Quote:
Originally Posted by ms660
PSUD2:
Reservoir capacitor ripple voltage percentage = 3.99%
RMS rectifier anode current = 0.1888 Amps
Rectifier anode supply VA = 45.31
Schades Curves:
Reservoir capacitor ripple voltage percentage = 4.2% (approx.)
RMS rectifier anode current = 0.198 Amps (approx.)
Rectifier anode supply VA = 47.52 (approx.)
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It's pretty good agreement between the two!
I wanted 315V at 90mA some years ago... I decided on a 5Z4 rectifier and designed the transformer to suit, using Schade's curves, making a few assumptions such as winding resistance etc to start off.
Going round calculations at least one further time (might have been two) to refine turns, winding resistance, etc... I ended up with a transformer design.
Making it, connecting rectifier, reservoir cap, dummy load, input via Variac to set to exactly 240V, I measured DC output voltage.
318V.
Just over 1% different from desired.