參數(shù)資料
型號(hào)： TDA9109A
廠商： 意法半導(dǎo)體
英文描述： LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR
中文描述： 低費(fèi)用的I2C可控?fù)隙榷嗤斤@示器處理器
文件頁(yè)數(shù)： 33/47頁(yè)
文件大小： 509K
代理商： TDA9109A
TDA9109A
33/47
2.6 Horizontal and Vertical Dynamic Focus
The TDA9109A delivers a horizontal parabola
which isadded on avertical parabola waveform on
Pin 10. This horizontal parabola comes from a
sawtooth inphase advance with flyback pulse mid-
dle. The time advance versus horizontal flyback
middle is kept constant versus frequency (about
1
μ
s).
Symmetry and amplitude are I
2
C adjustable (see
Figure 15). The vertical dynamic focus is tracked
with VPOS and VAMP. Its amplitude can be ad-
justed. It is also affected by S and C corrections.
This positive signal once amplified is to be sent to
the CRT focusing grids.
Figure 15. Phase of HFocus Parabola
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