I am attempting to build a mixing console. Have a couple of small circuits so far. I have a Behringer Eurodesk Power supply. It has bipolar 18volt output. It apears to be very lame. Transformer. a couple of caps and some regulators. On the other hand, I have an Old Allen and Heath Mixeing console that also has an external Power Supply. It is bipolar 15Volts. The cicuitry in that appears to be quite a bit more involved. I am not sure if it is the age difference or that the Allen and Heath is superior.
I am not sure whether to use the Behringer Power Supply or build one. If I Build one, should it be 15V or 18. It seems that the Burr Brown ICs require 18V and the Analog Devices ICs are rated 15V Max.
Any help is greatly appreciated
I am not sure whether to use the Behringer Power Supply or build one. If I Build one, should it be 15V or 18. It seems that the Burr Brown ICs require 18V and the Analog Devices ICs are rated 15V Max.
Any help is greatly appreciated
power supply
Do you mean regulate all circuits or send 18v to Burr Brown eg😀RV134 and then reduce it to 15V for analog devices IC?
Do you mean regulate all circuits or send 18v to Burr Brown eg😀RV134 and then reduce it to 15V for analog devices IC?
Hi,
to maximise headroom at each chip you should run the maximum supply voltage to each chip type. But this will complicate your layout. Assess the existing layout and decide if two voltage supply is feasible. The alternatives are;- run all from the lower voltage or change chips to the higher voltage, some run on 21v supplies. It depends on your output needs and the gains in the intermediate stages.
to maximise headroom at each chip you should run the maximum supply voltage to each chip type. But this will complicate your layout. Assess the existing layout and decide if two voltage supply is feasible. The alternatives are;- run all from the lower voltage or change chips to the higher voltage, some run on 21v supplies. It depends on your output needs and the gains in the intermediate stages.
Do you mean to say that the Burr Brown chips you want to use won't work on less than 18v? If so, I would be interested in the chip number so I can look at the data sheet.
Hello,... start with reading the datasheets about the IC's mind.
What can you read?
Conclusion +- 15 volt will in most applications.... but.... some Analog Devices opamps will work on max +- 13 volts. This is not really a problem.
Regulate from 18 to 15 volts is on the edge in many cases but down to 12 volts will be no problem at all.
Can't you change the 18 volts from your PS? I'm pretty sure you can fix this rather easily.
What can you read?
Conclusion +- 15 volt will in most applications.... but.... some Analog Devices opamps will work on max +- 13 volts. This is not really a problem.
Regulate from 18 to 15 volts is on the edge in many cases but down to 12 volts will be no problem at all.
Can't you change the 18 volts from your PS? I'm pretty sure you can fix this rather easily.
Hi again,
+- 15v is sufficient for European headroom. +-18v is sometimes required for US headroom, assuming professional studio levels.
Best use the DRV134 in +2 gain mode.
Cheers,
+- 15v is sufficient for European headroom. +-18v is sometimes required for US headroom, assuming professional studio levels.
Best use the DRV134 in +2 gain mode.
Cheers,
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