Building your own voltage reference - the JVR

[Cerebus]

Hi Alex,

Is J2 used to start up the circuit? I'm assuming it pulls up the input of the op amp when power is applied, in order to generate a voltage to allow J1 to begin regulating.

Thanks in advance

Ha! You beat me to it. I was just about to type out the very same question.

[BNElecEng]

  you know what they say about great minds

[iainwhite]

Here is the latest schematics (for the unit running for 2 years now).

I appreciate you making this available - Thank you.

[Cerebus]

  you know what they say about great minds

Yeah, and also, sadly, about fools. 

[vindoline]

Here is the latest schematics (for the unit running for 2 years now). R1 is selected for the zero tempco point, R5 and R6 for 10V output.

Cheers

Alex

Hi Alex, thanks for posting your schematic. I'm thinking of building one up and I have a question. R3 on the output is marked "k12" I'm assuming this is a typo and it should be 1k2? Thanks!

[Alex Nikitin]

Hi Alex, thanks for posting your schematic. I'm thinking of building one up and I have a question. R3 on the output is marked "k12" I'm assuming this is a typo and it should be 1k2? Thanks!

R3 is 120 Ohm .

Cheers

Alex