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CP-850/F Service Manual
4.7 TDA835XJ VERTICAL AMPLIFIER
The TDA835xJ are power circuit for use in 90 and 110 colour deflection systems for field frequencies of 25 to 200Hz
and 16/9 picture tubes. The circuit provides a DC driven vertical deflection output circuit, operating as a highly efficient
class G system. Due to the full bridge output circuit the deflection coils can be DC coupled.
The IC is constructed in a Low Voltage DMOS process that combines Bipolar, CMOS and DMOS devices. MOS
transistors are used in the output stage because of the absence of second breakdown.
4.7.1 TDA8358J
An East-West output stage is provided that is able to sink current from the diode modulator circuit.
Features :
Few external components
Highly efficient fully DC-coupled vertical output bridge circuit
Short rise and fall time of the vertical flyback switch
Guard circuit
Temperature (thermal) protection
High EMC because of common mode inputs
East-West output stage
V CC1
3
8
IN1-
6
IN1+
TDA8946J
9
IN2-
12
IN2+
STANDBY/
10
MODE
MUTE LOGIC
11
SVR
Block Diagram TDA8946J
V CC2
16
1
4
17
14
V CC
SHORT CIRCUIT
AND
TEMPERATURE
PROTECTION
2
15
MBK933
GND1
GND2
-38-
OUT1-
OUT1+
OUT2-
OUT2+
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