SPDIF amplifier
in [Design]
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From: Dirk Bruere at NeoPax on 5 Mar 2007 18:18 martin griffith wrote: > On 5 Mar 2007 10:37:49 -0800, in sci.electronics.design "Dirk Bruere > at NeoPax" <dirk.bruere(a)gmail.com> wrote: > >> On 5 Mar, 16:17, martin griffith <mart_in_medina(a)ya___.es> wrote: >>> On 5 Mar 2007 06:54:08 -0800, in sci.electronics.design "Dirk Bruere >>> >>> at NeoPax" <dirk.bru...(a)gmail.com> wrote: >>>> On 5 Mar, 08:11, martin griffith <mart_in_medina(a)ya___.es> wrote: >>>>> Try Kramer, they do this sort of junk >>>>> for example:http://www.kramerelectronics.com/indexes/item.asp?desc=30 >>>>> martin >>>> Cheapest I can find is around $380 ie about 10x the price I can make >>>> the boards for myself. Additionally, they don't even have XLR >>>> connectors which I had budgeted for in my own design costing. >>>> Now you have definately convinced me to do my own :-( >>>> Maybe I'll offer the board for sale as well. >>>> Dirk >>> Are you going to reclock, etc? >>> and what was the price of the Kramer? Nothing on the site, >>> that i could find >>> >>> martin >> The $380 was the cheapest I could find for the Kramer. >> And yes, I will be reclocking since the other ends feed into DSP based >> systems. >> I'm resigned to the fact that I won't find what I want at a reasonable >> price. >> I've sketched up a design based on what I wrote above and will >> breadboard it this week. If it's OK I'll do a cheapo layout and get a >> oneoff PCB manufactured with XLR connector positions etc. Probably >> take me the best part of a week altogether, but since we will >> eventually need around 100 it looks like it will save us some $30,000 >> over the next year. >> >> Dirk > And Kramer is the bottom of the food chain..... 380$, ouch > Are you using the CS8406/CS8416 to re clock, or something more > sophisticated? It will be feeding into SHARC based equipment that will do the reclocking along with a whole bunch of stuff. > If you are using transformers, it may be cheaper to wind your own, > more info on epanorama, the commercial ones seem to be a rip off I can get them for around $5 each, one off. Here's an expensive version: http://www.maplin.co.uk/Module.aspx?ModuleNo=46790&criteria=transformer&doy=5m3 -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com
From: martin griffith on 5 Mar 2007 18:26 On Mon, 05 Mar 2007 23:18:42 +0000, in sci.electronics.design Dirk Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >martin griffith wrote: burp/belch/fart and inwardly digested >> And Kramer is the bottom of the food chain..... 380$, ouch >> Are you using the CS8406/CS8416 to re clock, or something more >> sophisticated? > >It will be feeding into SHARC based equipment that will do the >reclocking along with a whole bunch of stuff. > >> If you are using transformers, it may be cheaper to wind your own, >> more info on epanorama, the commercial ones seem to be a rip off > >I can get them for around $5 each, one off. >Here's an expensive version: >http://www.maplin.co.uk/Module.aspx?ModuleNo=46790&criteria=transformer&doy=5m3 T. Giesberts from Elektor Electronics magazine July/August 1995 pages 78-79. The transformer T1 is made to G2.3-FT12 ferrite ring core. Primary coil is 15 turns of 0.5 mm diameter enamelled copper wire and secondary is 3 turns of 0.5 mm diameter enamelled copper wire. your local transformer dude could save you a some. (stolen from http://www.epanorama.net/documents/audio/spdif.html ) martin
From: Dirk Bruere at NeoPax on 5 Mar 2007 19:36 martin griffith wrote: > On Mon, 05 Mar 2007 23:18:42 +0000, in sci.electronics.design Dirk > Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: > >> martin griffith wrote: > burp/belch/fart and inwardly digested >>> And Kramer is the bottom of the food chain..... 380$, ouch >>> Are you using the CS8406/CS8416 to re clock, or something more >>> sophisticated? >> It will be feeding into SHARC based equipment that will do the >> reclocking along with a whole bunch of stuff. >> >>> If you are using transformers, it may be cheaper to wind your own, >>> more info on epanorama, the commercial ones seem to be a rip off >> I can get them for around $5 each, one off. >> Here's an expensive version: >> http://www.maplin.co.uk/Module.aspx?ModuleNo=46790&criteria=transformer&doy=5m3 > > T. Giesberts from Elektor Electronics magazine July/August 1995 pages > 78-79. The transformer T1 is made to G2.3-FT12 ferrite ring core. > Primary coil is 15 turns of 0.5 mm diameter enamelled copper wire and > secondary is 3 turns of 0.5 mm diameter enamelled copper wire. > > your local transformer dude could save you a some. > > (stolen from http://www.epanorama.net/documents/audio/spdif.html ) I've looked at those circuits and don't feel too happy about feeding a signal that could only be 0.2V (or even less?) into an HCU04 -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com
From: martin griffith on 6 Mar 2007 03:25 On Tue, 06 Mar 2007 00:36:35 +0000, in sci.electronics.design Dirk Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >martin griffith wrote: >> On Mon, 05 Mar 2007 23:18:42 +0000, in sci.electronics.design Dirk >> Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >> >>> martin griffith wrote: >> burp/belch/fart and inwardly digested >>>> And Kramer is the bottom of the food chain..... 380$, ouch >>>> Are you using the CS8406/CS8416 to re clock, or something more >>>> sophisticated? >>> It will be feeding into SHARC based equipment that will do the >>> reclocking along with a whole bunch of stuff. >>> >>>> If you are using transformers, it may be cheaper to wind your own, >>>> more info on epanorama, the commercial ones seem to be a rip off >>> I can get them for around $5 each, one off. >>> Here's an expensive version: >>> http://www.maplin.co.uk/Module.aspx?ModuleNo=46790&criteria=transformer&doy=5m3 >> >> T. Giesberts from Elektor Electronics magazine July/August 1995 pages >> 78-79. The transformer T1 is made to G2.3-FT12 ferrite ring core. >> Primary coil is 15 turns of 0.5 mm diameter enamelled copper wire and >> secondary is 3 turns of 0.5 mm diameter enamelled copper wire. >> >> your local transformer dude could save you a some. >> >> (stolen from http://www.epanorama.net/documents/audio/spdif.html ) > >I've looked at those circuits and don't feel too happy about feeding a >signal that could only be 0.2V (or even less?) into an HCU04 Yabut... they/he uses the 04 in a linear mode, note the feedback resistors martin
From: Dirk Bruere at NeoPax on 6 Mar 2007 07:56
martin griffith wrote: > On Tue, 06 Mar 2007 00:36:35 +0000, in sci.electronics.design Dirk > Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: > >> martin griffith wrote: >>> On Mon, 05 Mar 2007 23:18:42 +0000, in sci.electronics.design Dirk >>> Bruere at NeoPax <dirk.bruere(a)gmail.com> wrote: >>> >>>> martin griffith wrote: >>> burp/belch/fart and inwardly digested >>>>> And Kramer is the bottom of the food chain..... 380$, ouch >>>>> Are you using the CS8406/CS8416 to re clock, or something more >>>>> sophisticated? >>>> It will be feeding into SHARC based equipment that will do the >>>> reclocking along with a whole bunch of stuff. >>>> >>>>> If you are using transformers, it may be cheaper to wind your own, >>>>> more info on epanorama, the commercial ones seem to be a rip off >>>> I can get them for around $5 each, one off. >>>> Here's an expensive version: >>>> http://www.maplin.co.uk/Module.aspx?ModuleNo=46790&criteria=transformer&doy=5m3 >>> T. Giesberts from Elektor Electronics magazine July/August 1995 pages >>> 78-79. The transformer T1 is made to G2.3-FT12 ferrite ring core. >>> Primary coil is 15 turns of 0.5 mm diameter enamelled copper wire and >>> secondary is 3 turns of 0.5 mm diameter enamelled copper wire. >>> >>> your local transformer dude could save you a some. >>> >>> (stolen from http://www.epanorama.net/documents/audio/spdif.html ) >> I've looked at those circuits and don't feel too happy about feeding a >> signal that could only be 0.2V (or even less?) into an HCU04 > > Yabut... they/he uses the 04 in a linear mode, note the feedback > resistors I don't know enough about how the device is specced (from all manufacturers) to be confident it would work as a manufacturing solution. -- Dirk http://www.onetribe.me.uk - The UK's only occult talk show Presented by Dirk Bruere and Marc Power on ResonanceFM 104.4 http://www.resonancefm.com |