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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Is there a 3-phase to DC converter that draws current proportional to voltage?
Of course, 3-phase alternating current can be converted into a rippling direct current with a 3-phase bridge rectifier.
This design only draws current from the two phases with the most voltage ...
CommunityBot
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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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Full Bridge Rectifier Schematic Analysis
I am working on a circuit of an old 90's Terminal Applicator and noticed it has AC power coming in, then stepped down with a transformer, and then going to a pair of full bridge rectifiers. One goes ...
CommunityBot
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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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Inverter resistance and calculation confusion
I'm using a 1200W pure sine wave inverter and a series of extension cords to power devices in a mobile home. When charging my laptop, I noticed it was charging slowly. According to my battery ...
CommunityBot
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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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Design considerations for 3-phase AC-DC converter 60 vs 400 Hz
If I want to convert 400 Hz, three-phase, 200 VL-L to 28 VDC, how would I go about doing that compared to a conventional 60 Hz equivalent. In other words, what design considerations need to be taken ...
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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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How to power a 3V motor with AC?
I want to power a 3 V motor continuously for product demo purposes. Currently, the product is powered by 2 AA batteries. I would like to change the power source so I can plug it into a 120 V wall ...
CommunityBot
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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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