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Power Supply Soft Start Board (V3)
Power Supply Soft Start Board (V3)
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Old 14th March 2020, 03:52 PM   #351
turion64 is offline turion64  United States
diyAudio Member
 
Join Date: Mar 2019
Location: Trenton, NJ
Ah, so you’re looking to experiment with C1 & C5 ?

Pete
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Old 14th March 2020, 06:09 PM   #352
thomasnadeau is offline thomasnadeau
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by turion64 View Post
Ah, so you’re looking to experiment with C1 & C5 ?

Pete
Yes exactly. I've got both the Solen silver and regular audio caps, plus the Jensens and was going to give the Mundorfs a shot too while I am at it. I built a stock one which is my base line, and am building a second one to experiment with various caps and opamps now.

--Tom
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Old 20th March 2020, 01:48 AM   #353
thomasnadeau is offline thomasnadeau
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by Jason View Post
This thread is for discussions about the Power Supply Soft Start Board (V3) in the store. This is an updated version of the Soft Start V2 boards, primarily to make them compatible with the 10x10 grid mounting pattern we've now standardized on so they can be easily mounted to Deluxe chassis baseplate, riser panels, front panels and/or heatsinks. Refer to the Soft Start V2 discussion thread for additional information.

Change History
  • 2.0 First Production Version
  • 2.0.1 Added board dimensions
  • 3.0 New Layout
    • Double sided board
    • Moved AC in and Txfrmr connections to ends of board
    • Added Keystone connectors as option
    • Conforms to 10mm mounting grid
  • For future changes
    • Add polarity markers for electrolytic capacitor

Information
  • Product Page
  • BOM - Attached below (Last updated: Jan 14 2014)
  • Schematic - Coming soon
  • Dimensions - 110mm x 55mm


A note to anyone ordering that the following part numbers are incorrect on the .pdf BOM referenced above:

1 LED1 Red 5mm Red diffused LED 78-THLR6400 2.54mm
1 LED2 Green 5mm Green diffused LED 78-THLG6405 2.54mm

should be these Mouser part numbers:

1 LED1 Red 5mm Red diffused LED 78-TLHR6400 2.54mm
1 LED2 Green 5mm Green diffused LED 78-TLHG6405 2.54mm

Also note that the Omron relays are now these two models as the ones shown in the BOM .pdf are listed as obsolete (note the voltages):

653-G5Q-14-DC12

or

653-G5LE-1-ASIDC5


Happy Trails!
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Old 1st April 2020, 02:56 PM   #354
r_jik45 is offline r_jik45  France
diyAudio Member
 
Join Date: May 2005
Location: Fr, Jpn
Did not read the whole thread (checked V2 and V3 threads though).
At some point it was asked about the R value (before the relay is powered) according to the main voltage, around 230V in Europe, around 115V in US/Japan.
There was a formula in the V2 tread to define R: Vmain^2/current/Vsecondaries; as far as I remember.

Is the proposed softstart circuit supposed to work the same for both main voltages?
Shall R be changed according to the main (i.e. according to where the circuit is used)?
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