{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

exam_pasta

# exam_pasta - (34 10 In the ideal op amp circuit below(a...

This preview shows pages 1–3. Sign up to view the full content.

(34) 10 In the ideal op amp circuit below, (a) find the complex transfer function G = Vo/Vi in terms of Z 1 and Z 2 . (b) If the circuit is a high pass filter, find Z 1 and Z 2 in terms of R 1 , R 2 and C and sketch the circuit. (8) (c) Find the complex transfer function G = Vo/Vi in terms of R 1 , R 2 , C and j ω . (6) (d) If for the high pass filter, cutoff frequency = 10kHz and |G| = 5 at cutoff. Find R 1 and C. Given R 2 = 1k . (14) (e) Sketch |G| (in dB) ( = 20log |G| ) versus angular frequency ω . Show clearly all intercepts in your sketch. (6) 1 1 2 1 2 1 2 1 1 1 1 CR j R R C j R R Z Z V V G i o ω ω + = + = = = j R R G = 1 1 1 2 At cut-off Transfer function G Z 2 V o V i Z 1 1 2 i O Z Z V V G = = If circuit is a high pass filter 2 2 1 1 1 R Z C j R Z = + = ω R 2 V o V i R 1 C If at cut-off, frequency is 10kHz and |Vo/Vi| =5 1 1 ) 10 ( 2 CR k cutoff = = π ω 2 1 5 | | 1 2 R R G = = Given R 2 = 1k = = = 141 2 1 5 1 2 1 | | 2 1 k G R R F F x k R C cutoff µ π ω 113 . 0 10 13 . 1 141 ) 10 ( 2 1 1 7 1 = = = (c) (d) (a) ω cutoff ω 17 14 dB Vi V O dB k R R 17 141 1 log 20 log 20 1 2 = = (b) (e)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
(30) Model of diode at breakdown In the ideal op amp circuit, the diode has the reverse characteristics as shown. The diode equation is I = Io exp [(V/25mV) – 1].
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 9

exam_pasta - (34 10 In the ideal op amp circuit below(a...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online