Yes. Put a CL140 on the CT of the power transformer's HV winding. All SSE boards since 2010 have pads for this (TR1). I often add one to my other builds, especially if they are power hungry.
You can add a CL90 in series with the line voltage input to soften the heater current surge if desired.
You can add a CL90 in series with the line voltage input to soften the heater current surge if desired.
I've already put a CL80 in series with line V. It dropped the the VDC at R30from 340 to 320. This is with a 47uf cap. The CL140 adds little or no drop in VDC at the B+ center tap, though. I'm pretty good with the 320 V, but if I want to drop more,I'll lower the value of C4. I've noticed a popping out of the left speaker, more like a pop-pop after a couple of hours of running. Just one pop-pop and then it's gone for a while but will come back. I've isolated to the one left channel by switching speaker wires. Maybe a coupling cap?
Is there anything provided by Elfa Distralec that can be used as an equivalent for CL-90 and CL-140? They do not seem to have anything in their range of thermistors, and was wondering if I was looking for the wrong thing. It feels like it is too important a component to not have as part of their stock.
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