AC Connector capacitor question

officeboy · 18th December 2003, 04:14 PM

I've searched all around, and I’ll bet it's here (or somewhere on the net, but heck if i can find it)

I’m robbing parts from some computer power supplies I’ve had laying around

, to use in an amp PS.

The connecter that the power cord plugs into is one of these parts. But I have a question about something that is hooked up to it inside the power supply.
There is a funny flat rectangular capacitor (yellow if that matters), that has a resistor soldered under it. That thing is connected across the hot and neutral leads. What does this do? And should I leave it there for my power supply?
I was thinking it might prevent some sort of power plug in pop or something but basically I have no idea.

li_gangyi · 18th December 2003, 04:36 PM

It's there...to reduce line RF or interference or something...the resistor is for safety to discharge the cap...or it might be a design..I'm not too sure...I haven't got a problem with it..I keep it there...mine is heatshrinked...so no fear of it going boom...

tiroth · 18th December 2003, 05:34 PM

It is the other half of the filter network formed by the input inductors in the switching supply. It won't hurt to leave it.

18th December 2003, 04:14 PM	#1
officeboy diyAudio Member Join Date: Nov 2003 Location: NW Washington	AC Connector capacitor question I've searched all around, and I’ll bet it's here (or somewhere on the net, but heck if i can find it) I’m robbing parts from some computer power supplies I’ve had laying around , to use in an amp PS. The connecter that the power cord plugs into is one of these parts. But I have a question about something that is hooked up to it inside the power supply. There is a funny flat rectangular capacitor (yellow if that matters), that has a resistor soldered under it. That thing is connected across the hot and neutral leads. What does this do? And should I leave it there for my power supply? I was thinking it might prevent some sort of power plug in pop or something but basically I have no idea.

18th December 2003, 04:36 PM	#2
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	It's there...to reduce line RF or interference or something...the resistor is for safety to discharge the cap...or it might be a design..I'm not too sure...I haven't got a problem with it..I keep it there...mine is heatshrinked...so no fear of it going boom... __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Barrel Connector Question	jdubs	Parts	1	16th March 2007 11:49 PM
Internal wiring, connector question	tempoct	Class D	0	20th January 2006 08:50 PM
Car Amplifier +12-V Connector Question	Randy Knutson	Car Audio	6	1st October 2005 12:37 AM
Alpeh Ono Connector Question	TheMyxin	Pass Labs	0	13th June 2003 05:06 AM
Digital Output connector question	Nicesmile	Digital Source	3	30th August 2002 07:00 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

18th December 2003, 05:34 PM	#3
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	It is the other half of the filter network formed by the input inductors in the switching supply. It won't hurt to leave it.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)