Integration shunt regulator voltage

[Jameson]

When checking the voltages on the shunt regulator, I get 106 on the A side MJE5731 and 108 on the B side. The manual says it should be 110 and 120. Any issues, or is this tolerable? Terminal 56 was 131.

 

[Paul Birkeland]

The voltage on 56 being 131 tells us that the current sources are doing their jobs.  Zener voltage tolerance can be pretty variable, so I would go ahead and proceed.

-PB

 

[Jameson]

Thanks, Paul. My kit was missing a pair of resistors for the C4S boards, so I'll run it with just the shunt regulator for now.

 

[Jameson]

Everything's in and working well (many thanks to Eileen for shipping my missing resistors so quickly!). The voltage at terminal 31 was 61 VDC, but I think I read in a different thread that this isn't a huge issue. Overall it sounds excellent; the increase in gain was immediately obvious. More listening to come...