Bumping this to the top I had uploaded a couple of circuits yesterday. Can an LTspice subcircuit guru help me with passing a parameter, as below? relay_driver: can use this subcircuit for each of the

“Correcting” V1 to 311V peak / 220 V RMS, after a full minute of settling down, I measure: rb: RMS(v(b))=210.556 FROM 0 TO 0.02 rc: RMS(v(c))=219.988 FROM 0 TO 0.02 rd: RMS(v(d))=229.341 FROM 0 TO

@eT, I really appreciate your contribution here.I will use it in design. 

That's usually the value that matters. At lower voltages, the (calculated) inductance is normally higher, because of the nonlinearity of the B-H curve. But the small-signal inductance (as measured by

That's because the circuit is in transient regime. You have to wait several minutes for the system to be in steady-state. Look how the voltages and currentsare asymmetrical vs. 0V/0A in the first

If you're talking about autotransformers with Si-iron laminate cores, then be careful with inductance measurements. John Woodgate kindly reminded me previously about relying on small-signa

:{) As long as the one working with the model understands that it’s not really 220VRMS, it works. In the end, it’s one constant to change, and it all works the same. I doubt even 1 Amp is used

Just a couple or three observations: 1. Try and get hold of a real 2.2 KVA auto transformer and measure the resistance and inductance of its windings. To compare real and theoretical solutions. I

I’ll look at that, thanks! Switching primary taps will throw off the 18VAC winding, which adds complexity to analyzing the AC Stabilizer over-all design, but that’s the way Hasan’s (photo)

Hi Your uploaded example appears to be a transformer with a multi-tapped primary that maintains 18v output at the secondary. I've uploaded an example "Multi_Tapped_Transformer_eT.zip" eT

A wee bit, perhaps, but it’s a work in progress, and maybe a collaborative effort. RE: The measurements, I tried 0 compression, and the voltages changed by mV’s. There were markable fewer data

@Andy and @deve, thank you a lot.Now I will sketch the circuit, partially I am trying to find the missing points in this circuit. 

I suppose not.  But your .MEAS commands are wrong.  If you are fortunate and the phase shifts are small enough, it might be "close enough for government work" (as they say) and you might get lucky

I’m well aware of that, Andy! I set it at 220 so I could easily read the plot or in .meas, as if it were RMS. Ratiometrically, it really doesn’t matter, does it? Dave Sent: Saturday, December

It's still got the wrong voltage source.  V1 is a 155 V RMS source.  It does not represent a 220 V mains voltage. Text is overlapping.  Messy. Measurements should look at RMS voltages, not

I uploaded a couple of circuits, parts that may be useful in the AC Stabilizer design: TR1: a mostly successful basic simulation of the main autotransformer relay_driver: can use this subcircuit for

Kerim, can you share that front end ACV range extender circuit? It sounds intriguing! Dave Sent: Wednesday, December 25, 2024 3:32 PM To: LTspice@groups.io Subject: EXTERNAL: Re: [LTspice] LM324

I’ll update it tomorrow; getting late here. I got answers to most of my issues, so it may be a useful stating point.   From: LTspice@groups.io <LTspice@groups.io> On Behalf OfMD

@kerim, could you kindly share any design or an example where you are trying to show boost-buck actions.Your description looks interesting but need a reference to understand at least.

I did an autotransformer example/derivation a while back *HERE ( https://groups.io/g/LTspice/files/z_groups.io/Files-sorted-by-message-number/msg_ZZZZZZ/autotransformer.asc )* It's for an RF