K4003 - How do I power it?

Kits Audio Hi Fi Projects
1

Can anyone tell me very simply how to power this from mains?

I mean whats the simplist way? Would this work?

store.qkits.com/moreinfo.cfm/PS1220

Or if I HAD to use one of those internal transformers how would it all hook up?

Say I buy a 12V 50VA chassis mounting mains transformer. I wire that up to the PCB, then I can wire up a DC input jack so it looks like:

Amp PCB > Transformer > DC input jack

What type of mains plug would I use to feed into the DC input jack because they are all transformers anyway right?

Any help is appreciated! Pictures and links would be useful :smiley:

2

This kit needs a SYMMETRIC supply.
Please check the manual. It features 3 very clear drawings on how to hook up a power supply. It does not work with a single supply wall adaptor.

3

[quote=“VEL417”]This kit needs a SYMMETRIC supply.
Please check the manual. It features 3 very clear drawings on how to hook up a power supply. It does not work with a single supply wall adaptor.[/quote]

Ok so I must use a transformer but that does not answer this part of my question:

[quote=“myspacer00”]Amp PCB > Transformer > DC input jack

What type of mains plug would I use to feed into the DC input jack because they are all transformers anyway right? [/quote]

Thanks!

4

If you insist to use a DC jack (not recommended) then you will have to look for a 3-pin jack (very hard to find). Inserting or removing the jack while the power is on can cause the amp to fail, therefore we recommend fixed wiring.

5

Ok, so I will not use a DC jack. I will wire it directly but to do this (bear in mind I am from the UK) should I just use a standard 3 pin plug and wire up the Live, Neutral and Earth to the transfomer?

6

Yes, but transformers do not feature an earth lead.
If you use a metal enclosure, ground the enclosure.

7

Hi again.

Is this the correct way to wire the transformer up?

8

If the information you supply is correct, we assume that this will work.
Do not connect the earth to the gnd.