Will,
Thanks for the measurements! I forgot to ask you to also measure the input voltage to your Felicia, as well as the output voltage with no load. To complete the analysis, You'd now calculate the actual load (approximate) as W = (Vm^2) / Rtot
where W is the first order appoximation of power consumption
Vm is the measured output votage of the Felicia powering that load Rtot
and
Rtot it the net resistance of the total load of the specific loads in parallel -
Rtot = 1 / [ 1/R1 + 1/R2...+ 1/Rn ]
where R1...Rn is the individually calculated nominal resistances as described previously.
It appears that these 240va MPJA transformers might support greater loads, prior to a 10-15% drop in output voltage, than those unobtainium A41 Signal transformers from BGMicro. A good thing given that they're more expensive, $18 vs $10ea. This is very good news, as I tend to be suspicious of no-name transformers.
While ideally, we'd like to power each component isolated from each other, I've found the difference between individual and shared powered (within voltage drop constaints) to not be that substantial.
I'm presently working on additional filtering/isolation from a single Felicia or individual balancing transformer, so the performance of these MPJA transformers is quite encouraging.
I want to thank you for 'stepping up to the plate' and being the first to try these transformers, a great service for those still waiting for the Signal A41s. I'm looking forward to your completing the calculations to see whether we'll get much advantage over the Signal A41s. (its too close to New Years and I'm too tired to do the calculations)
Happy dance,
Paul
