Questions tagged [current]
Flow of electric charge - typically movement of charge carriers, such as electrons. Measured in amperes (A).
6,664 questions
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Startup current vs LDO capability
I’m designing a small board with a external IMU that requires 3.3 V ±7%, nominal current of about 0.1 A, and a max start current of 1.5 A according to its datasheet.
I have very limited space, so I’d ...
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Shunt Resistor PCB Design Comparison Questions
Pad A has a direct PCB copper connection from the pad to the adjacent 16v power plane and a thru-hole 5 mOhm 600 mW resistor.
Pad B has your standard SMD shunt resistor, 5 mOhm, 1 W, 1206 size, ...
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What is ripple current in an inductor?
What is a ripple current in an inductor?
What is meant by ripple current and inductor ripple current?
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“What size circuit breaker should I use for a 4500W single-phase load with 4mm² cable?” [closed]
I have a small shop with 4 planer machines, 1 iron machine, 2 fans, and 2 lights — the total load is around 4500 watts. I’m using a 4 mm² copper cable for wiring. My electrician suggested using a 63-...
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How can I draw the i(t) and p(t) graphs of capacitor exposed to v(t) curve? [closed]
I thought I should find the equation of the graph in order to draw the i(t) and p(t). However, I don't know how to find the equation of the V(t) - t (s) graph.
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AC DC converter with linear elements
I have created an AC-DC converter by using only linear elements on Falstad.
My way of thinking is like this: Start with a (co)sine wave as input. We know that the (co)sine wave has a transfer function ...
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Feedback of -1 opamp
If we want a feedback of 1 what you do is take the output of opamp and you feed it back to the input with a straight wire just like this:
simulate this circuit – Schematic created using ...
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Is this simple battery charger safe?
While experimenting on transistors and current flowing I came to the idea to set up this simple circuit
It's weird...
...to see a positive voltage from the negative side of the battery on the right.
....
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How to add time to a complex representation of power?
Total impedance of the RC circuit:
For simplicity, I will assume that
then
and
Otherwise I will represent this expression as
Now I want to represent power in complex form
But since
then
On the ...
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Purer AM modulator
I was looking at a AM modulator circuit with a diode and I was dissatisfied with how during the amplitude modulation you produce unwanted frequencies(more specifically the carrier frequency) and as a ...
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LT6230 Opamp- Output current higher than supply current?
I was looking at the datasheet of the LT6230 Opamp, and found that it's supply current was specificied as being less than it's maximum output current. I don't understand how this is possible, ...
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Is this the proper way to route an LDO? Please let me know [closed]
I am trying to lay out this PCB for the first time and don't know how to add the LDO. And my layer stack up goes from signal, GND, PWR, and Signal. Please let me know how I can lay out the PCB.
Here ...
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Diode voltage divider problem
For the voltage divider below, I am asked to find the Q-Point for both ideal diodes in forward-bias mode (i.e., they are both short circuits with one-way current):
In my work, I found \$i_1\$ and \$...
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"If I touch two isolated voltage points, 50 V and 250 V, will current flow through me? How does current flow from high to low apply here?
I have a question about current flow in an unusual scenario. Suppose there are two completely isolated voltage sources, one at 50 V and another at 250 V, with no conductive connection between them. If ...
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Why is the value set on function generator different than the one measured in DSO?
I am a first year student of ECE.
There was this experiment of basic electronics where we had to generate function through function gen. and read the properties of thee output signal through DSO.
Func....
