Calculate Nodal Voltages

Table Of AC Results

AC Transfer Characteristic

Phasor Diagram

Time Function

Network Analysis

None of which is relevant to what you want to measure. That should be done in Transit Analysis.

Chris

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The issue is that the analyzer is instantaneous and always starts at T0. To get the average power I had to:

1. Make the battery non-ideal by adding some internal resistance.

2. Put a large cap between the meter and the circuit to integrate the power.

3. Use the power from the transient chart sometime after T0 where it levels off. The power printed on the schematic is always wrong.

Now I see each supply has an average consumption of 1W, so the circuit is about 50% efficient, that is what I expected.

If there was an easier way to just get that on the screen as part of the AC analysis, it would be nice to know. ]]>

What you have in your last post is the most accurate method of simulating. Your image is of Transit 'Plot Mode'. All those waveforms are peak values because they're instantaneous values like a scope measures. You can convert Peak values to RMS by multiplying the value at any point by 0.707.

BTW, when you punch in voltage levels on Tina AC Voltage and Current sources the value you enter is also a Peak value. So if you ever find yourself simulating a power transformer (Mains Power) and your powering it with a AC Voltage Source/Gen you have to keep that in mind.

For example: Setting up a Tina Voltage Gen for 120VAC Mains Power would require the Sinewave voltage to be set at 120V * 1.4143. More precise methods can be found on the net. Just Google "RMS to Peak Converter".

Cheers,

Chris]]>

Ahh, I see that the probed figure is for t0, the transient analysis shows the peak power alternating form the expected supply. That is very misleading.

So I am probably analyzing wrong. How do I get peak and average power over at least one waveform cycle?]]>