Sinusoidal Power Source

for a resistive load, use a constant current source in series with a variable voltage source

What if the load is mostly inductance?

Bret Cahill

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then you run a spice simulation, evaluate it using your insights, report the result here at length, posting excerpts from the text outputs concerning the inductors currents, powers, and voltages. i await the report with mostly eagerness

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Some don't have to think out loud. Some do.

Bret Cahill

Some can't think at all, like Cahill.

Not exactly; that reuires sine voltage AND sine current, not 'OR'.

But... it averages to zero. That's not a useful result from a power meter, 'cuz the bill isn't going to be big enough to be worth mailing to the power customer.

Using waveform arithmetic on SPICE you can multiply the voltage by the current to get the power waveform. With a sin voltage or sine current input the power curve is a sin^2 waveform.

Is there any way to rig up a sin^1 power curve source on SPICE? The voltage dependent voltage source or voltage dependent current source look like they might be useful here.

Bret Cahill

Sin^1 power is Sin power you idiot.

What have you been smoking?

Which is the case when the impedance is 100% inductance. Energy is conserved.

This seems to be the case when current source is 90 degrees ahead of voltage in a simple inductor circuit.

Bret Cahill

That point needed to be emphasized.

Bret Cahill