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Voltage References

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TDA33018<br />

Figure 18. Typical Video Output Stage<br />

----.----------- +250V<br />

12k<br />

12k<br />

IN4148<br />

Gain<br />

Video BF789<br />

Drive --'VVI.---W\r--f--=.:...:...:..:C---T--+-12-V-----loOk<br />

To Other 4.7k<br />

Stages<br />

1.5k<br />

22k<br />

22k<br />

1.5k<br />

1.0nF<br />

Feedback..----------_-----'lNY---....<br />

3.3k r 33pF<br />

'RF is chosen to suit CRT characteristics, typically 120 k.<br />

Figure 19. Class A Video Output Stage with Direct Feedback<br />

Gain<br />

Video _-----v'/Ar---....----j<br />

Drive<br />

2.0k<br />

2.2k<br />

Feedback ..------------'<br />

10k<br />

+250V<br />

1.0k<br />

.----Yvv------. CRT Cathode<br />

MOTOROLA LINEAR/INTERFACE ICs DEVICE DATA<br />

180<br />

t80<br />

9-312<br />

loOk<br />

CRT<br />

Cathode<br />

Spark<br />

Gap

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