Search found 4 matches

by sleeper
Tue Feb 08, 2011 4:29 pm
Forum: JLM Audio Kits
Topic: VUPPMGR40v2 kit (40 Led PPM/VU/GR Meter kit) BUILD THREAD
Replies: 60
Views: 122068

Re: New 40 Led PPM/VU/GR Meter kit with Peak hold

Hi Joe, THis looks great, I'll be getting 2 soon, just have to sell some bits on Ebay first :roll:
You mentioned a perspex front panel for putting these neatly into a rack panel.
Did you make this? I'm going to be mounting 2 horizontally in a 1 space rack.
THought I'd ask.
Thanks
Sleeper
by sleeper
Tue Jun 22, 2010 10:45 am
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 150596

Re: BAN Build Thread

You cannot parellel IC1A as different DC offsets would overheat the opamps. If you clip of the 3 IC1A legs the rest of the opamp would do the inverted out but +out and -out would have different drive capabilities so not a good idea for electronic balanced out and no good for driving transformer I t...
by sleeper
Tue Jun 15, 2010 2:59 pm
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 150596

Re: BAN Build Thread

Two more questions and I think I have these up and running: ferrite/inductor I had some ferrite beads, fair-rite 2743002112L These measure out at around 15uH and they worked swell on some green-pre's that I made a while back... should be OK? And lastly I'm confused... so if I use a 2520 (or a 990) m...
by sleeper
Sun May 23, 2010 3:24 am
Forum: JLM Audio Kits
Topic: BAN Build Thread
Replies: 129
Views: 150596

Re: BAN Build Thread

Hi all,
I wanted to confirm something regarding note 1 on the schematic.
I'll be using 2520 op amps in my BAN
normally those need +-16v
so I will need to use the first BD681 and a 32V Zener
I don't see anything else.
It's really this simple?

Thanks
Sleeper

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