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Re: Making a Q-meter /

 

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Generating 20 mV drive level with a 50:1 divider only requires 1V RMS, 2.828 P-P, which I would expect most signal generators would do, or not hard for a DIY generator.? Higher drive levels for very low Q coils would be a problem.? The virtue of a low inductance resistor array like I drew is that the resistor values could be much lower than 0.02 ohms.? 1 milliohm anyone?? That rapidly creates challenges of either drive power or voltmeter sensitivity or both.

John?? KK6IL

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On 11/18/2022 3:32 PM, Mikek wrote:

On Fri, Nov 18, 2022 at 02:16 PM, John Kolb wrote:
The author's approach is not to cancel the inductance of the 0.2 Ohm (not 0.02)
Oh, he does say 0.2¦¸--- Now I don't like it :-)? I've going through the Boonton 260A manual and have the 0.02¦¸
etched in my mind.
?I see one problem with the resistive 50 to 1 voltage divider, it is the low voltage, it is 1/50th of what a 50 to 1 transformer would be.
It's always something!
??????????????????? Mikek

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--
Thanks, Mikek

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