Baluncore's latest activity
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Baluncore replied to the thread Properly producing TDR on PNA network analyzer N5224B.Help manual, page 7, see the green plot examples. Experiment with different transform modes. It seems you were using an "Impulse Mode"... -
Baluncore replied to the thread Properly producing TDR on PNA network analyzer N5224B.You are plotting with a dB Log vertical axis in time mode. Try plotting with a linear vertical scale like in a TDR, the noise floor...
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Baluncore replied to the thread Nozzle Design Questions.Comments. Drilling those diagonal nozzle holes will be difficult and expensive. The differences in machining and metallurgy, between a...
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Baluncore replied to the thread Properly producing TDR on PNA network analyzer N5224B.Since it is computing the time domain from the frequency domain, it might have 'automatic fixture removal' software running that will...
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Baluncore replied to the thread Resonance definition through dip in S-parameters.The cancellation occurs where the stub joins the line between port 1 and port 2. The forward wave in the stub is reflected from the...
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Baluncore replied to the thread Resonance definition through dip in S-parameters.The "trapped" energy is not relevant. Once a high-Q resonator is oscillating, no more energy is required to keep it oscillating...
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Baluncore replied to the thread Remote Controlled Bowling Ball using Gyroscopes.I believe you can get a small but heavy RC car, inside a big lightweight ball. You must learn to drive the ball through the car. The...
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Baluncore replied to the thread Undergrad Diodes and low grade thermal energy harvesting.I have heard the laws of thermodynamics summarised as: 1. You cannot win. (There's no such thing as a free lunch). 2. You can't even...
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Baluncore replied to the thread Resonance definition through dip in S-parameters.An open-ended λ/4 transmission line stub, appears as a short circuit in the network. λ/4 is halfway around the Smith chart, so the...
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Baluncore replied to the thread Undergrad Capacitor Voltages at t = 0: Zero or Split?.Before t=0, all voltages will be zero. At t=0, the instant step in source voltage, will be attenuated by the capacitive voltage divider...
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Baluncore replied to the thread Remote Controlled Bowling Ball using Gyroscopes.No. The finger holes in the tenpin bowling ball, or the concentric rings on a lawn bowls ball, decide the axis of rotation when...
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Baluncore replied to the thread High School How can one relate jerk and force?.F = m a ; The rate at which a changes, determines the rate at which F changes. That holds for all derivatives of a.
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Baluncore replied to the thread Remote Controlled Bowling Ball using Gyroscopes.The ball itself is a gyroscopically stabilised sphere. It will only be possible to make gentle changes to the curve and direction, or to...
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Baluncore replied to the thread Graduate Practical demo - Ferromagnetic attraction at interpole boundary.Iron with a low carbon content, is a "soft" magnetic material. The steel used to make nails has high carbon content, which makes it a...
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Baluncore replied to the thread Graduate Practical demo - Ferromagnetic attraction at interpole boundary.Just because you have a reasonable sounding explanation does not make it correct. Confounding factors should be tested for and...