils (MW oscillators) in series! The capacitor between those 2 tuned circuits is not necessary to use because of the internal capacity of the VC.
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Old 30th July 2014, 10:06 AM   #3
DF96 is offline DF96  England
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In order to avoid copyright violation it is normal to post a link, not a copy.
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Old 30th July 2014, 11:54 AM   #4
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Is not copywright because I wrote the source page like wikipedia does. In fact the website could be broken after a while and then nobody could access the information.

Trimis de pe al meu LG-P760 folosind Tapatalk
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