Questions tagged [power]
Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt (one joule per second). Use this tag where power is a primary concern for the design under discussion. Use the "low-power" tag when that applies.
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Does On-Chip Decoupling Negate the Need for PCB PDN Analysis
I am preparing a PDN decoupling simulation for a KSZ9897RTXI switch, which utilizes 1.2V, 1.8V, and 2.5V rails.
I am trying to establish the maximum frequency range for my target impedance analysis.
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Does "power circuits" refer to circuits with 110V, 220V, or 380V?
In The Art of Electronics 3rd, it mentions:
Resistors are used in power circuits to reduce voltages by dissipating
power, to measure currents, and to discharge capacitors
after power is removed.
I'm ...
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TPS2121 timing issue
I'm using a TPS2121 as in the image, and i'm facing an annoying issue.
The board is powered by an external 24V and a 12v battery. There is a dc/dc 24v>12v (PS1 in the circuit) that pushes a 12v in ...
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Lug Terminal Loosening [closed]
I'm working on a disconnector of this type, how much of an issue is if the terminal is slightly loose from the inside of the switch, I tightned them using two spanners to not create stress on the ...
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Did I use the correct formulas for sizing conductors at the same power losses between single and three phase transmission?
Looking for help from people familiar with 3 phase generation and transmission. Would greatly appreciate answers to my questions below. All questions relate to 3 phase and single phase AC transmission ...
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Finding maximum source current before resistors exceed power rating (where is my mistake?)
I found an interesting circuit analysis problem from Hayt, but I am not sure where my reasoning goes wrong.
Problem
Referring to the circuit of Fig. 5.5a, determine the maximum positive
current to ...
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Peltier Cooling system power supply problems
I am trying to show my students thermoelectric refrigeration.
I am using this Peltier setup.
Lsgoodcare DIY Peltier Cooler Kit 12V Semiconductor Thermoelectric Cooler TEC1-12706 .
It is specified as ...
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Amplifier schematic for 14MHz CW transmitter, 5mW input to ~500mW output
I'm building a simple CW transmitter for the 20m band (14MHz) from a schematic I found online. My oscillator outputs approximately 5mW and I'm looking for a schematic for an amplifier stage (1-2 NPN ...
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Determining the maximum instantaneous current of a voltage rail
I am currently performing a Power Integrity (PI) AC analysis for an Ethernet design and need to define the target impedance for the AVDDL core rail. This is the device
While the datasheet identifies ...
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Connecting AC Input Into Switching Power Supply
I am using the ALRS12V5AT Switching Power Supply to convert wall 120V AC power to 12V DC that I am using for a project. In the interest of safety, I want to understand how to wire up the cables into ...
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Transfer function of totem pole PFC
Can anybody help in finding proper plant transfer function of Totempole PFC converter as shown below, with reference if possible
Input voltage: 176 to 265 V AC 50/60 Hz
Maximum power steady-state: ...
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NFC energy harvesting front-end circuit analysis
I am trying to do the circuit analysis of below NFC energy harvesting circuit taken from presentation available on page 7 of this presentation: NFC Hybrid Harvester for Battery-free Agricultural ...
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TPS552882 24V-5V Buck Converter Showing No Output
I am an Electrical Engineering student at McGill University, and I recently designed and assembled (by hand) a 24V-5V buck converter designed to output up to 10A of continuous current.
I am using the ...
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Why is SEPIC converter named so? Is it a misnomer?
This is a follow up question to What does "Single-Ended Primary Inductor" mean?
The below doubts are not clear from the previous answers.
"Single-Ended Primary Inductor Converter":
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Potential problem when powering a cheap 8-bit MCU on moving/floating VDD & VSS voltages in an appliance; maintains (steady state) 5V difference
I came across an appliance, where the power to load is coil-relay controlled by an 8-bit MCU.
The circuits get power from mains rectified, then voltage regulated using two zener diodes at VEE=24V and ...
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