Horizontal Drive And Power Supply Output - NEC MultiSync FE700 Serviceanleitung

6. Horizontal drive and power supply output

Circuit Diagram
Description of the circuit:
1) R1, T1 and Q2 compose the horizontal driving circuit, and the transistor Q1 generates a horizontal
output through the driving signal.
I
B1
I ≒ ≒ ≒ ≒ 3I
B2
di/dt≒ ≒ ≒ ≒ 3.3A/us
2) The resistor R2 corrects the current I
and the diode D2 works as a discharging device and polar body.
As long as the transistor Q1 is OFF, the discharge is accelerated and the storage time(Tstg) is shorted.
3) H-OUT circuit waveform
= I /Q1h
CPMAX feMIN
B1
, the resistor R3 works as a damping resistor and leak resistor,
B1
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