Hello,
I'm trying to build a split rail powersupply using LT084. I've done what I think is correct with the two supply connected like they are and sharing a common piont.
I'm going to use it for a headphone amplifier consisting of LME49710 and LME9600. I have one of those encapsulated pcb mount transformers with dual 15V secondaries 7.5VA to power it.
schview.png - Google Drive
boardview.png - Google Drive
Many thanks for any help.
I'm trying to build a split rail powersupply using LT084. I've done what I think is correct with the two supply connected like they are and sharing a common piont.
I'm going to use it for a headphone amplifier consisting of LME49710 and LME9600. I have one of those encapsulated pcb mount transformers with dual 15V secondaries 7.5VA to power it.
schview.png - Google Drive
boardview.png - Google Drive
Many thanks for any help.
Last edited:
Everything ok in general with power supply.
My little thoughts:
Add snubber before diode bridge (0.47 uF X7R 10 R).
Add small R between C8 C9 (1..5 Ohm).
R8, R9 100R - isn't it too much? It have to be about 10R (?).
R5, R6 - 20k - isn't it too much gain?
My little thoughts:
Add snubber before diode bridge (0.47 uF X7R 10 R).
Add small R between C8 C9 (1..5 Ohm).
R8, R9 100R - isn't it too much? It have to be about 10R (?).
R5, R6 - 20k - isn't it too much gain?
Last edited:
Thank you for your suggestions.
Yes, gain of 21 is probably way too high, 10k or even lower will be better.
I've seen those snubbers on diode bridges before along with the small R before the main dc capacitors think I will implement that too.
R8, R9 I chose 100R from memory from a previous design a few years back.
Thank you.
Yes, gain of 21 is probably way too high, 10k or even lower will be better.
I've seen those snubbers on diode bridges before along with the small R before the main dc capacitors think I will implement that too.
R8, R9 I chose 100R from memory from a previous design a few years back.
Thank you.