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CTC210/211 Power Supply
The CTC210/211 standby power supply is a Zero Voltage switching (ZVS) power supply similar to that found in the MM10X and DTV chassis. When AC power is applied, Q601 starts to oscillate driving the standby x-former, which develops the standby voltages. Feedback for regulation comes from the +5Vs and controls Q601s switching. The longer Q601 is on, the more energy the standby x-former will transfer increasing the output voltage. Unlike the standby power supply, the run supply has a switched raw B+ that is controlled by the SysCon. Like the other ZVS power supplies, Q100 is the switch and functions the same as Q601 in the standby power supply. Feedback comes from the +68Vr and controls the on/off cycle of Q100.
+33Vs +15Vs
Q601
Stby Power Supply Xformer
+12Vs -12Vs +8Vs +5Vs -15Vr +5Vr +15Vr
Q100
Run Power Supply Xformer
+24Vr Audio Ret +31.5
AC IN
Rectifier Raw B+
Feed Back On/Off Feed Back
To System Control
+68Vr