Partial schematic for an International Power IHBB15-1.5 psu. Single sided pcb and I only had access to the top component side, so most capacitors are missing.
Search found 10 matches
- Mon Dec 18, 2023 5:42 pm
- Forum: Document
- Topic: IHBB15-1.5 schematic
- Replies: 1
- Views: 7316
- Thu Aug 05, 2021 6:44 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Would you consider processing some song, recording the normal and quadrature mono sums, but then only publicly naming the files A and B (randomly selected) ?
- Sat Jul 31, 2021 10:02 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Using single E96 resistors per stage, the differences would be:
stage 2: 220N 12K7
stage 5: 10N 14K0
stage 6: 10N 5K36
stage 7: 1N 19K1
stage 2: 220N 12K7
stage 5: 10N 14K0
stage 6: 10N 5K36
stage 7: 1N 19K1
- Sat Jul 31, 2021 7:18 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
I tried to match the Studer component values using the equations from Weaver. studer90m.JPG Six of the eight resistors came close, but two were off by more than 10% ? Calculated phase difference from the Studer schematic studer90a.JPG Calculated phase difference from the Weaver values studer90t.JPG
- Wed Jul 21, 2021 2:43 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
S. D. Bedrosian "Normalized Design of 90deg Phase-Difference Networks"
- Wed Jul 21, 2021 2:38 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
Donald K. Weaver "Design of RC Wide-band 90 Degree Phase-Difference Network"
- Wed Jul 21, 2021 2:24 pm
- Forum: Pro Audio Design
- Topic: The Studer "90°" Dome Filter Stereo to Mono Quadrature Summer
- Replies: 48
- Views: 161413
Re: The Studer "90° Filter" Stereo to Mono Summer/Recorrelator
R. B. Dome "Wideband Phase Shift Networks"
- Wed Mar 24, 2021 6:55 pm
- Forum: Document
- Topic: Vintage Digital Clock Circuits
- Replies: 28
- Views: 117156
Re: Vintage Digital Clock Circuits
No, that was the end of clocks for me. I moved on to modular synths. Analog synths are much more forgiving - if you build something correctly, it makes some weird noise; if you make some mistakes, it makes some other weird noise. I think my next digital project was a cosmac elf.
- Tue Mar 16, 2021 8:42 pm
- Forum: Document
- Topic: Vintage Digital Clock Circuits
- Replies: 28
- Views: 117156
Re: Vintage Digital Clock Circuits
I probably killed that poor IC in a dozen different ways.
- Tue Mar 16, 2021 6:02 pm
- Forum: Document
- Topic: Vintage Digital Clock Circuits
- Replies: 28
- Views: 117156
Re: Vintage Digital Clock Circuits
Found this while cleaning. My first failed DIY project. I had no idea what I was doing.