=========================preview======================
(ELEC101)exam_pasta.pdf
Back to ELEC101 Login to download
======================================================
10

(34)

(a)

(b)

(c)

(d)


Text Box: Transfer function G

Text Box: If at cut-off, frequency is 10kHz and |Vo/Vi| =5

Text Box: At cut-off


Text Box: Given R2 = 1k





VZO = 6V

rZ = 5.

(a)

(b)

(c)


Text Box: When Vin = 1V

Text Box: When I = - 10mA





Text Box: model
Text Box: Model of diode at breakdown


1

(15)

VO

a

b



Text Box: 1. Given the ideal op amp filter circuit and .(a) Find VO / V .(b) Show that the complex transfer function G







(40)

c

d

e

f

Text Box: ..O = cut-off frequency





Text Box: Circuit is a low pass filter
Text Box: when .. = 0
Text Box: At cut-off frequency,





7

C

-3V

(30)

5V

Vi

Vo

a

b





Text Box: Vo = Vi + Vc = Vi - 12


Text Box: 7. (a) In the ideal diode circuit, sketch Vo(t). Label clearly the voltages in your sketch. (12) (b) In the ideal

(27)

2

5V

D2

-9V

D



VZK = 6V

rZ = 5.

6

(16)






Text Box: model
Text Box: a
Text Box: 6. In the diode circuit, the diode has the reverse characteristics as shown. The diode equation is

Text Box: b




(29)



Text Box: c

Text Box: d

(24)

7

T



Text Box: 7. (a) Plot the waveform of VO(t) . Show clearly the voltage and time in your plot. (b) If a capacitance C is co





Text Box: a
Text Box: b