"Papa" Pass has a very good explanation how to do this @home:
http://www.firstwatt.com/pdf/art_mos_test.pdf
BR, Toni
LTSpice2PCB / beta testers
Forward annotation works!
pcb/geda specific values can be directly inserted in your ltspice schematic as comments like attached picture.
Beta testers wanted.
You need following software installed:
BR, Toni
Forward annotation works!
pcb/geda specific values can be directly inserted in your ltspice schematic as comments like attached picture.
Beta testers wanted.
You need following software installed:
- PCB/Geda version >= pcb-20140316
- perl >= 5.8.7
BR, Toni
Attachments
A bit on topic and off 😉
Pledge: http://www.diyaudio.com/forums/swap-meet/277395-wnt-astx-pcb-set-sa2014-rev-3-4-2-a-new-post.html
Regards
Pledge: http://www.diyaudio.com/forums/swap-meet/277395-wnt-astx-pcb-set-sa2014-rev-3-4-2-a-new-post.html
Regards
Gerber files for sa2014 and sa2015 PCB's
Where are the Gerber files for the latest version of the sa2014 and sa2015
PCB's?😕 Or is anyone going to do a Group Buy for these AMPS?😕
Where are the Gerber files for the latest version of the sa2014 and sa2015
PCB's?😕 Or is anyone going to do a Group Buy for these AMPS?😕
See also index in first post!
For SA2014/400W rev 3.4.2 amplifier (partially old name is SA2013) you will need:
- Latest valid PCB gerber files for input/VAS and output stage board can be found in post # 979 and 980
- PCB gerber files for power supply for one channel in post # 993
- Latest schematic in post # 1145 and corrected BOM in post # 1146
- R28 (100R) needs to be reduced to 68R to get some extra PM stability.
- "asc" files can be found in post #1149
SA2015 is in development and there exists no final schematic nor pcb gerber files.
BR, Toni
2stageEF 50W MOSFET - aka SA2015MT
... works out of the box 🙂🙂🙂 without holy smoke
at a maximum of 1% THD+N, bw 80kHz:
overall THD+N < 0.004% from 20Hz - 20kHz, bw 80kHz
BR, Toni
... works out of the box 🙂🙂🙂 without holy smoke
- Quicktest with +/- 42V regulated power supply
- Bias 450mA (150mA per mosfet)
at a maximum of 1% THD+N, bw 80kHz:
- max. 82W RMS output power 8R load
- max. 145W RMS output power 4R load
overall THD+N < 0.004% from 20Hz - 20kHz, bw 80kHz
- 50W RMS output power 8R load
- 100W RMS output power 4R load
BR, Toni
Attachments
Hi Toni,
As always, well executed and looks good. Look forward to see your further progress.
I need to get myself started and building an amplifier for bas duty in an active system. So if you come by some more spare-time and energy, please send some my way. 😀 I actually plan to use IRFP240/IRFP9240, but toying with the idea of a fully balanced design for the fun of it.
Cheers,
Mogens
As always, well executed and looks good. Look forward to see your further progress.
I need to get myself started and building an amplifier for bas duty in an active system. So if you come by some more spare-time and energy, please send some my way. 😀 I actually plan to use IRFP240/IRFP9240, but toying with the idea of a fully balanced design for the fun of it.
Cheers,
Mogens
You are welcome! More measurements will follow if I find some extra spare time ... 😉
Good luck for your project - maybe you find some spare time too ...🙂
BR, Toni
Good luck for your project - maybe you find some spare time too ...🙂
BR, Toni
2stageEF 50W MOSFET - aka SA2015MT
... want more measurement data?
... want more measurement data?
- +/-42V regulated power supply.
- bias 450mA (150mA per MOSFET)
- slew rate > 90V/µS with input filter in situ
- 8R resistive load, bw 80 kHz
- no VAS protection diode installed
- 104 db full bw
- 111 dB 80kHz bw
- 119 dB A weighted
Attachments
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2stageEF 50W MOSFET - aka SA2015MT
... attached 4R resistive load measurements.
THD+N measurements of output power above 120W@4R where not always possible due to current limiter of regulated power supply.
Right picture views current consumption on 10kHz / 140W / 4R output power test. Total power delivered by power supply ~ 240W
BR, Toni
... attached 4R resistive load measurements.
THD+N measurements of output power above 120W@4R where not always possible due to current limiter of regulated power supply.
Right picture views current consumption on 10kHz / 140W / 4R output power test. Total power delivered by power supply ~ 240W
BR, Toni
Attachments
Last edited:
