VESTEL 11AK19, Service Manual

Page: 13 / 40

PINNING
1 . Non-inverting input 1
Mute input
Ground
Output 1
Supply voltage (negative)
Output 2
Supply voltage (positive)
Inverting inputs 1 and 2 (Ground)
Non-inverting input 2
PIN VALUE
700mVrms, Min : SOOmVrms, Max : 900mVrms
300mA (For mute to activate)
9.8Vrms
-16VDC
9.8Vrms
+16VDC
0V
700mVmns, Min : SOOmVims, Max: 900mVrms
TDA8351/8356:
General Description:
The TDA8356 is a power circuit for use in 90e colour deflection system for field frequencies of 50 to 120 Hz.
The circuit operates as a highly efficient class G system.
The TDA8351 is a power circuit for use in 1100 colour deflection system for field frequencies of 50 to 120 Hz.
The circuit operates as a highly efficient class G system.
Features:
Few external components
Highly efficient fully DC-coupled vertical output bridge circuit
Vertical flyback switch
Guard circuit
Protection against:
• short-circuit of the output pins (7 and 4)
- short-circuit of the output pins to Vp
Temperature (thermal) protection
High EMC immunity because of common mode inputs
A guard signal in zoom mode
PINNING
1 . Input power-stage (positive); includes li(sb) signal bias
2. Input power-stage (negative); includes li(sb) signal bias
Operating supply voltage
Output voltage B
Ground
Input flyback supply voltage
Output voltage A
Guard output voltage
Input feedback voltage
PIN VALUE
400mA, Min : 50mA, Max : 500mA
400mA, Min : 50mA, Max : 500mA
+15VDC
Max : 52V Output current: 2App (TDA8356) 3App (TDA8351)
Min : Vp, Max : 50V
Max : 52V Output current: 2App (TDA8356) 3App (TDA8351)
Max:5.5V (lo:100mA)
Max:52V
TDA6107Q:
The TDA6107Q 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 (R(, Ri and Ra) are integrated, so the gain is fixed
and it saves 9 resistors.
To obtain maximum performance, the amplifier should be used with black-current control and mounted on the CRT panel.
Features:
Bandwith: 4.0 MHz typ at 100Vpp (Measured in application set-up, with Rfl=1K5 and CI=Ctube+Cpcb=10pF)
Slewrate: 950V/ms
Fixed gain of 50 times
No external components, only the well known supply decoupling
Very simple application with a variety of colour decoders
Black-current measurement output for automatic black current stabilization
Only one supply voltage needed
Internal protection against positive appearing CRT flash-over discharges
Protection against ESD
Internal reference voltage
Thermal protection
Controllable switch-off behaviour
Very small PCB dimensions
Very high replacement value
PINNING
1. Inverting input 1
2. Inverting input 2
3. Inverting input 3
4. Ground
5. BSC-output
6. Supply voltage
7. Cathode output 3
8. Cathode output 2
9. Cathode output 1
PIN VALUE
2Vpp
2Vpp
2Vpp
Max:7V
200VDC
20mA, 100Vpp
20mA, 100Vpp
20mA, 100Vpp
12