To: | Jim Tonne <tonne@comcast.net>, KD7QAE <KD7QAE@ARRL.NET>,craxd1@verizon.net |
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Subject: | Re: [Amps] Need some 220K 2 watt carbon resistors |
From: | Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk> |
Reply-to: | g3rzp@g3rzp.wanadoo.co.uk |
Date: | Wed, 29 Mar 2006 16:49:44 +0200 (CEST) |
List-post: | <mailto:amps@contesting.com> |
Jim said: >With a resistor of 220K (which is what this thread is about) wouldn't the inductance be kind of so-what? < Precisely. At high frequencies, the shunt capacitance would probably dominate. And with values this high, it's not usually anything other than academic anyway. I would argue that what you need is the appreciation of the particular frequencies and resistor values at which the parasitic effects need to be considered, and where they don't. Blanket statements can be a dreadful oversimplification - like the question in Amateur Extra exam on what is resonance. 73 Peter G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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