|
|||||||
| Home | Forums | Rules | Articles | diyAudio Store | Blogs | Gallery | Wiki | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Pass Labs This forum is dedicated to Pass Labs discussion. |
  |
|
|
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
 |
|
|
Thread Tools | Search this Thread |
10th January 2019, 06:09 PM
|
#1 |
|
diyAudio Member
Join Date: Oct 2000
Location: PA, USA
|
Alternate First Watt Power Supply Schematic
Anyone know where I can find the First Watt (FW) schematic that allows channel separation via the filter caps?
Saw it somewhere in the middle of a thread. Looks almost exactly like the standard FW power supply, except a part of the supply rail is disconnected before the last reservoir cap. Can anyone verify whether or not this version helps with channel separation or is it a "six or one half dozen" situation? Thanks, Vince
__________________
I build, therefore I am. |
|
|
10th January 2019, 08:34 PM
|
#3 |
|
diyAudio Member
Join Date: Jul 2017
Location: Ireland
|
Hi Vince,
I've got a board design for that if you're interested. Mine uses 8 large caps instead of 12 smaller ones, and 12 Panasonic 3W resistors instead of 4 larger ones. It has holes for the line thermistor and a ground lift thermistor. Boards just came back from Eurocircuits today, so I haven't tested them yet. But I'd be happy to post the Kicad files (or Gerbers) once I have if anyone is interested. Cheers, Jeff. |
|
|
|
10th January 2019, 08:45 PM
|
#4 |
|
diyAudio Member
Join Date: Oct 2000
Location: PA, USA
|
That's really great Jeff!
I have KiCAD, don't know how to use it effectively, but can load a file. Gerber files would be great too. Let us know how it goes. Vince
__________________
I build, therefore I am. |
|
|
|
10th January 2019, 09:07 PM
|
#7 |
|
diyAudio Member
Join Date: Oct 2012
Location: Montpellier near Mediterranean Sea France
|
FW style psu with choke filtering are interesting option imho.
Maybe Diyers produce some pcb boards for the Hammonds chokes use.
__________________
class A amplifiers with full range speakers sings like angels in heaven 
|
|
|
|
10th January 2019, 09:25 PM
|
#8 |
|
diyAudio Member
Join Date: Nov 2016
Location: Denmark
|
Nice, boards, they look similar to the ones used in the commercial FW products. If you end up having any to spare, i'd be interested in a couple.
|
|
|
|
10th January 2019, 09:34 PM
|
#9 | |
|
diyAudio Member
Join Date: Dec 2001
Location: vancouver
|
Quote:
Just need to use 2 transformers |
|
|
|
|
10th January 2019, 09:48 PM
|
#10 |
|
Hoopy Frood
diyAudio Member
Join Date: Aug 2002
Location: Toronto, Canada
|
Unfortunately each half handles only a single polarity.
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all. - NP 2002 |
|
|
|
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| FIRST WATT B4 + Linear power supply | juanitox | Swap Meet | 6 | 26th December 2018 11:45 AM |
| Separate Power Supply for First Watt Amps | Russellc | Pass Labs | 32 | 3rd September 2018 08:37 PM |
| looking for power supply diagram SE 813 45 Watt | flyingman | Tubes / Valves | 1 | 16th February 2005 05:30 AM |
| 55 watt Aksa boards and power supply. | Tony D. | Swap Meet | 4 | 11th August 2004 07:10 AM |
| New To Site? | Need Help? |
