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I certainly would not try this unless all the other circuitry on the secondary side is also referenced to PE. Basically that means I would only connect this capacitor to the local GND (which might also be PE). But even that is something I would be very cautious about.
Fundamental question when...
I'd be very cautious about shields and/or filters to the injection transformer.
One of the fundamental assumptions of this method of measurement is that the injection transformer does not affect the loop transfer function at all. The more stuff you add, the more likely you are to violate this...
Yes, sometimes transmission lines are desirable, like for making couplers or splitters/combiners.
For example if I want to make a wilkinson splitter for operation at 1MHz, I'm not going to use 50m of transmission line for the quarter wavelength branches. I'll use a compact LC circuit instead...
I've never heard the term "reactive matching".
"Artificial transmission line" likely refers to a lumped element transmission line, i.e. a group of inductors/capacitors meant to behave like a transmission line.
Ok this changes everything.
Use a function generator with two outputs, and use it to directly generate the phase shifted output (with the frequency/amplitude of one output locked to the other). This is something that any decent function generator with multiple outputs should be capable of...
I can see the intent of the circuit, but also would guess doing the subtraction after attenuating the battery voltage would be the better approach.
It comes down to comparing different sources of error. Would need to do a fairly sophisticated analysis with realistic component models to really...
facepalm
This is why FvM clearly asked if a differential phase shift was acceptable.
The short answer is no, there's no way to create broadband phase shift with analog circuits.
However in practice there is probably no need to do so. If you explained why you need this phase shift and what...
1. The filter order n is the number of opamp stages in each branch. In this case you've chosen n=3
2. The number of paths is 2, no matter what. The 90 degree phase difference appears between the outputs of the two paths.
3. Referring to the figure you posted, the values of R1 and R2 have nothing...
Passband ripple can be decreased by increasing the order of the filter (i.e. more RC stages), but some amount of ripple is unavoidable (both amplitude and phase). How much is tolerable determines the minimum order of the filter (along with the bandwidth).
LTspice does have their own way of deriving bode plots automatically from transient simulations, they call it the FRA. It's not as nice as PSS with Cadence Spectre, but is better than manually stepping excitation frequency.
1742908302
As others have already said, you need a scope with an...
Sounds like you should do some basic measurements on the actual circuit:
1. Verify the switching frequency is what you expect
2. Check the Vin pin voltage waveform. Even a few tens of milliohms of source resistance might be causing Vin to dip into UVLO territory.
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