VERY well done, @avdesignguru! Congratulations, I'm sure lots of members will be eager to build and use your board.
5 boards for less than $9 is an amazing deal; I double checked it on the excellent website PCBShopper – A Price Comparison Site for Printed Circuit Boards and verified that it is correct, see below. What a tremendously good deal.
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5 boards for less than $9 is an amazing deal; I double checked it on the excellent website PCBShopper – A Price Comparison Site for Printed Circuit Boards and verified that it is correct, see below. What a tremendously good deal.
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Attachments
Struggling to find the 470uf caps in the 10mm diameter. Anyone had luck mounting 12.5 x 25mm caps?
10mm diameter: 50V 470uF, 28mohm, Nichicon: UHW1H471MPD (Mouser)
10mm diameter: 50V 430uF, 55mohm, United Chemi-Con: EGXF500ELL431MJ25S (Newark)
10mm diameter: 50V 470uF, 60mohm, Panasonic: EEU-FC1H471L (Allied)
10mm diameter: 50V 470uF, 43mohm, United Chemi-Con: EKY-500ELL471MJ30S (Future Electronics)
12mm diameter: 63V 470uF, 27mohm, Panasonic: EEU-FR1J471B (Mouser)
Here's a Mouser parts list for the bipolar filter SMPS BPF:
Mouser Electronics
Obviously, the terminal blocks are optional.
Mouser Electronics
Obviously, the terminal blocks are optional.
Very well done, @arczar! Congratulations on a fine looking build. Raspberry pi enthusiasts will be pleased to know that this arrangement worked for you.
I don't know 🙂 But I have a calm mind. I built a version with two outputs because ultimately I want to power the DAC on the AK4493 in this way. Then there may be a difference between connecting to a regular wall power supply and using a filter.
Cool, thanks. I recently bought a second RPi and resurrected an alternative DAC board on it, and am comparing the two pairs to see which I prefer before I start fiddling with PS comparisons.
I also ordered 10 PCBs based on avdesignguru files, it was easy and fun! Inspired me to learn how to make a custom board for another project. Thanks Mark for pushing people to do that.
Happy to share a couple, but it's easy to order your own.
GnuB- let me know if you want to trade a couple bipolar for yours.
Thanks all!
Happy to share a couple, but it's easy to order your own.
GnuB- let me know if you want to trade a couple bipolar for yours.
Thanks all!
For those thinking of running a PO89ZB between a cheap "5V" wall wart and their RPi/DAC, some notes. I have three cheapies warts that measure at 4.98V, 5.04V, and 5.09V unloaded, with the voltage reading the same at the filtered end of the PO89ZB under no load. I can boot and run the RPi/DAC only with the 5.09V wart and only through the RPi's USB power plug- not through the power in on the DAC card, whether or not there is a PO89ZB in line.
Since the easiest (and cleanest?) way to add a PO89ZB would be to put it in line with power into the DAC card, if you go that route consider you might need more than 5V supply. As shown in the photos, I had to dial up the voltage to ~5.4V using a buck converter off a 12V wall wart to get the Pi/DAC to run on power in to the DAC card. This is without a PO89ZB in line. I don't have any immediate plans to try this setup with a PO89ZB as this wart/buck converter combination isn't my current choice. Anyway.
Since the easiest (and cleanest?) way to add a PO89ZB would be to put it in line with power into the DAC card, if you go that route consider you might need more than 5V supply. As shown in the photos, I had to dial up the voltage to ~5.4V using a buck converter off a 12V wall wart to get the Pi/DAC to run on power in to the DAC card. This is without a PO89ZB in line. I don't have any immediate plans to try this setup with a PO89ZB as this wart/buck converter combination isn't my current choice. Anyway.
