5-1-1. +210V
For the flyback period, pulses are stacked up to DC +125V
with FBT, and the voltage is rectified by D406 and filtered
by C446.
+125V
5-1-2. +35V, 12V
Pin 4 of the FBT is grounded and the shaded area of nega- tive pulse developed for opposite period of the flyback pe- riod is rectified, thus developing better regulation power supply.
As a power for the DPC circuit, a negative pulse signal is rectified by D460 and filtered with C460, thus developing the
5-1-4. High Voltage
0
Fig.
10
0
4
7 +35V 
0
6 For +12V
Singular rectification system which uses a harmonics non- resonant type FBT is employed and a better high voltage regulation is obtained, so amplitude variation of pictures becomes low.
2
1
0
F
Primary
Auxiliary
G
E |
|
|
| Picture |
|
| tube anode | E |
|
| |
| Picture |
|
D | tube capacitor | EH |
| ||
| D | |
C |
| |
| C | |
|
| |
EO |
|
|
B |
| B |
A |
| A |
|
|
ABL
Fig.
Fig.
PulseG
F
Stacked pulse of 4 block
1H
15.735KHz
The high voltage coil is of film
The basic operation is described in the case of 4 blocks con- struction for simplification. Positive or negative pulse deter- mined by stray capacitance of each coil develops at terminal points ( A , B , C , D , E , F , G ) of each coil as shown in Fig. 9- 18, and these pulses are stacked as shown, thus developing the high voltage.
Moreover, a capacitance between the internal and external coatings of the picture tube works as a smoothing capacitor.
Focus voltage is obtained at point EO.
76
