I'm wiring my 4 channel 8 parallel LM4780 boards... check my wiring :)

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
A

Audiophilenoob

Member
2005-05-07 6:10 am
NC
www.soundsolutionsaudio.com
Namely I need help in making sure I'm doing just 3 things correct... I have the BrianGT boards

I have all the resistors for output matching etc etc


3 questions.... any thing helpful would be great


1. The OG from each board (in pairs of 2 paralleled per channel) is the Output ground so I assume I parallel these to the - terminal of the output banana jacks?

2. The AC1 and AC2 one has a line over it the other doesn't... I'm assuming the line over it means neutral correct?


MOST IMPORTANT QUESTION:

3. I have a transformer with dual primaries and secondaries... I understand perfectly that the dual secondaries are split to each board etc (one for the AC1 other for the AC2) ... but with dual primaries to I need to hook both primaries to the 115V AC? or will just one suffice? they can both be on the same AC jack correct?


thanks in advance :)

I'll post pics of this in a few hrs
 
A

Audiophilenoob

Member
2005-05-07 6:10 am
NC
www.soundsolutionsaudio.com
maf_au said:
This might help. Have a look about P17

http://www.chipamp.com/nigc_kit-users_guide.pdf

Michael
Click to expand...



I've read that... about 20 times... they don't ever go into the line over the AC.. cause on the other boards it actually says H and N (hot and neutral)

also it talks nothing about dual primaries and how to wire that up properly...

thanks though
 
M

maf_au

Member
2005-06-27 3:16 am
Adelaide
Hmm.

Well, one thing you could do would be to connect one of the primaries and see what the secondary voltages look like.

I would think that you need to connect both primaries though, but I'm no expert. What does the transformer datasheet say?

Personally, I wouldn't tinker with it until you know the facts, mains voltage is dangerous...
 
A

Audiophilenoob

Member
2005-05-07 6:10 am
NC
www.soundsolutionsaudio.com
maf_au said:
Hmm.

Well, one thing you could do would be to connect one of the primaries and see what the secondary voltages look like.

I would think that you need to connect both primaries though, but I'm no expert. What does the transformer datasheet say?

Personally, I wouldn't tinker with it until you know the facts, mains voltage is dangerous...
Click to expand...



I don't have a xfrmr sheet... there's just a diagram of the wiring

I'm assuming both need to be hooked up
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom