Sindoh M612 - View and Important Functins of LVPS

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5
OR_1
Signal connected to 6th pin
6
OT_2
Signal connected to 5th pin
7
T_2
TIP signal
8
R_2
RING signal
9
OR_2
Signal connected to 2nd pin
View and Important Function of LVPS
Block Diagram
Components and Basic Functions
The basic components of LVPS and each function are as the following.
1. AC switch : Open only one AC line(1-POLE type)
2. Varistor : When overvoltage inflows in the input section, it is shorted to protect the
rear circuit section.
3. BRIDGE DIODE / MAIN CAP : Rectify waveform to make DC.
4. Noise filter : Prevent noise inflow to the input section
5. Photocoupler : Perform FEEDBACK to maintain output static voltage.
6. Phototriac : Control the heater ON/OFF in the machine.
7. Fuse(1st,2nd) : When overcurrent inflows, protect the circuit in the rear section.