I have used JLM Audio AC/DC power supplies on my builds, a Neve clone 4 channel pre amp and a Trident 80B clone EQ, they are still running after 12 years in a studio.
I'm having trouble finding the Bill of Materials... Could someone point me to it, please. This looks like a perfect solution for my planned BA2018 linestage / Pearl 3 project.
Thanks. Don
Thanks. Don
Don,
See the pdf attachments to post #1 in this thread for build docs including BOM.
The raw psu board that will be included in the pearl 3 kit is a similar board to this except it won’t have the regulators. Pearl 3 has the regs on the phono stage boards. Of course you could do pre regulation in the psu box at 18 or 20v, and then the p3 takes it down to 15v. Up to you.
See the pdf attachments to post #1 in this thread for build docs including BOM.
The raw psu board that will be included in the pearl 3 kit is a similar board to this except it won’t have the regulators. Pearl 3 has the regs on the phono stage boards. Of course you could do pre regulation in the psu box at 18 or 20v, and then the p3 takes it down to 15v. Up to you.
Hi Randy,
I am looking for a single rail ac-dc power supply. I have 9VAC secondary and would like +5V,500ma DC output. Will one of your FlexReg single rail supply's work for me ? Also PM'd you.
Thanks,
MM
I am looking for a single rail ac-dc power supply. I have 9VAC secondary and would like +5V,500ma DC output. Will one of your FlexReg single rail supply's work for me ? Also PM'd you.
Thanks,
MM
Thanks for making this. Are you willing to share the PCB files for both the single and dual rail designs so that I can get the boards made locally? I'm assuming that the boards are designed using KiCad? I've been using KiCad for many years so no worries there. I hope you can help? Thanks.
I'm not posting/sharing gerbers for this board. I'm happy to ship PCBs to UK. Drop me a PM if interested.
Randy does very nice work. You won't be disappointed.Thanks for making this. Are you willing to share the PCB files for both the single and dual rail designs so that I can get the boards made locally? I'm assuming that the boards are designed using KiCad? I've been using KiCad for many years so no worries there. I hope you can help? Thanks.
Regards,
Dan
Hi, can I change the values of the 0R51 resistors between the capacitors? What resistance values can be used using 4700µF capacitors? Thank you
@rhthatcher
Two things:
I'm thinking about using Flexreg supplies to feed Didden SuperRegulators which prefer separate supplies to each of their +ve and -ve sides. Can the FlexReg board be configured to do this? (remove the link shown in the schematic??)
The pads for transformers seem to be suitable for various Triad -C2 units. Is this true?
Two things:
I'm thinking about using Flexreg supplies to feed Didden SuperRegulators which prefer separate supplies to each of their +ve and -ve sides. Can the FlexReg board be configured to do this? (remove the link shown in the schematic??)
The pads for transformers seem to be suitable for various Triad -C2 units. Is this true?
Are you thinking of using the FlexReg as a pre-regulator upstream of the Didden SuperReg?
Can you sketch out what you're thinking and post a picture? I'm not clear on the concept. Also, what do you mean by "remove the link shown in the schematic?"
Regarding the transformer - which Triad transformer did you have in mind? Do you have a specific part number? The boards are set up for on-board mounting of the Talema or Amgis or similar transformers. The other transformer connections are for connecting wires, not for a transformer to be dropped in. There were zero considerations for those wired connection points to line up with any transformer physically or electrically.
Can you sketch out what you're thinking and post a picture? I'm not clear on the concept. Also, what do you mean by "remove the link shown in the schematic?"
Regarding the transformer - which Triad transformer did you have in mind? Do you have a specific part number? The boards are set up for on-board mounting of the Talema or Amgis or similar transformers. The other transformer connections are for connecting wires, not for a transformer to be dropped in. There were zero considerations for those wired connection points to line up with any transformer physically or electrically.
I am indeed.
This is not a new or novel concept. Tom Evans has been using layered regulation for quite a while. And recently, a builder named Craig has been using preregulators for his builds to good effect (he reports).
Me, I mostly want to send an optimal voltage to the circuit regulators by setting that incoming voltage in the remote power supply.
My question on the grounding on your boards is based on your schematic "FlexReg Dual Rail Power Supply (Rev: V 1.0b) On that drawing you show separate grounds coming from the individual bridges all the way to the output. You show these separate grounds connected at the output. Since I don't have the PCB I'm asking, is that a link connecting separate grounds on the PCB? A link that I can omit?
I ask because Jan recommends separate connections to each rail input of his regulators.
The transformers I'm planning to use are the "-C2" versions.. eg Triad F48-400-C2. I guess I'll have to get creative.
This is not a new or novel concept. Tom Evans has been using layered regulation for quite a while. And recently, a builder named Craig has been using preregulators for his builds to good effect (he reports).
Me, I mostly want to send an optimal voltage to the circuit regulators by setting that incoming voltage in the remote power supply.
My question on the grounding on your boards is based on your schematic "FlexReg Dual Rail Power Supply (Rev: V 1.0b) On that drawing you show separate grounds coming from the individual bridges all the way to the output. You show these separate grounds connected at the output. Since I don't have the PCB I'm asking, is that a link connecting separate grounds on the PCB? A link that I can omit?
I ask because Jan recommends separate connections to each rail input of his regulators.
The transformers I'm planning to use are the "-C2" versions.. eg Triad F48-400-C2. I guess I'll have to get creative.
Craig is using the FlexReg on several things including Pearl 3. In the P3 case it's pre-reg externally, then the onboard regs and CapMx.
If you look at the picture below you can see the blue is the bottom copper layer, red is traces on top of the board. The output ground is connected to a "pour", or large ground plane, on the bottom of the board. There is no way to break the 2 rails to have separate grounds based on this PCB.
I don't know Jan's boards in detail. Looking at the schematics, I can think of 2 solutions with my boards that will feed 2 rails to the SuperReg.
Flex Reg + Out to Super Reg Pos +DC In
Flex GND Out to Super Reg Pos Return
Flex GND Out to Super Reg Neg Return
Flex Reg - Out to Super Reg Pos -DC In
OR for the GND you could do run one wire over the SuperReg and jump them at the SuperReg side.
Electrically that puts a star ground at the output of the FlexReg. I don't know the grounding setup that Jan recommends.
If you look at the picture below you can see the blue is the bottom copper layer, red is traces on top of the board. The output ground is connected to a "pour", or large ground plane, on the bottom of the board. There is no way to break the 2 rails to have separate grounds based on this PCB.
I don't know Jan's boards in detail. Looking at the schematics, I can think of 2 solutions with my boards that will feed 2 rails to the SuperReg.
Flex Reg + Out to Super Reg Pos +DC In
Flex GND Out to Super Reg Pos Return
Flex GND Out to Super Reg Neg Return
Flex Reg - Out to Super Reg Pos -DC In
OR for the GND you could do run one wire over the SuperReg and jump them at the SuperReg side.
Electrically that puts a star ground at the output of the FlexReg. I don't know the grounding setup that Jan recommends.
- Home
- Amplifiers
- Power Supplies
- FlexReg Single and Dual Rail Regulated Power Supply using 78xx/79xx OR 317/337