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

Soft start question
Soft start question
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 22nd January 2017, 12:20 PM   #81
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
I never received a clear yes or no on this question and may have missed the answer somewhere.
A mains powered appliance can be either ClassII (double insulated) or ClassI, with mandatory PE protection that we are able to build.

Is your project mains powered?
__________________
regards Andrew T.

Last edited by AndrewT; 22nd January 2017 at 12:22 PM.
  Reply With Quote
Old 22nd January 2017, 02:46 PM   #82
Less Opinion is offline Less Opinion  United States
diyAudio Member
 
Less Opinion's Avatar
 
Join Date: Dec 2015
Location: St louis
Yes.
  Reply With Quote
Old 22nd January 2017, 04:05 PM   #83
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Then you should be building it to ClassI standard with the PE wire connected directly to the Chassis.

And any exposed conductive parts should be connected to the protected chassis.
__________________
regards Andrew T.
  Reply With Quote
Old 22nd January 2018, 11:46 PM   #84
troystg is offline troystg  United States
diyAudio Member
 
troystg's Avatar
 
Join Date: Apr 2004
Location: In a dream, Please don't wake me...
Silly question but can this be used with an SMPS power supply or is it strictly for linear power supplies? I want the momentary push button functionality but not the resistor / thermistor switched in and out of the mains. More of an off / on of the mains.
__________________
Troy
Thinking positive doesn't make things better, it makes you a better person.
  Reply With Quote
Old 23rd January 2018, 07:36 AM   #85
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Soft start question
SMPS are not usually used with a conventional soft start, in fact in some cases to do so could cause problems and even damage. The lower the AC voltage applied to an SMPS, the more current it will in fact draw as it attempts to keep the power delivered to the load constant.

SMPS do have a 'soft start' but it is integral with the electronics driving the switching elements and operates in a totally different way by controlling and restricing the duty cycle of the drive waveform.
  Reply With Quote
Old 23rd January 2018, 10:29 AM   #86
troystg is offline troystg  United States
diyAudio Member
 
troystg's Avatar
 
Join Date: Apr 2004
Location: In a dream, Please don't wake me...
Exactly, that's what I thought and why I asked to be sure.

So anyone know of a push button momentary switch solution for turning on amps?
__________________
Troy
Thinking positive doesn't make things better, it makes you a better person.
  Reply With Quote

Reply


Soft start questionHide 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
soft start and delay start - help please cl1238 Tubes / Valves 6 5th January 2016 08:46 AM
Soft Start Help munty76 Parts 0 14th February 2013 02:00 PM
Question Regarding Soft-Start J.R.Freeman Power Supplies 22 30th September 2010 01:43 AM
Soft start question a.wayne Solid State 39 8th November 2009 05:34 AM
Soft start & Soft Switch circuit: can anybody help? m.parigi Solid State 95 22nd August 2005 03:32 PM


New To Site? Need Help?

All times are GMT. The time now is 04:24 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki