Black Walnut from a tree harvested at home. The enclosure was originally intended for a different projectAgreed! Love the wooden chassis - walnut? I used some walnut burl on my Aleph-J. Images are in my signature link.
Eric
Pass DIY Addict
Joined 2000
Paid Member
Pass DIY Addict
Joined 2000
Paid Member
Pass DIY Addict
Joined 2000
Paid Member
Here is my modular power supply. I didn't build it into a case, so everything is plain to see.
From left to right is the AC power entry and a 5A fuse, a CL-60 thermistor on the transformer primary, a second CL-60 for ground isloation, a 750VA 18+18 transformer, discrete rectification with snubbers and heat sinks (must ground sinks as diodes induce voltage), followed by Tea-Bag PSU CRC board with 4 x 27,000uF 50v caps per rail, separated by 3 x 0R22 3w wire wound resistors, then a three-conductor Neutric connector. The umbilical cord is 3x13ga wire.
From left to right is the AC power entry and a 5A fuse, a CL-60 thermistor on the transformer primary, a second CL-60 for ground isloation, a 750VA 18+18 transformer, discrete rectification with snubbers and heat sinks (must ground sinks as diodes induce voltage), followed by Tea-Bag PSU CRC board with 4 x 27,000uF 50v caps per rail, separated by 3 x 0R22 3w wire wound resistors, then a three-conductor Neutric connector. The umbilical cord is 3x13ga wire.
Attachments
For caps you have 4x27k (108k) per rail on the ps and 2x56k (112k) per rail on the amp side? Roughly mirrored on purpose? I am sure you want the umbilical as short as possible but does having that much capacitance on the amp side allow the umbilical to be longer? Thanks
Pass DIY Addict
Joined 2000
Paid Member
Specific values of caps is nothing more than me using what I had on hand at the time. I wanted CRC in the modular power supply, figured the umbilical will add some (small) amount of resistance, and wanted to make sure there was also local capacitance in the amp itself.
The CRC resistance is about 0R07 or so. The umbilical is 5-6ft long, plus the Neutric connectors on each end. This probably adds more than 0R07 in resistance, so the real configuration is probably something more like a CRCRC when everything is connected together. The amp is super quiet and behaves well.
The CRC resistance is about 0R07 or so. The umbilical is 5-6ft long, plus the Neutric connectors on each end. This probably adds more than 0R07 in resistance, so the real configuration is probably something more like a CRCRC when everything is connected together. The amp is super quiet and behaves well.
Pass DIY Addict
Joined 2000
Paid Member
Black Walnut from a tree harvested at home. The enclosure was originally intended for a different project
Nice wood, beautiful. Ice storm has provided me with some larger than I would like pecan timber, but walnut is so much nicer to look at (I'll use the pecan for cooking).
Pass DIY Addict
Joined 2000
Paid Member
- Home
- Amplifiers
- Pass Labs
- Pictures of your diy Pass amplifier