Switches when turn ON

Voltage level

S1, S4, S5, S8

V_dc

S5, S8

3V_dc/4

S1, S4

V_dc/4

No switches are ON

0

S3, S2

−V_dc/4

S5, S6

−3V_dc/4

S3, S2, S7, S6

−V_dc