Adding a power button

chevy2410 · 15th January 2006, 02:21 AM

Hi all,

I'm new to gainclone and I'm waiting for delivery of my LM3886 kit and transformer. I went to my local electronics store to pick up some items and I wanted get a power button, but I'm not sure what amp to get. The fellow at the store asked me if I wanted a 2 amp, 3 amp or 10 amp switch. What do I need to get?

Cheers,
Chevy

neutron7 · 15th January 2006, 03:09 AM

get the highest rated one that will look ok. although the amp itself may not normally draw much current, when you first switch it on there is "inrush" current which can be a lot more than what it actually uses.

even a 10a switch can be very small anyways.

Nordic · 15th January 2006, 05:31 AM

Each of those chips can command about 11A

Hope you got a double pole switch...

chevy2410 · 15th January 2006, 05:14 PM

Quote:

Hope you got a double pole switch...

Actually I didn't. It's a single pole. What want is a switch or button to turn power on or off. Can you recommend what I should get and maybe where to purchase it.

Thanks,
Chevy

Ok, I did some searching and I've found what I want. Please tell if THESE is going to have a high enough amps for the LM 3886 chips. I'm looking at the RA and RC series of Rocker switches.

Bazukaz · 15th January 2006, 06:10 PM

I have found that 6A switches usually break up in a year or so, due to large surge currents when toroid transformer is turned on.

You can try using a soft-on circuit.They are sometimes sold in electronic supply shops.

neutron7 · 15th January 2006, 07:19 PM

those RC ones will do nicely.

chevy2410 · 15th January 2006, 07:48 PM

Thanks alot neutron7! Now hopefully I can find one locally.

Cheers,
Chevy

15th January 2006, 02:21 AM	#1
chevy2410 diyAudio Member Join Date: Jan 2006 Location: Abbotsford, B.C. Canada	Adding a power button Hi all, I'm new to gainclone and I'm waiting for delivery of my LM3886 kit and transformer. I went to my local electronics store to pick up some items and I wanted get a power button, but I'm not sure what amp to get. The fellow at the store asked me if I wanted a 2 amp, 3 amp or 10 amp switch. What do I need to get? Cheers, Chevy

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15th January 2006, 03:09 AM	#2
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	get the highest rated one that will look ok. although the amp itself may not normally draw much current, when you first switch it on there is "inrush" current which can be a lot more than what it actually uses. even a 10a switch can be very small anyways.

15th January 2006, 05:31 AM	#3
Nordic diyAudio Member Join Date: Sep 2005	Each of those chips can command about 11A Hope you got a double pole switch...

15th January 2006, 06:10 PM	#5
Bazukaz diyAudio Member Join Date: Nov 2005 Location: Vilnius	I have found that 6A switches usually break up in a year or so, due to large surge currents when toroid transformer is turned on. You can try using a soft-on circuit.They are sometimes sold in electronic supply shops.

15th January 2006, 07:19 PM	#6
neutron7 diyAudio Member Join Date: Dec 2003 Location: Toronto Canada	those RC ones will do nicely.

15th January 2006, 07:48 PM	#7
chevy2410 diyAudio Member Join Date: Jan 2006 Location: Abbotsford, B.C. Canada	Thanks alot neutron7! Now hopefully I can find one locally. Cheers, Chevy

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