Questions tagged [current]
Flow of electric charge - typically movement of charge carriers, such as electrons. Measured in amperes (A).
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Transistor switching speed
I want to be able to identify the speed of a transistor in terms of switching. Most datasheets don't indicate that but I found this transistor from ST-Electronics. Is it the maximum switching ...
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RMS current measurements using Arduino uno [closed]
I'm working on an energy monitor using Arduino uno board. I'm using the open energy monitor library to measure RMS current. The current is measured using a CT. While observing the current measured by ...
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Can a voltage higher than LED maximum be used when using constant-current LED driver?
I am planning to use these components:
TLC59283
CREE J Series 5630 LEDs
Specifically, I want to create a setup like Figure 9-1 on pg. 22 of the TLC59283 datasheet. Currently, I am trying to choose a ...
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How to know what size diode to use for inductive spiking?
I am making a simple Zener flyback circuit for an inductor.
What current rating should the diodes be sized for? Could I use a 1 watt Zener diode because the voltage spike only lasts a few microseconds,...
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Is a capacitor a memoryless system?
According to my textbook,
A system is said to be memoryless if its output for each value of the independent variable at a given time is dependent on the input at only that same time.
It also gives ...
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Current varies with constant firing time in an SCR
Please bear with me as I am not a power electronics guy.
I have a circuit in a battery charger that triggers SCRs, attached here. I am generating the fire pulse from a microcontroller at a constant ...
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Why, when conductors are connected in series, their current strength is equal?
Why, when conductors are connected in series, their current strength is equal, because the resistivity of the conductors can be different?
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Current concept doubt (charging/discharging) [closed]
Current concept confuses me alot in electronics, have some questions regarding the same-
Suppose my battery rating is 5V 1A (1000mAh) and suppose there is an Rpi to which i want to power and its ...
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Three phase rectifier output current
I´m designing a three phase power transformer, and i´m having troubles with the choosing the current value. After the transformer, goes through a three phase bridge rectifier ( full wave and not ...
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Distribute power from one battery to multiple devices
I have a battery, Li-po 3300mAh 22.2V 60C. Then, I have a system (main system, so to speak) which consist of STM32MP1 MPU (operating voltage [1.71, 3.6], typ. 3.3), STA8135GA GNSS IC (operating ...
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Should I replace my stepper driver since my motor is acting up?
I've been using a Pancake Bipolar Stepper Motor for a project and STSPIN220 as the driver, but I've been randomly having a lot of current issues causing my motor to jitter.
My project has been running ...
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Why is a push-pull transistor configuration asymmetric?
Looking at the circuit below:
How do I analyze it? Specifically, why is the output able to go nearly all the way to +12 V but not beneath 0 V? I'd expect that when V(sig) < 0, since current flows ...
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Help measuring the current of a PMSM with shunts
I am trying to make my own FOC algorithm (because why not?), and i ran into a problem when measuring the current of two of the three phases of the motor.
The schematics are on the image
The motor ...
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Voltage and current on two identical TVS diodes in parallel during a voltage spike
Suppose I have two identical unidirectional TVS diodes (A and B) connected in parallel to a voltage source and suddenly a voltage spike occurs (spike voltage > voltage clamp of the TVS diode specs ...
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Is my stepper motor driver causing me current issues or is it me?
I've been using a Pancake Bipolar Stepper Motor for a project and STSPIN220 as the driver, but I've been randomly having a lot of current issues causing my motor to jitter.
My project has been running ...
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