Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

diyAudio Power Supply Circuit Board v3 illustrated build guide
diyAudio Power Supply Circuit Board v3 illustrated build guide
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
Reply
 
Thread Tools Search this Thread
Old 23rd May 2020, 02:10 AM   #1291
Extreme_Boky is offline Extreme_Boky
diyAudio Member
 
Join Date: Dec 2003
Quote:
Originally Posted by Mark Johnson View Post
This Vishay diode is in the exact same package, but its datasheet has a larger amount of information about thermal resistance. Maybe it will be a useful surrogate?

+
Thanks for the suggestion.
  Reply With Quote
Old 28th May 2020, 05:00 PM   #1292
derekr is offline derekr  Barbados
diyAudio Member
 
Join Date: Mar 2009
Quote:
Originally Posted by Ben Mah View Post
Another option is to use Molex bullet plug connectors on the wires.

Snap Plugs and Receptacles - Molex

Colour code them so no mistakes in hookup. The advantage of connection in the wire over connection on the board is that there is not excess force exerted on the board during connection or disconnection.
Ha! Those connectors conjure up suppressed nightmares of Ďgood oldí Lucas electrics on vintage cars. I have a knee jerk aversion to them for this reason but Iím sure they will work in this context. Good point re the stress relief on the board.

If only there was an alternative that didnít remind of fiddling blind behind an Elan dashboard with those things
  Reply With Quote
Old 29th May 2020, 12:31 AM   #1293
Ben Mah is offline Ben Mah  Canada
diyAudio Member
 
Join Date: May 2012
Location: Vancouver
diyAudio Power Supply Circuit Board v3 illustrated build guide
I've experienced the work of the Prince of Darkness, Joseph Lucas' company. I had a TR6 once.
  Reply With Quote
Old Yesterday, 05:46 PM   #1294
Tom V is offline Tom V  United States
diyAudio Member
 
Join Date: Jan 2010
Location: San Francisco Bay Area, Northern California
diyAudio Power Supply Circuit Board v3 illustrated build guide
Default Confused about wiring wall power to transformer

Screen Shot 2020-06-01 at 10.28.19 AM.png
This picture is from the F4 Build thread. I am confused about the wiring of the AC power to the transformer. I am US 110V power.

I would expect:
AC Line >> CL-60 >> 2 Red Transformer inputs
AC Neutral >> CL-60 >> 2 Black Transformer Inputs
Small Capacitor linking AC Line and AC Neutral

1) This picture appears to show one red wire linked to the mains thru an inrush CL-60 and the other linked directly (in the same hole). Similar for the two black wires. Why arenít the two reds and two blacks wired identically?

2) Inside the transformer are there two separate red/black >> blue/green paths, or are they linked?

3) On the other end of the transformer am I correct in thinking that one blue and green pair goes to Left Rectifier Bridge, and the other pair goes to Right Rectifier Bridge?

Thanks,

-Tom-
__________________
Burning Amp Festival: Releasing the Magic Smoke since 2007!
  Reply With Quote
Old Yesterday, 05:53 PM   #1295
Mark Johnson is offline Mark Johnson  United States
diyAudio Donor
diyAudio Member
 
Mark Johnson's Avatar
 
Join Date: May 2011
Location: Silicon Valley
diyAudio Power Supply Circuit Board v3 illustrated build guide
TomV I have different expectations than you.

If the two 120V primaries are named "Alice" and "Bob",

I expect to see a CL-60 in series with Bob_Red

I expect to see a CL-60 in series with Alice_Black

image attached.
Attached Images
File Type: jpg FirstWatt_PSU_schematic.jpg (87.1 KB, 37 views)
  Reply With Quote
Old Yesterday, 06:08 PM   #1296
Ben Mah is offline Ben Mah  Canada
diyAudio Member
 
Join Date: May 2012
Location: Vancouver
diyAudio Power Supply Circuit Board v3 illustrated build guide
If your transformer is an Antek, here is the info from Antek showing windings:
Attached Images
File Type: jpg AS_4218__09756.1389717596.1280.1280.jpg (164.8 KB, 34 views)
  Reply With Quote
Old Yesterday, 06:18 PM   #1297
Tom V is offline Tom V  United States
diyAudio Member
 
Join Date: Jan 2010
Location: San Francisco Bay Area, Northern California
diyAudio Power Supply Circuit Board v3 illustrated build guide
Thanks Mark,

That appears to be exactly what the picture shows. I will wire it that way even though I don't understand it.

Is it a good idea to fire up the power supply before the F6 boards are attached to verify +&- 25 volts and a lack of magic smoke?


Thanks Ben,

Indeed it is an Antek 4218.

-Tom-
__________________
Burning Amp Festival: Releasing the Magic Smoke since 2007!

Last edited by Tom V; Yesterday at 06:19 PM. Reason: Ben comment.
  Reply With Quote
Old Yesterday, 06:44 PM   #1298
Ben Mah is offline Ben Mah  Canada
diyAudio Member
 
Join Date: May 2012
Location: Vancouver
diyAudio Power Supply Circuit Board v3 illustrated build guide
Tom,

Definitely test the power supply before connecting the amplifier board. Also, test each channel separately. Do not connect both channels initially.

Also use a dim bulb tester for initial powerups to guard against damage in case of accidental shorts, etc.

Ben
  Reply With Quote

Reply


diyAudio Power Supply Circuit Board v3 illustrated build guideHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aleph J illustrated build guide 6L6 Pass Labs 5137 Today 12:49 PM
V3 Universal Power Supply Circuit Board Jason The diyAudio Store 412 31st May 2020 07:45 PM
An illustrated guide to building an F5 6L6 Pass Labs 1347 7th May 2020 11:14 PM
diyAudio F5 Build Guide Jason The diyAudio Store 112 19th April 2020 04:39 PM
An illustrated guide for Aleph 60 builders PKI Pass Labs 58 12th October 2013 07:13 PM


New To Site? Need Help?

All times are GMT. The time now is 03:13 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki