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PS350 (page 11/11)
The PS350 (page 11/11) is similar to the other two,
but it has a voltage quadrupler made up of C1, C2,
C3, C4, D1, D2, D3 and D4. Switch SW1 acts the
same and R9 is again the current sense resistor.
The voltage sense circuit is made up of R2 and R3.
C5 provides some additional phase compensation.
Finally the output filter is set up for higher voltage
and lower current.