Regulator Design v1.3

[Nazar_lv]

This is my old program that can help calculate many voltage and current regulators.

Allows to calculate:
* LM317 (LM150 , LM350) voltage regulator
* LM317 (LM150 , LM350) current regulator
* L200 voltage and/or current regulator
* TL431 precision shunt regulator
* TL431 precision shunt regulator (with LM317)
* M5237 3-terminal adjustable regulator
* 78xx series voltage regulator
* 78xx series current regulator
* uA723 precision voltage and/or current regulator

Download (109Kb)

[Jen-B]

That is an interesting site Nazar_lv.

(However for some reason I can not open the pictures, such as the regulator on page ??????? High-end ????????? ??? ?????????? ????????????. Maybe it is a problem with my computer).

[Nazar_lv]

That is an interesting site Nazar_lv.

It is my blog

(However for some reason I can not open the pictures, such as the regulator on page ??????? High-end ????????? ??? ?????????? ????????????. Maybe it is a problem with my computer).

or with you browser, this is page about "electronic capacitor", it is global negative feedback free electronic substitutes, that has a stable impedance 0,1...0,2Ohm (equivalent capacity 40000u) in the band to megahertz shunting NP0 0,1 microfarads Murata GRM31 in close to chips. This structure provides in a comparison with the best series audio electrolytic capacitors (Nichicon KZ, FG, Black Gate FK,NX, Elna Cerafine, Silmic II, Silmic) significantly better results. I use it in my DACs Picardian chord v1.0, Picardian chord v1.2 and Overture v3.0

[piero7]

Great!!! Thanks!

[stormsonic]

Originally Posted by Nazar_lv

or with you browser, this is page about "electronic capacitor", it is global negative feedback free electronic substitutes, that has a stable impedance 0,1...0,2Ohm (equivalent capacity 40000u) in the band to megahertz shunting NP0 0,1 microfarads Murata GRM31 in close to chips.

you can call it shunt reg. Very simple and only for small currents

[Nazar_lv]

you can call it shunt reg.

It is not a regulator (right side of the circuit), it is a follower, for low and stable(it is important) output resistance. it completely detach regulator (317\337) from load, therefore we have the ideal transient response when load "changes", and dont have noise and output resistance modulation.

Very simple and only for small currents

Yes, it is ideal for max 0.2...0.3A (DACs, phono preams etc)

[stormsonic]

I meant whole circuit as regulator (LM317 is regulating).
Right side from LM317 is VT1 acting as follower and VT2 as shunt element.

I fail to see how is LM317 completely detached from load? By R2 resistor?

200, 300 mA....at 5V, without load...only with heatsinks

Negative circuit and output capacitors deleted for better understanding

[Nazar_lv]

Right side from LM317 is VT1 acting as follower and VT2 as shunt element.

VT1+VT2+R5 forms superbeta transistor (Shiklai)

I fail to see how is LM317 completely detached from load? By R2 resistor?

R2+VT1+VT2

200, 300 mA....at 5V, without load...only with heatsinks

if no load there is no reason to supply this load

Negative circuit and output capacitors deleted for better understanding

output capacitors 0.1-10u SMD NP0/X7R is needed for HF bypass (>1Mhz), caps on 317/337 out (not less than 1u) is needed for 317/337 stability

...(it is important) output resistance...

...have noise and output resistance modulation...

right word should be impedance

[Jen-B]

I like this circuit. Maybe it would be intersting to try it with R2 replaced with constant current diode?

[Nazar_lv]

I like this circuit.

Try it and you forget all audiophiles electrolytic capacitors

Maybe it would be intersting to try it with R2 replaced with constant current diode?

No

This formulas helps you calculate this design

R4=240*(Uout-Ueb) / 1.25
R2=(1,25-Ueb) / (0.3/Uout)+Iload
where Uout-output voltage V, Ueb-emitter-base voltage VT1, VT4 V, Iload- load current А.