Another power supply I am in the middle of creating. This one is for my Wayne Colburn BA2018 Linestage build. This PSU is much smaller than my previous one and uses more modern regulators.
The PCB measures 160mm x 100mm and is designed to slide straight into the rails of a Hammond 1455T2201 enclosure. Just waiting for the boards back from the fab house.
Just a few specs:
- Ultra Low Noise and Ripple thanks to a CRCRC filter.
- Full Bridge rectifier with X2 rated snubber cap.
- Enable feature to power on/off regulators with switch while leaving rest of board powered.
- Low drop out regulators with built in protection.
- LED indicators on the rails to show board has power and third LED to show ON state.
- Adjustable voltage from +/- 5v to 20v.
- Max current upto 1A dependant on transformer.
- Onboard fuse on the mains supply.
I will get a board built up when I get them for further testing.
The PCB measures 160mm x 100mm and is designed to slide straight into the rails of a Hammond 1455T2201 enclosure. Just waiting for the boards back from the fab house.
Just a few specs:
- Ultra Low Noise and Ripple thanks to a CRCRC filter.
- Full Bridge rectifier with X2 rated snubber cap.
- Enable feature to power on/off regulators with switch while leaving rest of board powered.
- Low drop out regulators with built in protection.
- LED indicators on the rails to show board has power and third LED to show ON state.
- Adjustable voltage from +/- 5v to 20v.
- Max current upto 1A dependant on transformer.
- Onboard fuse on the mains supply.
I will get a board built up when I get them for further testing.
Attachments
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Isn't the rectifier bridge too small?
Not at all it's good for upto 1.5A so half an amp more than needed. The regulators are only capable of 1A.
Another power supply I am in the middle of creating. This one is for my Wayne Colburn BA2018 Linestage build. This PSU is much smaller than my previous one and uses more modern regulators.
The PCB measures 160mm x 100mm and is designed to slide straight into the rails of a Hammond 1455T2201 enclosure. Just waiting for the boards back from the fab house.
Just a few specs:
- Ultra Low Noise and Ripple thanks to a CRCRC filter.
- Full Bridge rectifier with X2 rated snubber cap.
- Enable feature to power on/off with momentary switch.
- Low drop out regulators with built in protection.
- LED indicators on the rails to show board has power and third LED to show ON state.
- Adjustable voltage from +/- 5v to 20v.
- Max current upto 1A dependant on transformer.
- Onboard fuse on the mains supply.
I will get a board built up when I get them for further testing.
Any schematic for this?
Any schematic for this?
There you go. Think it's time I made my schematic available.
Attachments
Very nice work Gaz, these LM2941/LM2991 should get a bit more attention I think 🙂
Thank you and yes you are right, even Pete Millett uses these regulators in one of his power supplies which is what inspired my design in part. 🙂
Angela Merkel uses these and she told me the noise of LM2991 is 200 uV typical.
Donald Trump says LT3045/LT3094 are way better even when pass transistors are used. Can’t be true.
Donald Trump says LT3045/LT3094 are way better even when pass transistors are used. Can’t be true.
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I am fine with disagreement, but ffs please don't mention the great pumpkin here😡 He doesn't even work as a joke, because jokes are supposed to be funny 🙄 😀Angela Merkel uses these and she told me the noise of LM2991 is 200 uV typical.
Donald Trump says LT3045/LT3094 are way better even when pass transistors are used. Can’t be true.
These are great PCB designs ... I have ordered a few and working very well in my projects, as a DIY site we should encourage more of this ...
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