diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Chip Amps (http://www.diyaudio.com/forums/chip-amps/)
-   -   Velleman K4003 power supply (http://www.diyaudio.com/forums/chip-amps/93747-velleman-k4003-power-supply.html)

Gnitrops 8th January 2007 07:33 PM

Velleman K4003 power supply
 
Hi,

I recently bought a K4003 kit from Velleman, which is a 2x 30W chip amp built with TDA2616. (info here: http://www.velleman-kit.com/download...k4003_rev1.pdf)

I want to put the amp in my car, connecting the speakers and my mp3 player. What transformer should I look for?

em2006 10th January 2007 02:26 PM

Your amplifier is designed for mains fed applications, the circuit is optimally designed for symmetrical power supplies.

Velleman K4003 stereo amplifier needs a supply voltage 2X12VAC/2A(50W).
This amp cannot supply from car's battery directly, you need a CONVERTER (or, you can use two batteries - see manual Page 8 - but it is a inconvenient solution).

Gnitrops 10th January 2007 07:37 PM

Thanks for your reply em2006 :)

What kind/model of converter should I be looking for then? Any suggestions on where can I get more informed about it?

Cheers,
Gnitrops

em2006 10th January 2007 11:04 PM

I want to know about your MP3 player you want to put in your car:
-supply voltage
-power consumption, or amperage
to choose a converter suitable for both units (amplif + CD player).

Gnitrops 20th January 2007 07:33 PM

The MP3 Player is a MuVo, takes a normal 1.5V AAA battery (currently using a 850mAh rechargeable).

Gnitrops 28th January 2007 01:08 AM

Anyone can give me a hand, or some directions, here? Thanks in advance :)

em2006 28th January 2007 05:23 PM

2 Attachment(s)
The best solution is to buy an amplifier that need 12VDC power suplly.
The K4003 needs a symetric power supply (double power supply).

If you'll try to use a single supply, you will destroy the amplifier.

The Velleman K4003 is constructed to use a transformer connected to mains voltage:
-version 1 - OPEN-FRAME TRANSFORMER 48VA 2 x 12V / 2 x 2A
Order Code: 212048
http://www.velleman.be/es/en/product...ct.asp?id=997#
-version 2 - TOROIDAL TRANSFORMER 50VA 2 x 12V / 2 x 2.08A
Order Code: 5012
http://www.velleman.be/es/en/product...t.asp?id=1909#

If you want to use a car battery anyway, two solutions are posible:
1- a transformer above mentioned and a DC/AC converter wich converts the
12VDC to 230VAC (see attached solution1.png)
2-a DC/DC converter wich converts the 12VDC to 2x15VDC (see attached solution2.png)

The 2nd solution is preferable.

Using the converters in this application is an inconvenient solution.
Is more simple, reliable and cheaper to buy an amplifier that need 12VDC power suplly.

em2006 28th January 2007 05:27 PM

2 Attachment(s)
Quote:

Originally posted by em2006
...
2-a DC/DC converter wich converts the 12VDC to 2x15VDC (see attached solution2.png)...


Baztien 18th February 2011 02:25 PM

Hoping this forum is still beeing read, here is my questions:
I'm trying to select a power supply for my K4003 and I've selected few transformer:
-Maplin N57JB
-Rapid electronics VTX-126-050-212
-RS 504-672

Is that the kind of transfo required? would you recommend any?

Last question: I bought my K4003 second hand so I'm not 100% sure I've got all the component. I'm not sure about the insulator. I've got a small transparent plastic sheet with a hole in it. I read insulator can be made of silicone so I'm thinking it could be that but I'd rather be sure.

many thanks

Huntingdon 361 18th February 2011 02:52 PM

Quote:

Originally Posted by Baztien (Post 2473791)
Hoping this forum is still beeing read, here is my questions:
I'm trying to select a power supply for my K4003 and I've selected few transformer:
-Maplin N57JB
-Rapid electronics VTX-126-050-212
-RS 504-672

Is that the kind of transfo required? would you recommend any?

Last question: I bought my K4003 second hand so I'm not 100% sure I've got all the component. I'm not sure about the insulator. I've got a small transparent plastic sheet with a hole in it. I read insulator can be made of silicone so I'm thinking it could be that but I'd rather be sure.

many thanks

Any of those three transformers will be suitable.

It sounds like you have correctly identified the mounting insulator for the TDA2616.


All times are GMT. The time now is 06:50 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2