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Old March 22nd 17, 06:33 PM posted to rec.radio.amateur.moderated,rec.radio.amateur.homebrew
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Default QRZ Forums - Homebrew and Kit Projects for Wednesday 22 March 2017

Homebrew and Kit Projects

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$15 DIY 45 W linear on e-bay ?

Posted: 21 Mar 2017 07:52 PM PDT
http://forums.qrz.com/index.php?thre...-e-bay.560027/

Anybody actually BUILD one?

If yes, would you like to share your experience with us mortals?



73 Shirley

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Opamp Shunt Resistor Value

Posted: 21 Mar 2017 06:45 PM PDT
http://forums.qrz.com/index.php?thre...-value.560007/

Dear All,



I want to use my THS3201 Current Feedback Opamp with an AD9851 DDS
generator.



The datasheet always shows a shunt resistor of 50 Ohm or 75 Ohm at the
Opamp Input.



Is there any problem if I change the Shunt Resistor to 100Ohm or 200Ohm ?



I want to connect the AD9851 output to a shunt resistor of 200Ohm before my
THS3201 opamp.





I dont see any example or schematic of the THS3201 using a shunt resistor
value greater than 50 or 75 Ohms.



I will use my low pass filter at the Opamp...



Opamp Shunt Resistor Value


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