All Questions
16
questions
0
votes
4
answers
474
views
Is it possible to replace the electrolytic capacitor in a full wave rectifier bridge with a ceramic capacitor?
Why do we use electrolytic capacitors in full wave rectifier bridges? Is it because we can have huge capacitance with electrolytic type or is it because the output is DC voltage where polarity is a ...
- 19
0
votes
3
answers
468
views
Long term issues with AC/DC converter in always ON application
We have designed an "always ON" electronic home automation device which goes behind the switchboard (inside the wall.) This is the first commercial product that I am designing, so bear with ...
- 109
3
votes
4
answers
699
views
Problem with building -12/12 V power supply and AC/AC converter
At the beginning I wanted to point out that I don't know much about electronics and I'm just starting my adventure with it.
I recently bought an AC/AC 12 V power supply and to my surprise, it showed ...
- 33
4
votes
6
answers
1k
views
Is full wave rectified AC, without a smoothing capacitor, okay for switching a DC solenoid and a DC relay?
I have a circuit where the 24V AC secondary voltage of a transformer is full wave rectified to DC.
The only parts that this circuit is connected are some 24VDC solenoids and a 24VDC relay. The ...
- 567
0
votes
2
answers
453
views
Rectifier design calculation
I am working on a rectifier design. For that I am analyzing the formula for capacitor selection. I came across a video reference.
Io: average output current
Vo: Average output voltage
Vc: capacitor ...
- 307
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 ...
0
votes
2
answers
76
views
Determine the resistor required for a circuit [closed]
If I want to supply power to a device that is rated for about 2V using a DC source of 12V. How can I find the resistor o should use.
- 11
6
votes
1
answer
1k
views
Replace x2 capacitor with polyfilm? [closed]
I have a 12 V power supply that's not working anymore, so I opened it up and checked for faulty components with a multimeter, and I found two of them so far. One was a 1000 µF 25 V electrolytic which ...
- 690
0
votes
1
answer
2k
views
Understanding LED driver circuit AC to DC conversion
I am recently working on mains socket outlet type LEDs lights. They all have very similar AC to DC conversion circuit.
simulate this circuit – Schematic created using CircuitLab
C1 is a X-2 ...
- 27
0
votes
3
answers
2k
views
Can I quickly charge supercapacitors with a power adapter?
I am trying to make a super capacitor bank that I can charge is a couple minutes. It will output a 5V USB charge (aka a power bank.)
My materials: a 15V 8A power adapter, 2 Maxwell 2.7V 3000F ...
4
votes
3
answers
168
views
Given the diagram, where do I add/replace a larger capacitor for continued power while bike is stopped?
Following the circuit diagram, included as an image in this guide, where do I replace/add a larger capacitor for continued power while the bike is stopped?
My guess is that it should replace the ...
- 143
0
votes
1
answer
846
views
240V AC to ~380V DC converter at 3500 continuous watts
I have a single phase 5KW generator connected to a diesel engine capable of producing approx 3500 Watts of power
I need to convert the 240V AC to DC in order to send it to my solar charge controller ...
- 15
1
vote
1
answer
499
views
What does "Transient Response Recovery" means in the output specification of a AC-DC power supply?
I'm using a AC-DC power supply to provide 24VDC input to a PCB. A 100uF,35V tantalum is used as one of the filter capacitors for the 24V(same from supply) input of DC-DC regulator on PCB. In some ...
7
votes
2
answers
12k
views
Purpose of capacitor across transformer in AC-DC power supply? [duplicate]
I have been looking to buy a AC-DC 5v power supply module to power a mains relay in a circuit I am making. I came across a couple of different models on eBay and am trying to understand their basic ...
- 173
0
votes
3
answers
1k
views
link voltage and link capacitor basics [closed]
I am currently getting into the topic of electric vehicles and I often come across the terms link voltage and link capacitor.
simulate this circuit – Schematic created using CircuitLab
As far ...
- 241