All Questions
Tagged with ac-dc power-electronics
16
questions
0
votes
0
answers
38
views
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 ...
- 11
0
votes
1
answer
74
views
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 ...
- 156
0
votes
2
answers
157
views
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 ...
- 443
0
votes
1
answer
129
views
Single Phase Active PWM Rectifier using MOSFET
I am using this H-Bridge Configuration to make active PWM rectification to control the output average Voltage by controlling the Modulation Index.
Here is the circuit diagram and the pulses of each ...
- 11
1
vote
0
answers
78
views
Best placement of bridge rectifier to allow DC/DC convertor to become AC/DC convertor. Does this inhibit surge and EMI performance?
I am trying to use the power supply: CQB50W12-72S12 with AC power without degrading the performance of its recommended filter and surge components. 120VAC peak voltage is 169V and I am worried that ...
user298907
0
votes
0
answers
101
views
Step down 5V Power supply for IoT
I am trying to create common DC power supply to support ESP32 Development board, Servo Moter (MG995) & Fan Motor (0.2A), all required 5V DC. I am considering Hi-Link 5V 4A SMPS Mini PCB Mounted ...
- 101
0
votes
0
answers
133
views
Why is there earthing (the neon bulb on the tester glows faintly) on Hi-Link PM01's output or another AC-DC wall adapter?
I have a 5V relay circuit to power from AC using Hi-Link 5v/3w PM-01 module, however when i tested with a tester (neon bulb type) there is indication of earthing (neon blub glows brightly) I have ...
-1
votes
1
answer
52
views
half controlable AC-DC converter
We are studying power electronics, AC-DC converters. Our teacher drawn a circuit with its graph like below:
Id: inductor or load current.
Vs: voltage of source.
Vd: voltage of load or inductor.
Iq: ...
- 67
0
votes
1
answer
77
views
Terminology of AC -DC converters
I would like to ask about the difference between the terms "AC-DC Converter", "DC-AC Converter" and "Inverter".
If I am getting it right, the "AC-DC converter" converters AC voltage to DC.
The "DC-...
- 143
1
vote
1
answer
341
views
Three-phase rectifier for offline single-phase supplies
First thank you for the help. I'll try to explain my self for this problem and sorry in advance if I'm not very clear, english is not my native language.
I'm making a universal PCB design involving ...
0
votes
2
answers
1k
views
AC TO DC Converter IC
I am using a small circuit which needs 5V DC input and total current consumption of the circuit is 300mA. I have been using the small size ac to dc converter modules, but now i am searching for a ...
- 21
1
vote
2
answers
1k
views
Am I safe working with a power supplier of 12 DC connected to the AC wall socket main line?
I'm working on an electronic home experimental project. But
I have always been afraid of the issue of electricity since it can electrocute.
My question is.. Am I safe working with a power supplier ...
- 29
-2
votes
3
answers
786
views
Modify The Circuit
EDIT: I want to produce +12 Volts as well as -12 volts output. It would be very helpful if someone can suggest changes in component values keeping the structure same. Thanks in advance.
1
vote
3
answers
785
views
Understanding a variable 220v AC to DC Power Supply
Can someone just please explain how and why the diodes D3 D2 and D4 are used?
Why D3 is single while D2 and D4 are in series?
How do we calculate the capacitance of capacitor required in a circuit ...
-1
votes
2
answers
882
views
sensing the existance of the AC power line [duplicate]
I have more than one AC power source and I want to detect which one of them is ON which one is OFF using a Microcontroller. So my question here is what is the cheapest and smallest in size method to ...
- 1