3

500 - 71 - 9

Gain of stage

For low impedance receivers, a capacitor from pin 6 to pin 2 may be required for stability.

All resistors in ohms, all capacitors in

µF unless otherwise stated

Gain of stage B = 20

-A

-B

18K

100K

0.22

1.0

3.9K

4

3

6

5

1

82

7

BASE CURRENT

COMPENSATION

33K

18K

RE

3

1

8

5

6

7

2

Patent No.154104

Fig. 2 Functional Schematic

Fig. 3 Typical Hearing Aid Circuit

All resistors in ohms, all capacitors in

µF unless otherwise stated