Daewoo PF2720 Service Manual page 16

TDA8350 (N401)
DC-coupled Vertical Deflection and East-West Output Circuit
1. Features
・ Few external components
・ Highly efficient fully DC-coupled vertical output
bridge circuit
・ Vertical flyback switch
・ Guard circuit
・ Protection against：
-short-circuit of the output pins
-short-circuit of the output pins to Vp
3. Block Diagram
4. Refer to Table 5 about Functions and Service Data of TDA8350Q's Pins.
SERVICE MANUAL
V
P
+V
P
I
drive(pos)
I
drive(neg)
I
I(set)
I
I(set)
I
I(corr)
・ High EMC immunity due to common mode
inputs
・ Temperature (thermal) protection
・ East-West output stage with one single
conversion resistor.
2. General Description
The TDA8350Q is a power circuit for use
in 90° and 110° colour deflection systems
for field frequencies of 50 to 120 Hz. The
circuit provides a DC driven vertical
deflection output circuit, operating as a
highly efficient class G system and an
East-West driver for sinking the diode
modulator current.
V V
O(guard) FB
Fig. 8
14
V
O(A)
+V
O(A)
V
I(FB)
V
P
V
O(B)
-V
O(B)
V
O(SINK)