Daewoo DWP-28W2ZZF Service Manual download pdf (Page 41)

Appendix Service manual WP-795

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Block diagram TDA8944J

1-4 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.

1-4-1 TDA8357J

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

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Daewoo DWP-28W2ZZF Service Manual Page 41