NTE7135 Ver la hoja de datos (PDF) - NTE Electronics

Número de pieza

componentes Descripción

Fabricante

NTE7135

Integrated Circuit Vertical Deflection Power Amplifier for Monitors

NTE Electronics 

Functional Description (Cont’d):

Vertical Output

The vertical output stage is a quasi–complementary class–B amplifier with a high linearity. The output

contains SOAR (short–circuit protection) and thermal protection. Tne output current on Pin5 is re-

duced for a short time (to let the temperature decrease to TJ < +150°C), when the junction temperature

(TJ) exceeds +160°C.

Deflection GUARD

Pin9 will go HIGH if the junction temperature goes to high. A pulse signal with 50% duty cycle is output

on Pin9, if the deflection coil is open–circuit. A flyback pulse signal is output at normal conditions.

Further watching can be achieved by means of an external GUARD circuit. The 22µF capacitor is

charged during flyback time (V5 > V8) at normal conditions. In case of failures, the capacitor is dis-

charged and the GUARD output goes HIGH.

GUARD output level:

D LOW for normal conditions

D HIGH for deflection coil short–circuit respectively open–circuit

D HIGH when there are neither input or output signals

Pin Connection Diagram

(Front View)

9 Pulse Circuit Output

8 VP3 (Flyback)

7 Flyback Generator Output

6 Substrate

5 Vertical Output

4 VP2 (Vertical Output Stage)

3 Differential Input Amp Input 2

2 Differential Input Amp Input 1

1 VP1

Share Link: