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Old November 24th 09, 05:00 PM posted to rec.radio.amateur.antenna
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Default How can one make a dummyload from a LC circuit ?


"Dave Platt" wrote to our discintent:
A small LC circuit will not do a good job of either of these things...
won't radiate efficiently and won't have enough resistance to act as a
comfortable dummy load (e.g. Zo near 50+0j).


All amateurs here who i suppose 'believe' to much. Do you go to church
every sunday ?
- sometimes dummyloads are used in input stages of a valve or mosfet p.a.
because valves and mosfet only use the rf voltage NOT the power.
So the driver stage (xmttr) has to be dummyloaded and tapped.
Understand ?
-Then the remark : " a LC circuit won't radiate efficiently " . So what?
Thats exactly what i need here.
- so every LC series circuit you see in schematics, ìf you see them, you call
shortcuts ??
- If you use an antennatuner for a 'nittingneedle' you will get a 1:1, and we don't care the
bad radiation pff, and that antennatuner has a series LC circuit inside !!
So no shortcut at all, dummy.
So whats your point ? I only asked about the practice of the consept.

I see its easier the become doctor in the usa then farmer in Belgium ...


 
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