simonwai999
Advanced Member level 4
20va power transformer electronic formulas
hi folks
i do have a question about transformer
for example the primary of my power supply is 220
and the secondary is 9-0-9
and it says 20VA
How do i know the output current of this transformer?
is it 20/ 9 or 20/(9*1.414) or 20/(9*1.414-0.7 )?
0.7 is the voltage drop of a diode
i will use half wave rectification
Thanks in advance
hi folks
i do have a question about transformer
for example the primary of my power supply is 220
and the secondary is 9-0-9
and it says 20VA
How do i know the output current of this transformer?
is it 20/ 9 or 20/(9*1.414) or 20/(9*1.414-0.7 )?
0.7 is the voltage drop of a diode
i will use half wave rectification
Thanks in advance