This thread is for the owners of Ian's excess PCBs from post 163 of his original thread Develop ultra capacitor power supply and LiFePO4 battery power supply.
The schematics were shared in post 187.
I started a Project in Mouser: Ian Ultracap PSU v1. I chose the smaller-capacity alternative as the ESR was lower too and I'm not sure I'd need that much capacity anyway. Please adjust the project accordingly, if you need the higher-capacity alternative.
The outstanding part is the LT3042 board. I will update this post when we agree which one to use. So far, there a few ready-made eBay alternatives (though with LT3045 instead and Ian warned me that we should make sure the current is limited to 200mA) and some PCBs were designed by diyaudio.com members and can be ordered from PCB manufacturers.
The list will grow here:
1. PCB: LT3042 LDO Regulator - PCBWay.
2. PCB: Ultra Low Noise Linear Power Supply, using LT3042 - OSH Park.
3. LT3045-78xx Ultralow-noise (0.8µVrms) linear regulator 0V-15V, 0.5A, 78xx Layout - eBay
4. This one is also pin-compatible, but it doesn't look as good as the one before it: LT3045 3.3V 500mA 0.8uVrms Ultra Low Noise Linear Voltage Regulator Replace 7833 - eBay
The schematics were shared in post 187.
I started a Project in Mouser: Ian Ultracap PSU v1. I chose the smaller-capacity alternative as the ESR was lower too and I'm not sure I'd need that much capacity anyway. Please adjust the project accordingly, if you need the higher-capacity alternative.
The outstanding part is the LT3042 board. I will update this post when we agree which one to use. So far, there a few ready-made eBay alternatives (though with LT3045 instead and Ian warned me that we should make sure the current is limited to 200mA) and some PCBs were designed by diyaudio.com members and can be ordered from PCB manufacturers.
The list will grow here:
1. PCB: LT3042 LDO Regulator - PCBWay.
2. PCB: Ultra Low Noise Linear Power Supply, using LT3042 - OSH Park.
3. LT3045-78xx Ultralow-noise (0.8µVrms) linear regulator 0V-15V, 0.5A, 78xx Layout - eBay
4. This one is also pin-compatible, but it doesn't look as good as the one before it: LT3045 3.3V 500mA 0.8uVrms Ultra Low Noise Linear Voltage Regulator Replace 7833 - eBay
Hi Luchoh
Do you know if this board is the finished product for Ian's UC power supply or does he have plans to further develop this PS with additional features?
Thanks
Do you know if this board is the finished product for Ian's UC power supply or does he have plans to further develop this PS with additional features?
Thanks
Put blade fuse protection at output:
ATO - FHA Series - Automotive and Commercial Vehicle Fuse Holders from Fuse Blocks Fuseholders and Fuse Accessories - Littelfuse
My 2 cents,
JP
ATO - FHA Series - Automotive and Commercial Vehicle Fuse Holders from Fuse Blocks Fuseholders and Fuse Accessories - Littelfuse
My 2 cents,
JP
I think you should ask Ian. My feeling is this was an experiment he most likely abandoned for now. He is currently focused on the LiFePO4 PSU - link to the thread in the first post - which is also very intriguing.
Here is the schematic for reference:
https://www.diyaudio.com/forums/pow...epo4-battery-power-supply-19.html#post5585910
Regards,
Ian
https://www.diyaudio.com/forums/pow...epo4-battery-power-supply-19.html#post5585910
Regards,
Ian
@Ian,
if I can bother you one more time - for the people who don't have LT3042 available - do you have recommendations for the small regulator PCB? Is the one on the picture your own design?
@luchoh
Any LDO with current limitation would be OK. That's why I use LT3042.
To use normal LDO without, you can use the inductor with internal resistance greater than 20ohm to prevent from damage by high charging current.
Regards,
Ian
Any LDO with current limitation would be OK. That's why I use LT3042.
To use normal LDO without, you can use the inductor with internal resistance greater than 20ohm to prevent from damage by high charging current.
Regards,
Ian
I don’t know which board you’re talking about, but I was hoping to get a 3-pin one so I won’t have dangling wires around.
My order of 20 LT3042 PCBs is being shipped from China now - perhaps I’ll just send over the excess to the interested members.
In my case I wouldn't be replacing existing three pin regulators, but adding them on a DAC that is using switch supplies.
The idea would be to use solid pins from each LT board to the power pad, close to the IC to be powered.
My question is about the quality of the eBay regulation board itself.
BTW, adding a solid wire to another pin, in order to convert this board into a three-pin, should be quite straightforward and fulfill your demands.
The idea would be to use solid pins from each LT board to the power pad, close to the IC to be powered.
My question is about the quality of the eBay regulation board itself.
BTW, adding a solid wire to another pin, in order to convert this board into a three-pin, should be quite straightforward and fulfill your demands.
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Now I realized I should have included the board URL
LT3042 Ultra Low Noise Regulator Module | eBay
Just found another one that seems interesting. Same thing: a 3rd pin could be added on one end
20V 200mA LT3042 Ultra-low Noise Ultra-high PSRR RFLinear Regulator Power Module | eBay
And why not buy them both, compare them and see if they both don't have genuine parts?
You are assuming something which might not be so.
You are assuming something which might not be so.
The green LT3042 pcb is not available anymore, only the violet one.
The access to the chip pins on the side is not such a bad idea to add parts.
The access to the chip pins on the side is not such a bad idea to add parts.
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Hi,
just ordered the parts from Mouser. Can someone explain the LEDs: where is Cathode and Anode and what is the orientation on the PCB. There are the contacts and on one side is a white strip - is this for the polarity?
Thank you
just ordered the parts from Mouser. Can someone explain the LEDs: where is Cathode and Anode and what is the orientation on the PCB. There are the contacts and on one side is a white strip - is this for the polarity?
Thank you
