3

HP2802-1

All resistors in ohms, all capacitors in microfarads unless otherwise stated

Fig. 2 LP502/LC549Hearing Instrument Application

All resistors in ohms, all capacitors in

microfarads unless otherwise stated

Fig. 3 LP502/LE507 Hearing Instrument Application

0.1

4.7

R

S

3.9k

FULL WAVE

RECTIFIER

500k

0.1-1.0

0.1

4.7

V

C

4.7

V

LP502

2

1

7

4

3

6

5

8

NC

0.047

TYP

2

3

7

5

6

1

8

AMP

LC549

4

VOLTAGE

REGULATOR

0.1

GAIN TRIM

=10k

0.1

4.7

R

S

3.9k

500k

0.47

0.1

0.1

0.1

BK1606

V

LP502

2

1

7

4

3

6

5

8

V

C

10k

AMP

7

1

4

3

2

8

6

25k

5

FULL WAVE

RECTIFIER

2k

18k

13.5k

LE507

GAIN TRIM

33k

VOLTAGE

REGULATOR

Z=1k