Hello everyone,
I am facing few problems understanding the impedance matching. I have made a few concepts reading on internet please correct where wrong plus sorry for the long question:
1)If I use the probe at 10x to measure output of my amplifier this would be the circuit fig_1 and I would get correct result as the impedance is matched.
2)Now instead of using a probe when I place a bnc female at the output of amplifier and use a coax to connect it to oscilloscope I get this circuit fig_2
Now this would work at low frequencies but at very high frequencies the impedance would decrease and thus we won't get the desired result.
3)But when I connect the output from a signal generator to the oscilloscope directly using a coax (creating the scenario in case 2) increasing frequency should show deterioration in the signal but this doesn't happen I get the same results as I should with the probe.
I am facing few problems understanding the impedance matching. I have made a few concepts reading on internet please correct where wrong plus sorry for the long question:
1)If I use the probe at 10x to measure output of my amplifier this would be the circuit fig_1 and I would get correct result as the impedance is matched.
2)Now instead of using a probe when I place a bnc female at the output of amplifier and use a coax to connect it to oscilloscope I get this circuit fig_2
Now this would work at low frequencies but at very high frequencies the impedance would decrease and thus we won't get the desired result.
3)But when I connect the output from a signal generator to the oscilloscope directly using a coax (creating the scenario in case 2) increasing frequency should show deterioration in the signal but this doesn't happen I get the same results as I should with the probe.
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