Is it acceptable to have 39mv voltage ripple in a power supply without load?
The power supply is as follows:
secondary power transformer 2x390 VAC -> RECTIFIER TUBE 5U4 (5V DC FIL.) -> C=30μF -> L= 4.5H -> C=100μF -> L=4.5H -> C=100μF
-> 550VDC and ripple = 39mV.
Thanks in advance for your opinion.
The power supply is as follows:
secondary power transformer 2x390 VAC -> RECTIFIER TUBE 5U4 (5V DC FIL.) -> C=30μF -> L= 4.5H -> C=100μF -> L=4.5H -> C=100μF
-> 550VDC and ripple = 39mV.
Thanks in advance for your opinion.
It's pretty irrelevant, don't you think? I assume you will use the supply to power some amp or preamp or what.
What is relevant is the ripple when powering equipment.
And even than there is no answer for all situations. It all depends on how well the amp or preamp suppresses supply ripple.
Google 'power supply rejection ratio'.
Jan
What is relevant is the ripple when powering equipment.
And even than there is no answer for all situations. It all depends on how well the amp or preamp suppresses supply ripple.
Google 'power supply rejection ratio'.
Jan
