SSR02 fixed voltage, fine adjustement and DZ1 Qs

[Malefoda]

R15 is not on BOM nor picture, that may be where I'll get my way.

[peranders]

R15 is not used but I have it in my calculations (= GOhms).

[Malefoda]

10K 1% was 9.90, enough to drop what I needed ;)
Fixed!
Many thanks Per-Anders!

[peranders]

... and you have a calibrated multimeter?

My experience is that it's very rare to get resistors more than 0.3% wrong. Still if you want so exact output voltage you must also use a calibrated instrument.

[Malefoda]

Well I know my DMM, a good Chauvin & Arnoux, is out of tune. Maybe 15 years it has not been calibrated and it should be done.
You are right, to make good work use good tools, I'm on the ghetto mode...
Anyway I have a second pack of metal film resistors, but 1/8W only (it runs cold seems) and these 10K show between 10.01 and 9.98... all that 1/4W ones are around 0.992/0.996, all other resistors I have match the specs.
For me it's a bad batch :'(