Toshiba 29V24E2, Service Manual

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STV5112
General Description:
The STV5112 includes three video amplifiers designed with a high voltage bipolar/CMOS/DMOS technology (BCD).
It drives directly the three cathodes and is protected against flashovers. Thanks to its three cathode current outputs,
the STV5112 can be used with both parallel and sequential sampling applications.
Bandwidth : 8MHz TYPICAL
Supply Voltage : 220V typical
Rise and fall time : 50ns typical
CRT cathode current outputs for parallel or sequential cut-off or drive adjustment
Flashover protection
Power dissipation : 3.6W
PINNING PIN VALUE
1. BLUE INPUT
2. VCC LOW VOLTAGE
3. GREEN INPUT
4. RED INPUT
5. VDD HIGH VOLTAGE
6. RED CATHODE CURRENT
7. RED OUTPUT
8. GROUND
9. RED FEEDBACK
10. GREEN OUTPUT
11. GREEN CATHODE CURRENT
12. GREEN FEEDBACK
13. BLUE OUTPUT
14. BLUE CATHODE
15. BLUE FEEDBACK
MC44608
General description:
The MC44608 is a high performance voltage-mode controller designed for off–line converters. This high voltage
circuit that integrates the start–up current source and the oscillator capacitor, requires few external components while
offering a high flexibility and reliability.The device also features a very high efficiency stand–by management consisting
of an effective Pulsed Mode operation. This technique enables the reduction of the stand–by power consumption to
approximately 1W while delivering 300mW in a 150W SMPS.
• Integrated start–up current source
• Loss less off–line start–up
• Direct off–line operation
• Fast start–up
General Features
• Flexibility
• Duty cycle control
• On chip oscillator switching frequency 40, or 75kHz
• Secondary control with few external components
Protections
• Maximum duty cycle limitation
• Cycle by cycle current limitation
• Demagnetization (Zero current detection) protection
• “Over VCC protection” against open loop
• Programmable low inertia over voltage protection against open loop
• Internal thermal protection
GreenLine Controller
• Pulsed mode techniques for a very high efficiency low power mode
• Lossless startup
• Low dV/dT for low EMI radiations
PINNING PIN VALUE
1. Demagnetization Zero cross detection voltage: 50-mV typ.
2. I Sense Over current protection voltage 1V typ.
3. Control Input Min: 7.5V Max.: 18V
4. Ground Iout 2A
p-p
during scan 1.2A
p-p
during flyback
5. Driver Output resistor 8.5 Ohm sink 15 Ohm source typ.
6. Supply voltage Max:16V (Operating range 6.6V-13V)
7. No connection
8. Line Voltage Min:50V Max:500V