All Questions
22
questions
2
votes
0
answers
58
views
Typical load examples for RL and RC series and parallel circuits
I have already learned theoretical description of RL and RC circuits and their behavior. But now with a benefit of hindsight I have never truly learned about typical real world loads that have similar ...
- 121
2
votes
0
answers
87
views
Crystal Load capacitors & ESR
In the KSZ8863 datasheet, the crystal specification is given (table 9-3), page 85.
Here the ESR is specified to 40ohms with no minimum nor maximum marking.
Load capacitance is specified to a max of ...
user220456
0
votes
0
answers
102
views
Loading problem with circuit simulation
EDIT #1
So I understand now the phenomenon that is happening.
Taking operational stage 2 Switch is OFF.
So there are the 2 cases discussed.
RL = ∞ (exaggerated scenario) the current I1 >> I2 ...
- 536
1
vote
1
answer
168
views
Crystal oscillator unbalanced external capacitors
The below lines are from AVR® Microcontroller Hardware Design Considerations (AN2519).
"In noisy environments the oscillator can be crucially affected. If the noise is strong enough, the ...
- 2,593
0
votes
1
answer
149
views
What is the equivalent capacitive load seen by the IC if in a datasheet of a chip CLmax=10nF given and I connect an RC filter as a load?
I have a stupid question where in the quick, the answer does not come into my mind.
If in a datasheet of an integrated circuit, a maximum load capacitance is given, e.g. 10nF, and I want to connect an ...
- 101
2
votes
2
answers
230
views
Suitable Half Bridge Driver to control capacitve load
I am looking for a method to reliably and quickly charge/discharge capacitors. Each capacitor should be individually charged/discharged. The charge/discharge rate should be in the microsecond range (...
- 145
0
votes
1
answer
264
views
How does this under voltage lockout (UVLO) work?
In my project, I need an under voltage lockout (UVLO) to connect the load electronics to the energy-storage element via a power-gating transistor when the voltage across the supercapacitor exceeds ...
1
vote
1
answer
90
views
Drop-out voltage at the input using MOSFET
Please have a look at my below circuits.
The first one is an MOSFET. N-MOS.
Gate is fed with a function generator input of 5V peak to peak. 1kHz frequency. 1ms period. 90% duty cycle.
Drain is ...
user220456
0
votes
1
answer
628
views
Capacitor Voltage Hold up (During Input Power Interruption)
I want to understand how long a capacitor can provide the stable voltage for a given load current, in the event of an input voltage interruption?
Suppose, I have a single 100nF input capacitor at my ...
user220456
0
votes
1
answer
94
views
How does adding a capacitor change the frequency response of this inductive LPF?
I know that a simple circuit like this in an ideal case will have a frequency response of a single pole LPF, where the cutoff frequency is given by:
cutoffFreq = 1/(twoPi*L*2R)
This is reviewed here....
- 157
0
votes
1
answer
186
views
Voltage increase with capacitor... what's the "true" voltage?
The board on an old battery charger went bad, but the transformer was good. So I've got about a 12.3VDC output when I connect the transformer to a bridge rectifier. However, if I decide to wire in a ...
- 715
0
votes
0
answers
175
views
pwm half bridge inverter- split capacitor voltage alternating
In the half bridge inverter shown below, when driven by a PWM signal, the voltage Va (the voltage in-between the two capacitors C1 and C3) is a sine wave. I was expecting it to be a constant voltage ...
- 101
4
votes
2
answers
4k
views
Capacitor sizing for known current load
Apologies in advance for the long question, but I've hit a dead end trying to work through an interesting capacitor sizing problem. I'm hoping someone here can help.
Problem Description
I have a ...
- 43
-1
votes
1
answer
118
views
Which load resistance is connected to generator U2?
I have this op amp and one of the questions says
Which load resistance is connected to generator U2?
This is my attempt but I can not confirm if it right.
No it's not homework, it examples I'm ...
1
vote
0
answers
674
views
Can I use a capacitive divider to run an AC/DC converter from a higher voltage than its rating?
Suppose I have an AC/DC converter rated to run from 120-240VAC, and I want to run it off 480 VAC. I think I should be able to put two capacitors in series as a voltage divider, and run the converter ...
- 17.6k