For the MOS inverter circuit shown in Figure 3.45, assume the circuit values are V D D = 5 V and R D = 500 Ω . The threshold voltage of the transistor is V T N = 1 V . (a) Determine the value of the conduction parameter K n such that υ O = 0.2 V when υ I = 5 V . (b) What is the power dissipated in the transistor? (Ans. (a) K n = 6.15 mA/V 2 , (b) P = 1.92 mW )
For the MOS inverter circuit shown in Figure 3.45, assume the circuit values are V D D = 5 V and R D = 500 Ω . The threshold voltage of the transistor is V T N = 1 V . (a) Determine the value of the conduction parameter K n such that υ O = 0.2 V when υ I = 5 V . (b) What is the power dissipated in the transistor? (Ans. (a) K n = 6.15 mA/V 2 , (b) P = 1.92 mW )
Solution Summary: The author explains the value of condition parameter K_n. The transistor is in non-saturation.
For the MOS inverter circuit shown in Figure 3.45, assume the circuit values are
V
D
D
=
5
V
and
R
D
=
500
Ω
. The threshold voltage of the transistor is
V
T
N
=
1
V
. (a) Determine the value of the conduction parameter
K
n
such that
υ
O
=
0.2
V
when
υ
I
=
5
V
. (b) What is the power dissipated in the transistor? (Ans. (a)
K
n
=
6.15
mA/V
2
, (b)
P
=
1.92
mW
)
3.7 A single-phase full-bridge inverter feeds power at 50 Hz to RLC load with R = 5 2,
L= 0.3 H and C = 50 µF. The DC input voltage is 220 V DC. (a) Find an expression for
load current up to the fifth harmonic. (b) Calculate the power absorbed by the load and
the fundamental power. (c) Calculate the RMS and peak currents of each thyristor.
3.8 Explain the working of a three-phase bridge inverter with an appropriate circuit
diagram. Draw phase and line voltage waveforms on the assumption that each thyristor
conducts for 180° and the resistive load is star connected.
3.9 Repeat Problem 3.7 in case each thyristor conducts for 120°.
3.10 Repeat Problem 3.7 in case the load is delta connected.
3.11 A star-connected load of 28 2 per phase is fed from 440-V DC source through a
three-phase bridge inverter. For both (a) 180° mode and (b) 120° mode, determine: (i)
RMS value of load current. (ii) RMS value of thyristor current. (iii) Load power
3.12 What is the need for controlling the voltage at…
With a single phase full bridge square wave
inverter connected to a 24V DC power supply,
50H output frequency AC output is aimed. The
load resistance is 10 ohms and the inductor is
250mH. Calculate the maximum value (in
milliamps) of the load current.
a) 546
b) 474
c) -546
d) -474
e) 323
Q1. The single-phase half-bridge inverter in the figure below is switched on to
generate a complete square voltage at the output. In this circuit, E = 160V and
RL load with specifications of R
voltage frequency is 50HZ. Then what is the THD output voltage percentage%?
10 ohms and L= 20mH. If the output
E/2
LR
E/2
Answer
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Power Inverters Explained - How do they work working principle IGBT; Author: The Engineering Mindset;https://www.youtube.com/watch?v=iIqhAX0I7lI;License: Standard Youtube License