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capasitor series with bulb
The steady state value for current in a DC Circuit composed of a capacitor series with resistor " bulb " is zero, but, during the transiet period, the current has an exponential decay from a peak value " =E/R " and decays to reach zero in some multiples of a certain...
Yes, it is very enough, i just thought this as a common failure mode for Mosfets and IGBTs.
I think a loose connection to the mosfet gate can cause bolw-up due to arbitraty firing " noisy ".
The circuit as shown has no switching driving ciruit to drive the mosfet gate, , as u connect the gate to the 12 v positive of the battery , means that the motor operates continously, i.e. no inductive overvoltage will happen,.
This makes the o.v. cause out of occurance, i think the mosfet...
power electronics simulation program
Simulink associated with MATLAB seems very good and versatile to simulate power electronics systems espeacially motor loaded, u can check a lot of demos prepared in Simulink help
force commutated thyristor circuits
Hi,
Forced commutation is used in order to force a thyristor to turn-off.
It is used mainly in thyristor circuits as thyristors can't be turned off by gate control " GTO is an improved limited application thyristor with can be commutated by negative gate...
PLL Filter Design"?
Hi ALL,
I use "4046 Chip " as a PLL with a reference frequency of 50 Hz " Power Frequency" with a divider in feedback N=60 "two 4017 Chips" and using Phase Comparator 2 to obtain zero degree phase shift between input and output when in lock, the VCO is a wave generation...
Hi,
I am planning to produce a software that help in electrical design automation., but, i want to know the trends available for me to market and sale this software commercially and protect it...any advice???
ok wanily let's check this series i made to represent your case
from right meshes:-
R(i)=(((R(i-1)+2R)*R)/(R(i-1)+3R)
R(0) = R
Take R1 = 3/4 R
R2 = 11R/16
...
The values will decrese
getting R (∞) will be if we put X= R(i-1) tends to zero
resulting in R(∞) = 2/3 R
From left the same
both...
paralling an infinite number of resistors with a resistance R will result mathematically into an equivalent resistance value equals to 2/3 R, here is the conclusion :-
for a 3 resistors Xi,R,R parallel with a resistor R , the equivalent value will be :
=((Xi+2R)*R)/(Xi+3R)
For a series with X...
What is the relation " Math. " between the system " source, bus-bar, Generator, DC Supply, .." capacity (S) and the internal impedance of it?.
Any system has an internal impedance which isn't zero, which means any current drained from it , will make a voltage drop and regulation then arises, is...
Hi all
How can i size a cable for a motor?i mean do i have to multiply the rated cuurent by a factor to compensate the starting current capacity heating for the cable?
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