Hello here is the draft schematics revision of 4,66 , 7V and 10V
Few requirements
Long term stable 6,9...7.1 Vout
4,6V short term stability and lower noise
10V - the most lose specified - I dont know do I really need. It was just available by the bootstrap circuit.
Opamps are still not specified. I will build at least two boards + one for test. I will try different opamps.
The board wil be in separated case - Bigger case will contain Vref + R reference cases. Resistors are almost ready. I still waiting for final cure of the sealant. I wil post some pictures later on. Four selected Vishay foil resistors + NTC+PT100 are submerged in silicone oil bath.
Comments and remarks are welcome. I'm sure there are many mistake at this stage. Keep in mind that I'm beginner in CAD systems. Last time I did it ~30 years ago when I was junior engineer
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BR,
Miro