WorldlyGuy
Newbie level 3
Hi everyone,
This is my first post and would love as much input as possible on designing a simple high current, regulated +/- 40Vdc power supply.
This would be used for an ILP power amplifier module (HY2006 240 Watts) to drive the center speaker of a home theater system I'm building.
It's worth checking out thee ILP modules at: **broken link removed** . I'm waiting for current demand info from ILP, but I think that 10-12 amps at regulated +/- 40Vdc would work.
I'd like to use a toridal center tap transformer.
I'd like to use a frequency doubler to make line frequency from 60hz to 120hz before rectification. This frequency doubling could happen on the secondary of the transformer in order to use smaller components. I'd like to do a simple frequency doubling at 120Hz to optimize available current under load.
I'd like to use a Schottky bridge rectifier to provide the +/- dc rails, but I'm not sure of how to do this.
I'd like to use 2 X 10000 uf (20000uf) filter capacitors on each leg of the +/- rails
Finally, I'd like to use discrete power PNP/NPN transistor in an emitter follow configuration as the final stage of the regulated power supply.
So, I've built a similar circuit some decade ago, but without frequency doubling and it was only a positive rail supply using a 2N3055 to regulate the low voltage, low current output.
I hope that I've provided sufficient detail but if you need clarification, don't hesitate to ask!
If you think that I'm completely out to lunch in this design, let me know why.
I want to stay away from a high frequency switching supply because of the inherent noise that could cause.
Thanks everyone!
Guy
This is my first post and would love as much input as possible on designing a simple high current, regulated +/- 40Vdc power supply.
This would be used for an ILP power amplifier module (HY2006 240 Watts) to drive the center speaker of a home theater system I'm building.
It's worth checking out thee ILP modules at: **broken link removed** . I'm waiting for current demand info from ILP, but I think that 10-12 amps at regulated +/- 40Vdc would work.
I'd like to use a toridal center tap transformer.
I'd like to use a frequency doubler to make line frequency from 60hz to 120hz before rectification. This frequency doubling could happen on the secondary of the transformer in order to use smaller components. I'd like to do a simple frequency doubling at 120Hz to optimize available current under load.
I'd like to use a Schottky bridge rectifier to provide the +/- dc rails, but I'm not sure of how to do this.
I'd like to use 2 X 10000 uf (20000uf) filter capacitors on each leg of the +/- rails
Finally, I'd like to use discrete power PNP/NPN transistor in an emitter follow configuration as the final stage of the regulated power supply.
So, I've built a similar circuit some decade ago, but without frequency doubling and it was only a positive rail supply using a 2N3055 to regulate the low voltage, low current output.
I hope that I've provided sufficient detail but if you need clarification, don't hesitate to ask!
If you think that I'm completely out to lunch in this design, let me know why.
I want to stay away from a high frequency switching supply because of the inherent noise that could cause.
Thanks everyone!
Guy
