Questions tagged [ac-dc]
Questions regarding the safe and effecient design and implementation of AC voltage to DC voltage supplies. Typically Mains to some lower DC voltage.
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Is this circuit safe to put in my ceiling? What improvements could I make?
I uploaded a picture, is there a better way for me to share the circuit?
The addressable LEDs use up to 100 mA at 5 V, that is why I am using three 5 V power supplies in parallel, each offering 600 mA....
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AC-to-DC rectifier and DC-to-DC converter
I am currently doing an assignment featuring an AC-DC EV Charger topology as shown below.
I have obtained answers for (a) and (b). However, I am unable to derive the equation exactly as given in the ...
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What are these resistors used in this flyback converter?
I'm new to designing flyback converters. I noticed resistors connecting the primary and auxillary coils. Can somebody explain the usage of these resistors for me.
The IC in this schematic is a CR1510. ...
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Ground connection of power converter and MCU
I've designed an AC/DC power converter PCB, with input, and output voltage sensing, but I have problem connecting it to microcontroller board, i'm using F28379D launchpad as the microcontroller.
I ...
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How should I come up with a power supply for 5 motors, one micro-controller (ESP32) and one microprocessor (Jetson Nano) for an object sorting arm
I am trying to design a power supply for a robotic arm with 5 servo motors(2 are MG90S and 3 1501MG motors). I'm planning to use an ESP32 microcontroller and Jetson Nano.
I have the option of using ...
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Second opinion on PCB design for relay made in Altium
Edit: I have added the updated PCB design at the bottom over this post (for anyone curious about the progress)
And a big thanks to everyone who commented, it really helped me out a lot!
Original ...
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Verify the correctness of a circuit: AC to DC conversion for Arduino Nano and relays
I need your opinion about the correctness of my circuit. As is shown in the drawing schematic, the circuit is supplied by 220 VAC which will be converted to 12 VDC. This output is used to supply the ...
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LTspice AC/DC converter with DC/DC boost converter
So this is my first time using LTspice and I need to convert my (AC) Vin 11.5V to DC and then boost DC voltage to Vout 22.5V. I have a few givens and some I needed to calculate. I am struggling to ...
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DC-DC design with STUSB4761
I am designing a powered USB HUB (UFP) which can provide power to the host through USB PD. This means I need a PD controller which supports DR_Swap and it seems that STUSB4700/STUSB4710 cannot be used ...
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Understand firing angle chart in dual converter
How to understand below Firing Angle Chart,
I guess the y axis should be voltage of the source, but what is the x axis, why a1/a2 points right, the location of 0⁰/90⁰/180⁰ seems quite strange.
Hints ...
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How can an AC adapter push 11A but only suck 2A?
I have a laptop adapter that takes in 120V AC and converts it to 20V DC. The adapter is rated for 230W (11.5A 20V.) Knowing conservation of energy and such, this means that the adapter takes in 120V ...
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Calculating input power of ACDC power supply
I'm trying to calculate the input power draw of an ACDC power supply that we are using in a control chassis and am confused by what to me looks like conflicting information in the datasheet.
The power ...
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Ground connections around bridge rectifier in flyback converter
I am designing a flyback converter and I am being told to make the ground net connections as shown in the image below.
I think this is colossally dumb because it eliminates PRI and SEC isolation. I ...
user224284
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esp32 s2 touch sensor read
I have a problem with capacitive sensor. I have created PCB with 2 capacitive sensors. Everything is working fine and ESP32 s2 mini reading values as I expect while I powering up esp32 with type-c 5v, ...
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Seeking a good solution for mitigating the effects of high in-rush current caused by an AC-DC converter [closed]
Many AC-DC power supplies (say, 220VAC to 24VDC) have huge inrush current values. For example, a device might have an inrush current of 80A@230VAC. This raises the question of how to handle the ...
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