Questions from Electronics

Q: a. Determine the transition capacitance of a diffused junction varicap diode

a. Determine the transition capacitance of a diffused junction varicap diode at a reverse potential of  V if C(0) = pF and Vr =  V. b. From the information of part (a), determine the constant...

Q: a. For a varicap diode having the characteristics of Fig.

a. For a varicap diode having the characteristics of Fig.  determine the difference in capacitance between reverse-bias potentials of — V and — V. b. Determine the incremental rate of change (...

Q: Refer to the emergency-lighting system of Fig. 17.

Refer to the emergency-lighting system of Fig. 17.14. a. Sketch the waveform of the full-wave rectified signal across the bulb using a drop of 0.7 V during conduction of each diode. b. Determine the p...

Q: What is the reactance of a 10@mF capacitor at a

What is the reactance of a 10@mF capacitor at a frequency of 1 kHz? For networks in which the resistor levels are typically in the kilohm range, is it a good assumption to use the short-circuit equiva...

Q: Given VC = 8 V for the network of Fig. 4

Given VC = 8 V for the network of Fig. 4.140, determine: a. IB. b. IC. c.  d. VCE.

Q: What is the suggested turn-off procedure for the network of

What is the suggested turn-off procedure for the network of Fig. 17.18?

Q: For the network of Fig. 17.19 a.

For the network of Fig. 17.19 a. Write an equation for the voltage from gate to ground for the SCR. b. What is the voltage VGK when RS = R'? c. Find RS to establish a turn-on voltage of 2 V if R' = 10...

Q: a. In Fig. 17.22, if V=

a. In Fig. 17.22, if V= 50 V, determine the maximum possible value the capacitor C1 can charge to (VGK ÷ 0.7 V). b. Determine the approximate discharge time (5t) for R3 = 20 kΩ. c. Determine the int...

Q: a. Using Fig. 17.24b, determine the minimum

a. Using Fig. 17.24b, determine the minimum irradiance required to fire the device at room temperature (25°C). b. What percentage reduction in irradiance is allowable if the junction temperature is in...

Q: For the network of Fig. 17.28, if VBR

For the network of Fig. 17.28, if VBR = 6 V, V = 40 V, R = 10 kΩ, C = 0.2 mF, and VGK (firing potential) = 3 V, determine the time period between energizing the network and the turning on of the SCR....