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gonzofonts
Copper Member
11 Posts |
 Posted - 11/15/2007 : 02:44:39
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Enjoy...
GF
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pedals 4 pv
Platinum Member
Canada
1351 Posts |
Posted - 11/15/2007 : 02:49:32
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Cool Welcome to the forum gonzofonts usually first posts are questions, it's good to see an answer. |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 11/15/2007 : 04:39:19
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Wow, thanks a bunch
wouldn't have the ph-1 or 1r schems too? |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 11/15/2007 : 06:43:25
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Thanks, & Welcome to the forum.
You get my "Most useful posting of the week" award.
Regards Dr. Bob |
Edited by - Dr. Bob on 11/15/2007 10:54:12 |
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DeFrag
Moderator
USA
3409 Posts |
Posted - 11/15/2007 : 06:51:26
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Welcome gonzofonts! Tks for the schem  |
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albertprio
Copper Member
Indonesia
16 Posts |
Posted - 11/15/2007 : 08:33:21
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quote:
Originally posted by gonzofonts
Enjoy...
GF
Gonzo cool man.Thanks a lot.really cool |
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albertprio
Copper Member
Indonesia
16 Posts |
Posted - 11/15/2007 : 08:39:27
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Dr.Bob,what is the function of IC NE571 in my case?
Thanks |
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Potter V8
Bronze Member
Brazil
106 Posts |
Posted - 11/15/2007 : 10:29:07
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Hi Albert and welcome from Brazil !!!
Potter V8 |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 11/15/2007 : 10:49:29
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quote:
Originally posted by albertprio
Dr.Bob,what is the function of IC NE571 in my case?
Thanks
Hi albertprio and Guys
The NE571 is a compressor - expander (Compander)
Boss use this in a few of their pedals.
extract from data sheet.
INTEGRATED CIRCUITS SA571 Compandor Product specification IC17 Data Handbook 1997 Aug 14 Philips Semiconductors Philips Semiconductors Product specification Compandor SA571 DESCRIPTION The SA571 is a versatile low cost dual gain control circuit in which either channel may be used as a dynamic range compressor or expandor. Each channel has a full-wave rectifier to detect the average value of the signal, a linerarized temperature-compensated variable gain cell, and an operational amplifier. The SA571 is well suited for use in cellular radio and radio communications systems, modems, telephone, and satellite broadcast/receive audio systems. PIN CONFIGURATION D, and N Packages1 RECT CAP 1 RECT IN 1 AG CELL IN 1 GND INV. IN 1 RES. R3 1 OUTPUT 1 THD TRIM 1 1 2 3 4 5 6 7 8 16 RECT CAP 2 15 RECT IN 2 14 AG CELL IN 2 13 VCC 12 INV. IN 2 11 RES. R3 2 FEATURES
If you really need the datasheet:
http://datasheet4u.com/html/N/E/5/NE571_PhilipsSemiconductors.pdf.html
Regards Dr. Bob
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Edited by - Dr. Bob on 11/15/2007 10:51:56 |
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gonzofonts
Copper Member
11 Posts |
Posted - 11/17/2007 : 02:36:01
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All,
Thanks for the welcome... but I am embarrassed to say that I did not realize that it was my first post.  
Also, sorry for the late reply. I was out of town for the last day and a half or so.
ChristoMephisto
Yes, I do have the Boss PH-1 schematic and some additional documentation. Sorry, I do not have a Boss PH-1r schematic.
Unfortunately, the Boss PH-1 files are in PDF format and photobucket only allows images.
If someone can recommend a site where I upload various files (pdf, images, etc), I would be glad to do so.
Thanks.
GF
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 11/17/2007 : 06:55:07
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quote:
Originally posted by gonzofonts
All,
Thanks for the welcome... but I am embarrassed to say that I did not realize that it was my first post.
Also, sorry for the late reply. I was out of town for the last day and a half or so.
ChristoMephisto
Yes, I do have the Boss PH-1 schematic and some additional documentation. Sorry, I do not have a Boss PH-1r schematic.
Unfortunately, the Boss PH-1 files are in PDF format and photobucket only allows images.
If someone can recommend a site where I upload various files (pdf, images, etc), I would be glad to do so.
Thanks.
GF
Hi gonzofonts
you can upload images on this forum.
You can also upload or send the PDF's to Bossarea here & he will put them into one of the sticky threads.
Or you can PM them to the individual member.
Thanks again for sharing your data & schematics, with the rest of us.
Regards Dr. Bob |
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gonzofonts
Copper Member
11 Posts |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 11/19/2007 : 00:12:18
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| Thanks for the PH1 schems, shouldn't be that hard to work out the Resonance section if I need to |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 11/19/2007 : 15:48:56
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Hi gonzofonts
Thanks for the Files,
but they seem to be a bit tricky to download from that host?
Regards Dr. Bob |
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gonzofonts
Copper Member
11 Posts |
Posted - 11/20/2007 : 06:04:09
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Dr. Bob,
What issues are you having? Can you please explain?
GF |
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Topic |
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Hello everybody?and I need help
