All Questions
22
questions
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
-1
votes
1
answer
154
views
AC-DC Schematic - Is this a Death Capacitor [closed]
Is this a death cap? I think it's not a death cap because it doesn't connect to the DC ground, but I'm not 100% sure.
Image Source: Hi-Link HLK-20M24 Datasheet - https://www.rhydolabz.com/documents/...
- 133
1
vote
1
answer
256
views
Selecting PFC topology
I'm considering different PFC topologies for the AC-DC stage of a device around 1 kW with aim of optimizing for efficiency and secondarily component size. This far I have identified following options:
...
0
votes
2
answers
374
views
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 ...
- 41
0
votes
0
answers
36
views
I wnat to design a circuit with a DC load but need help calculating the required circuit breaker, cable etc on the AC side of the power supply
I need to design a circuit with a knowing DC load of 24Vdc 20 watts. Now I have a Puls PIC 120.241D power supply that I can use. My question is I need to spec the protective device on the incoming ac ...
- 1
0
votes
0
answers
34
views
LT Spice simulation error: 'Time step too small'
Could someone get this up and running? Tried all the possibilities but it does not seem to work still.
Here I am just trying to simulate the linked circuit here .. PMP7763 design reference
- 1,885
0
votes
1
answer
209
views
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 ...
- 1
0
votes
0
answers
436
views
AC-DC converter to drive a dc motor (treadmill)
I would like to fix my treadmill.
I have connected a SCR voltage dimmer (WINGONEER AC 220V 4000W) in series with a full-bridge-rectifier (GBPC5006), to the dc motor.
When I move the potentiometer, ...
- 141
1
vote
1
answer
40
views
Power for 1 Device, 1 MCU, and 2 modules
I have four things I need to get power to. The first is a device that needs 48V and 30W. The other three include an MCU and two modules. Each have various pins that need either 3.3V or 1.2V. I’ve ...
- 11
0
votes
2
answers
213
views
AC-DC High voltage converter
I don't have much experience with power electronics but I'm trying to design a power supply with AC 220Vrms (311peak) to DC 1500V converter to charge a capacitor in 50 miliseconds (and keep charging ...
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
100
views
Laying out power electronics on analog signal board, practical advice
to keep this brief I am designing some audio circuitry and also need to design the power supply. The barrel jack in the schematic below sees 18VAC and I am converting that to +/-15V DC rails.
So to ...
- 95
1
vote
2
answers
666
views
AC/DC Converters in Series with the Same AC Source
Would it be safe to connect two identical AC/DC converters in series if they share the same AC source? My concern is that the negative DC output is grounded somewhere in the converters causing the ...
- 145
2
votes
3
answers
568
views
Please help me understand how to add AC power to my DC device
I have a device that runs off of three D batteries. I would like to be able to add a power cord so that I can plug it into the wall and run it off of that instead. I would also like to still be able ...
- 121