3

500 - 25 - 09

Fig. 1 Test Circuit

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

U.S. Patent No. 4,085,382 - Patented in other countries

Fig. 2 Equivalent Circuit

C4

0.047

C2

6.8

C3

6.8

400

LC/LD549

600

Ω

1kHz

60k

560

S1

S2

S3

C1

0.1

39

10

40dB ATTENUATOR

TI

1:1

4

3

2

7

1

6

5

8

All resistors in ohms, all capacitors in

µF unless otherwise stated

Gain = 20 Log

) +40 dB

VOUT

VIN

1

2

4

3

6

8

+

+

600

27k

5

7

=

∞