JW
Well-known member
Tried sending to Rochey, but his inbox is full.
Just a quick embarrassing question. I have one of Expat's uber power supplies I bought from a forum member, powering 4 channels of S800 eq's.
Anyway, I want +/-18V to the eq's. I think they draw around 100mA or less each (So, X4)
The power transformer has 18V secondaries.
I'm trying to figure out the value of R1 and R2 which adjust the DC output voltages . Here's a link to the uber page with the excel calculator: http://expataudio.myshopify.com/products/uber-power-supply
Anyway, with the variables above, the calculator give me around 8 ohms. I've tried everything from 6.8ohm to 68 ohm and I'm not seeing any difference in the DC rail outputs (loaded or not, as a matter of fact) It's always outputting +/-18.2V. Which is almost perfect, but it's bugging me that they're a little high. I don't want to stress the chips in the long run.
Should I be going higher or lower?
Just a quick embarrassing question. I have one of Expat's uber power supplies I bought from a forum member, powering 4 channels of S800 eq's.
Anyway, I want +/-18V to the eq's. I think they draw around 100mA or less each (So, X4)
The power transformer has 18V secondaries.
I'm trying to figure out the value of R1 and R2 which adjust the DC output voltages . Here's a link to the uber page with the excel calculator: http://expataudio.myshopify.com/products/uber-power-supply
Anyway, with the variables above, the calculator give me around 8 ohms. I've tried everything from 6.8ohm to 68 ohm and I'm not seeing any difference in the DC rail outputs (loaded or not, as a matter of fact) It's always outputting +/-18.2V. Which is almost perfect, but it's bugging me that they're a little high. I don't want to stress the chips in the long run.
Should I be going higher or lower?