TEA2029 STMICROELECTRONICS [STMicroelectronics], TEA2029 Datasheet - Page 45

• Manufacturer Part Number: TEA2029
• Description: APPLICATION NOTE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

VIII.6.3 - Frame safety
In case of failure in the loop, the thyristor may
remain turned-off while the inverse parallel-con-
nected diode conducts. This will result in a haz-
ardeous situation where the voltage across the
VIII.7 - Frame Scanning in Class B with Flyback Generator
VIII.7.1 - Application diagram
Figure 92
+12V
N.C.
10k
1
TEA2029C
2
3
Frame Sawtooth
5
4
200V
15nF
TEA2029C
(Pin 14)
150k
10k
Vertical Amplitude
Adjust
680k
7
1
15k
coupling capacitor ”C
high value.
To avoid such situation, the voltage at point (a)
should be applied to the ”Safety” input Pin 28 after
it has gone through the matching network ”R4, R5”.
TEA2028 - TEA2029 APPLICATION NOTE
+24V
2
TDA8172
1N4001
470k
6
4
100 F
3
5
P
” will reach an excessively
0.7App
Frame
32mH
Yoke
15
Vertical
Phase
Shift
45/46