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-   -   +-85volt regulator (http://www.diyaudio.com/forums/power-supplies/229810-85volt-regulator.html)

back 11th February 2013 01:03 PM

+-85volt regulator
 
hello everybody.i want to regulate +-85volt for a lme49810.any regulators working that high voltage especially the negative?

jackinnj 11th February 2013 01:25 PM

This is a variant of the "Two Transistor Regulator". Change the value of the voltage reference to a 1N4754 and the output will be 2x the zener breakdown voltage.

http://www.tech-diy.com/RegPowerSupp...sistor_Reg.gif

You can also use the LM317/LM337 in the Maida configuration.

back 11th February 2013 02:03 PM

nice and simple. maida configuration?where can i find it?

jackinnj 11th February 2013 02:31 PM

http://www.ti.com/lit/an/snoa648/snoa648.pdf

back 11th February 2013 03:53 PM

Quote:

Originally Posted by jackinnj (http://www.diyaudio.com/forums/power-supplies/229810-85volt-regulator-post3365449.html#post3365449)

thanks

JMFahey 11th February 2013 04:48 PM

Just curious: what *is* an "LME89910"?
Mr google has no clue.
Not even one.

And why does it need +/-85V supplies?

theAnonymous1 11th February 2013 04:56 PM

LME49810???

counter culture 11th February 2013 05:04 PM

For currents <20mA up to 450V you can use this:-

http://www.supertex.com/pdf/datasheets/LR8.pdf

If you live in Europe (and maybe elsewhere if you pay the postage) you can order them here:-

Tube-Town Online-Store - Spannungsregler

...better to add them to a bigger order as post is ~10Euros.

back 11th February 2013 05:05 PM

ooops a typo yes lme49810 only needs 10ma.

jackinnj 11th February 2013 05:38 PM

LME8910 PSRR is 110dB -- you probably don't need a regulator.


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