Have this schematic for a Heater Control. Please direct me to an explanation for (R1 + C1/C2) and (R2 + C3). I cannot find any online papers about how to implement phase-angle control. I can only find lots of explanations as to what it is.
Specifically, I want to know how would I modify them for a different frequency or voltage input? Would they need to be changed for a different output transformer? Would they need to be changed based on the expected phase angle usage (say 50-80% power; not up to 100%)? Are they a good replacement for a snubber that is only across the SCRs?
I have looked online for controllers to purchase, but they are all 50-60Hz at >8A output and their OEMs declare they will not work on 400Hz.
And a follow on question: this particular "external transformer" is long obsolete. Do you know of a current (haha) manufacturer of similar transformers?
I much appreciate your help!
Specifically, I want to know how would I modify them for a different frequency or voltage input? Would they need to be changed for a different output transformer? Would they need to be changed based on the expected phase angle usage (say 50-80% power; not up to 100%)? Are they a good replacement for a snubber that is only across the SCRs?
I have looked online for controllers to purchase, but they are all 50-60Hz at >8A output and their OEMs declare they will not work on 400Hz.
And a follow on question: this particular "external transformer" is long obsolete. Do you know of a current (haha) manufacturer of similar transformers?
I much appreciate your help!
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