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STV8172A

Application Hints

4.2

AC-Coupled Applications

the scanning cannot be adjusted with input bias (for that purpose, usually some current is injected

or sunk with a resistor in the low side of the yoke).

4.2.1

Application Hints

Gain is defined as in the previous case:

or

Figure 6: AC-coupled Application

+Vs

Rd(*)

Yoke

Ly

(*) recommended:

Ly

50

µs

-------------

Rd

Ly

20

µs

-------------

<

<

0.1µF

Power

Amplifier

Flyback

Generator

Thermal

Safety

470µF

Output

Current

Output

Voltage

7

32

5

6

1

4

+

-

1.5

Ω

I

p

V

M

V

m

–

2

------------------------

R

2

R

1

R

3

×

----------------------

×

=

V

S

2

--------V

7

–

R

4

R

5

+

----------------------

V

7

V

M

V

m

+

2

------------------------

–

R

3

--------------------------------------

V

7

R

2

-------

+

=

V

7

1

R

3

-------

⎝

⎛

1

R

2

-------

+

×

1

R

4

R

5

+

----------------------⎠

⎞

V

S

2R

4

R

5

+

()

------------------------------

V

M

V

m

+

2R

3

×

------------------------

+

⎝⎠

⎜⎟

⎛⎞

=

+