Re: Tektronix 50 Ohm Terminator / Attenuators
Indeed this whole thing of 50Ohm input and output impedance gets confusing.
I start thinking of e.g. the 5x attenuator, how exactly would be the
voltage divider values (and a parallel input resistor, or a series output
resistor), but I can't seem to solve the equation on my head.
I know that the divider must present 50 Ohm impedance to the source, and
that to calculate its 5:1 ratio one must take in account that it must have,
at the same time, 50Ohm output impedance and be already loaded by 50Ohm at
Fine up 'til this point, but when I try to sort out the output impedance
and consider that it also reflects part of the source impedance and part of
the input impedance... It mind blows me.
I know it's a matter of looking at it by Kirchoff's and Thevenin's rules...
but it's a little counter-intuitive at first.
Does anyone have the actual values of the resistors of a would-be 50Ohm 5X
attenuator? Not that I`m going to build it, but just to see if it agrees to
2017-05-25 9:52 GMT-03:00 Chuck Harris cfharris@... [TekScopes] <
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