TA8233BH

2002-10-30

7

(Precaution 1)

When the stand-by terminal was put to the low level after the ripple rapid discharging circuit was operated

the stand-by terminal low shall be set at 8V or above so that (1) the stand-by terminal is put at the low level

example of application is shown in Fig.9.

(Precaution 2)

In this case, it is possible to prevent the pop noise from becoming worse by reducing the ability of “ripple rapid

However, it shall be kept in mind that the time for turning the power on becomes longer as the result of this

method.

8. External part list and description

Influence

Sym

-

bol

Recommended

Value

Feature

Smaller Than

Recommended Value

Larger Than

Recommended Value

Remarks

C1

4.7µF

DC blocking

Related to gain.

Refer to item 4.

C2

47µF

Feedback condenser

Determination of low cut

-off frequency

f

R

L

f

2

1

C2

×

×

p

=

C3

220µF

Ripple reduction

Time constant is small

Time constant is large

C4

0.12µF

Oscillation prevention Made liable to oscillate.

Oscillation allowance

Refer to item 3.

C5

1000µF

Ripple filter

For filtering power supply hum and ripple.

Large at using AC rectified power supply.

Small at using DC power supply.

C6

1000pF

Oscillation prevention Oscillation allowance improved.

Noise reduction

Refer to item 3.