7.
VERTICAL OUTPUT STAGE WITH STV 9379
The IC TDA9379FA is the vertical deflection booster circuit. Two supply voltages, +12V and –12V are
needed to scan the inputs VERT+ and VERT-, respectively. And a third supply voltage, +45V for the
flyback limiting are needed. The vertical deflection coil is connected in series between the output and
feedback to the input.
8.
VIDEO OUTPUT AMPLIFIER TDA6108
The TDA6107/08Q includes three video output amplifiers in a SIL 9 MP (Single in Line 9 pins Medium Power)
package SOT111BE, using high-voltage DMOS technology, and is intended to drive the three cathodes of a colour
picture tube.
In contrast to previous types of DMOS video amplifiers, all external resistors (Rf, Ri and Ra) are integrated, so the
gain is fixed.
To obtain maximum performance, the amplifier should be used with black-current control and mounted on the
CRT panel.
9.
COMBFILTER TDA 9181
The TDA 9181 is an adaptive PAL/NTSC comb filter with two internal delay lines, filters, clock
control, and input clamps. Video standards PAL B, G, H, I, M and N NTSC M are supported.
Two CVBS input signals can be selected by means of input switch.
In addition to the comb filter the circuit contains an output switch so that a selection can be made between the
combed CVBS signal and an external Y/C signal.
The supply voltage is 5V.
10.
POWER SUPPLY (SMPS)
The DC voltages required at various parts of the chassis are provided by an SMPS transformer controlled by the IC
MC44608, which is designed for driving, controlling and protecting switching transistor of SMPS. The transformer
produces 150V for FBT input, ? 14V for audio output IC, S+3.3, S+5V and 8V for TDA8885.
11.
POWER FACTOR CORRECTION
The MC33260 is a controller for Power Factor Correction pre-converters meeting international
standard requirements in electronic ballast and off–line power conversion applications. Designed to
drive a free frequency discontinuous mode, it can also be synchronised and in any case, it features very
effective protections that ensure a safe and reliable operation.
12.
MICROCONTROLLER SDA555X
12.1.
General Features
• Feature selection via special function register
• Simultaneous reception of TTX, VPS, PDC, and WSS (line 23)
• Supply Voltage 2.5 and 3.3 V
• ROM version package P-SDIP 52
• ROMless version package P-LCC84
12.2.
External Crystal and Programmable clock speed
• Single external 6MHz crystal, all necessary clocks are generated internally
• CPU clock speed selectable via special function registers.
• Normal Mode 33.33 MHz CPU clock, Power Save mode 8.33 MHz
12.3.
Microcontroller Features
• 8bit 8051 instruction set compatible CPU.
• 33.33-MHz internal clock (max.)
• 0.360 ms (min.) instruction cycle
• Two 16-bit timers
• Watchdog timer
• Capture compare timer for infrared remote control decoding
• Pulse width modulation unit (2 channels 14 bit, 6 channels 8 bit)
• ADC (4 channels, 8 bit)
• UART
