Table 4 Detailed description of four-op-amp biquad high-pass filter fault modes.

From: Enhanced analog circuit fault diagnosis via continuous wavelet transform and dual-stream convolutional fusion

Fault type

Fault mode

Nominal value

Tolerance range

Fault value

F00

NF

–

–

–

F01

C1↓

5 nF

10%

3.5 nF

F02

C1↑

5 nF

10%

6.5 nF

F03

C2↓

5 nF

10%

3.5 nF

F04

C2↑

5 nF

10%

6.5 nF

F05

R1↓

6.2 kΩ

5%

4.3 kΩ

F06

R1↑

6.2 kΩ

5%

8.1 kΩ

F07

R2↓

6.2 kΩ

5%

4.3 kΩ

F08

R2↑

6.2 kΩ

5%

8.1 kΩ

F09

R3↓

6.2 kΩ

5%

4.3 kΩ

F10

R3↑

6.2 kΩ

5%

8.1 kΩ

F11

R4↓

1.6 kΩ

5%

1.1 kΩ

F12

R4↑

1.6 kΩ

5%

2.1 kΩ

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