47 Threads found on edaboard.com: 220v Ac To Dc Converter
I need a simple circuit for AC to DC converter of 220 V AC to 15 V DC (current rating: 3A) using a transformer for charging my VRLA batteries.
Thanks in advance
Analog Circuit Design :: 09.02.2010 09:33 :: ramadass :: Replies: 1 :: Views: 4255
1. For AC-DC conversion, the ripple is difficult to compress. But in DC-DC conversion, that is easier.
2. Telecomm equipment always use -48V DC, that is safe to human body. But AC, say 110V or 220v, is dangerous to operator.
RF, Microwave, Antennas and Optics :: 16.12.2010 00:52 :: tony_lth :: Replies: 4 :: Views: 693
I need some help, I need a capasitive circuit that converts 220v AC -to- 5V DC .
Can you help me finding this? Or can you give me an idea to construct the circuit?
Thanks a lot..
Electronic Elementary Questions :: 22.08.2005 03:16 :: amun :: Replies: 2 :: Views: 1580
It is a "flyback-converter" circuit that converts AC to DC in TVs.This circuit is called "switch mode power supply" which is different from linear this circuit there are a transformer,capacitors,resistors,diodes and transistors.They convert 220v AC to 120V,40V,6V,5V...DC whatever you depends on the ratio of N2/N1 of transform
Electronic Elementary Questions :: 06.02.2006 09:37 :: atlantis83 :: Replies: 5 :: Views: 671
Hi to all Friends,
I would like to ask some questions about converting 220v 50Hz to 110V 60Hz and I am sure that you will be giving best answers : Thanks in advance
Analog Circuit Design :: 10.01.2009 08:55 :: Medtronic :: Replies: 2 :: Views: 1631
do you mean AC power mains (220v or 110v) or just an AC signal in few volts or milli volts.
for high power AC voltage you will need to use step down transformer or attenuator to read it, for small AC values i think you won't need these things.
Microcontrollers :: 12.12.2009 13:37 :: elrayes :: Replies: 5 :: Views: 1855
I want to design a fly back AC-DC converter to supply a set top box...
In input I have Vin = 220v.
In output I need to have : 12V, 5V, 3.3V, 2.6V, 1.1V and 1V.
Please could you help me with some reference design or some ideas.
Hobby Circuits and Small Projects Problems :: 22.04.2010 04:29 :: Titou :: Replies: 0 :: Views: 1830
I want to make a circuit similar to attached circuit.(30 led 1W in series)
Is the circuit before bridge necessary?and how it could be useful?(how it is
Power Electronics :: 01.05.2012 02:45 :: yaghoubi :: Replies: 6 :: Views: 6891
Hi, can anyone give me a schematic or suggest a way of how to convert 220AC to 220DC , 20 to 30 Amp.
I will use the 220DC as a supply for my HHO cell
Help is very much appreciated!
Hobby Circuits and Small Projects Problems :: 25.08.2012 13:28 :: smart284 :: Replies: 7 :: Views: 3512
I looking for power supply circuit
that input 110to220v AC
output 12V DC 1A
but don't use transformer like mobile
wall charge, notebook.. etc.
a tiny circuit is very good.
How you call this circuit ?
I don't know keyword to search.
Because I am Thai.
Have a good day.
Professional Hardware and Electronics Design :: 14.11.2001 06:25 :: tong :: Replies: 6 :: Views: 3000
froggy so You want convert twice from 12V to 24V and next 24V to 220v hmm I don't think it's a good idea..
12V DC need to change 12V AC, next to 24V AC by 1:2 transformer (very large) next use bridge, caps to get DC and convert to 220v...
no this is very wrong idea....
here is an example simple circuit to convert 12V DC to 220v AC (...)
Professional Hardware and Electronics Design :: 07.03.2003 11:09 :: gulson :: Replies: 7 :: Views: 3846
i m using ADC 0804. plz tell me the circuit for connecting AC voltage to ADC input. further more i have 220/5V transformer. can i connect transformer output (5V) to ADC input. At 220v frequency is 50 hz. i m step downing 220v Ac to 5V AC using transformer. can transformer output (5v ac) be applied to ADC input means is there any problem in step do
Electronic Elementary Questions :: 08.08.2005 01:52 :: quris_terris :: Replies: 2 :: Views: 2067
I want to design an DC/AC power inverter. input voltage is 24V DC, output voltage is 220v/50Hz AC and output power will be about 1500VA. I want to keep overall efficiency at maximum. I want to use high frequency transformer, not 50Hz transformer. Switching frequency is >20kHz beyond audible frequency.
I want to use push-pull DC-DC conv
Analog Circuit Design :: 26.11.2005 08:58 :: happy2005 :: Replies: 5 :: Views: 2104
In my project, I need to design a Power supply to feed a magnetic field source. I need a stable 35V DC output and max 40A DC current to flow through the load. This means I need a SMPS with 1.5KW power. My input is 220v AC. Firstly I am researching the type of the SMPS topology that meets my requirement succesfully. My question is that, it is possib
Analog Circuit Design :: 30.09.2006 08:13 :: 10urfromBalkes :: Replies: 0 :: Views: 838
i need to make a power supply out variable 0-18v and 0-3A from 220v AC
what's the way i should walk through??
im little familiar with buck converter, and Motorola controllers and PIC controllers; but i prefer FreeScale-motorola-
i need to do it by microcontroller not a special IC,
the questions are.
1- is there's any other
Microcontrollers :: 25.06.2007 12:36 :: eng.hasan.power :: Replies: 3 :: Views: 3862
i need 12V DC to 220v AC 3000watt inverter circuits.
plz give me with small working circuits
Hobby Circuits and Small Projects Problems :: 16.06.2008 20:42 :: muhammad_kashif :: Replies: 4 :: Views: 2174
I've always found transformers annoyingly expensive relative to other circuit components. They represent a large base cost for cheap low power applications.
I've thought for a long time if a straight off the main line 220v to ~20V SMPS which is of low power (10-30W) could become much cheaper then the more comon rig of 220/~20V transformer and a
Power Electronics :: 15.12.2010 16:11 :: steinar96 :: Replies: 0 :: Views: 1214
build with CMOS 4047 that is the main component of this small voltage converter that transforms a 12V DC into 220v AC. 4047 is used as a astable mutivibrator, at pins 10 and 11 will have a symmetrical rectangular signal wich is amplified b 2 Darlington transistors and finally reach the secondary coil of mains transformer ( 2x10V / 60VA ).
Power Electronics :: 18.12.2010 22:15 :: ckshivaram :: Replies: 7 :: Views: 2006
If you want to generate from 220v AC. First, please use a full-bridge and LC filter to rectify it to a croase DC. Then use a flyback AC-DC converter to generate 50V, 3A output.
Analog Circuit Design :: 21.05.2011 00:10 :: leo_o2 :: Replies: 13 :: Views: 2729
i have the following schematic for 50hz 12v to 220v dc. i have foud it from internet but not yet tested it. The problem is that how i can adjust pin no.2 the duty cycle by giving feed back from output 220 to obtain pwm? does it only require modification on the pin 2 or whole circuit needs to be changed?
Power Electronics :: 03.07.2011 07:53 :: d@nny :: Replies: 8 :: Views: 3084
Several examples (for 5V use zener 5,1V instead 12V or other value) :
Professional Hardware and Electronics Design :: 04.08.2012 03:44 :: tpetar :: Replies: 7 :: Views: 793
I'm designing an off-grid single phase solar inverter DC to AC and i need help im not an expert on power electronics, my input is 12v~15v DC and I want 220v AC, I'm using a push-pull topology for the first stage DC-DC converter, to get the 12v DC to 300, and then using a H bridge to get AC, the problem is that in the first stage I can't
Power Electronics :: 04.11.2012 17:26 :: electro13 :: Replies: 2 :: Views: 666
I need to design a -48V DC power supply board which takes 220v AC as input for telecom system.
Any schematic or suggestions?
Professional Hardware and Electronics Design :: 19.09.2003 11:27 :: Laplace :: Replies: 5 :: Views: 2902
I was asked about 220v output from some readers. The output voltage of the inverter is decided only in the transformer. You can use the transformer with 220v as for primary(input) and 12V as for secondary(output). At my circuit, primary and secondary should be us
Electronic Elementary Questions :: 10.07.2006 22:20 :: IanP :: Replies: 20 :: Views: 8407
Of course, they using a technique with switches, and then averaging the output. We were doing this is my previous company for the AC-DC converter, which would convert 220v to 5v. Cannot exactly remember what the name was, but google it.
Other Design :: 15.01.2009 11:40 :: Sadegh.j :: Replies: 3 :: Views: 1602
There are many instances where hobby projects need the equivalent of a wall adapter. And the hobbyist would rather spend time on the main project than building a heavy adapter with a transformer and such! or a complex switching converter!
Is there an IC that:
1> Converts AC (110V and 220v) to DC (say 3V to 12V) in an efficient, as-light-as-a-ce
Hobby Circuits and Small Projects Problems :: 11.09.2008 07:27 :: akshay :: Replies: 6 :: Views: 2016
A working Single Phase Inverter schematic (220v and 6Amperes)
can u help me in making a variable frequency drive . Any FPGA based code with complete schematic design .Please
Electronic Elementary Questions :: 31.05.2009 03:25 :: Rock0n :: Replies: 5 :: Views: 1137
19V @4 Amps SOUNDS like a LAPTOP power Supply! . In any case ..You should be able to buy one with a 220v or 110V input depending where you live .Now to convert from 12 V DC to 110 or 220v AC.You need a Voltage inverter .any small one will do ! ( you only 100 watts)..
This is the cheapest solution .Now to design a straight 13.5 V to 19 Volt .
Hobby Circuits and Small Projects Problems :: 22.07.2009 20:53 :: eltonjohn :: Replies: 8 :: Views: 6964
You use an inductor to boost the voltage to 250v or higher and then through PWM full-bridge converter, turn it to 220v 50hz.
Power Electronics :: 30.12.2009 05:37 :: Tahmid :: Replies: 4 :: Views: 4551
I want a inverter circuit diagram with operation using mosfet that input 12v dc and output will sine wave 220v ac with 50hz frequency.
please send to me it as soon as possible.
Electronic Elementary Questions :: 15.01.2010 07:45 :: Md.Atiqur rahaman :: Replies: 3 :: Views: 3334
Maybe you can find some help/idea for your project...
DC to AC Circuits and Inverter Circuits,
Inverter 12V to 220v 300W by NE555,2N3055,
Power Electronics :: 14.03.2010 05:43 :: karesz :: Replies: 5 :: Views: 4050
I'm trying to integrate my generator into grid thru. a AC/DC/AC converter and then a choke. My generator is: 220v, 7.5HP, 21A. DC bus is 400V. Suppose only 30% of nominal power transferred to grid, what's the current requirement on choke current on each phase?
Is it like, 7.5*746*30%/400=4.2A ??
Also, how to choose choke inductance value?? Just r
Power Electronics :: 13.05.2011 13:59 :: yzou_ua :: Replies: 1 :: Views: 740
from given picture 5v(20ms period) pwm wave converted to sinwave and which trigger mosfet to get 12v sinwave from 12v dc ,which is given to primary of transformer and o/p is 220v ac sinwave (20ms period).
how can i change amplitude of o/p by changing Pwm (what change required),without changing transfmr tapping.
Software Problems, Hints and Reviews :: 08.10.2011 17:25 :: ismu :: Replies: 4 :: Views: 1263
What is the current rating of your battery if your using it as input ? anyways U can use IC-4047 (LOW-POWER MONOSTABLE/ASTABLE MULTIVIBRATOR)...
Check this link
Hobby Circuits and Small Projects Problems :: 15.11.2011 04:29 :: Santosh13 :: Replies: 2 :: Views: 1498
PFC stages are generally boost converters, otherwise they couldn't sink a continuous (sine shaped) current for all instantaneous input voltage levels. A 60 to 220v boost factor doesn't give best efficiency, but should basically work.
Power Electronics :: 30.12.2011 13:28 :: FvM :: Replies: 12 :: Views: 1007
I need a transformerless power supply. 220v AC 50Hz to 12, 15 or 20V DC. I found a circuit and just saw this converter LNK306GN. I get the chip and try the circuit but i cant get the DC voltage. You can see my schematics that i've attached.
Firstly, i tried not to use zener. In application note (AN37) it says for buck convert
Professional Hardware and Electronics Design :: 05.01.2012 05:19 :: ajanogi :: Replies: 1 :: Views: 1488
I have not brought anything so far. I am planing to use white LEDs. Yes i am looking for transformer less circuit, but my worry is it safe to use for this circuit.
20 LED's (1W each with 350mA and 3V) in series means the voltage required is 20x3 = 60V with current 350mA.
You will require a AC
Hobby Circuits and Small Projects Problems :: 23.08.2012 02:47 :: vedagarbhamsandeep :: Replies: 20 :: Views: 2028
Want to build a circuit which can increase the low voltage (i.e. of input) level from 180V AC to 220v AC or 230V AC & limit the voltage level to 220 V Ac or to 230 V AC if the input voltage level is higher than 220 V Ac or 230 V AC so that device or equipment stay safe and keep working ??
Electronic Elementary Questions :: 29.09.2012 15:14 :: munzir :: Replies: 11 :: Views: 368
I have bad 12v to 220v converter which I'm trying to repair. My friend reversed the supply leads on it some time ago and it doesn't work since then.
It's classic push-pull converter with two transformers, and 3 IC's ( 2 PWM and 1 quad comparator). PWM chips are 7500's which i replaced with TL494 and comparator is D339. So, (...)
Power Electronics :: 26.02.2013 16:32 :: Iscariah :: Replies: 1 :: Views: 437
But in that thread i didn't find the solution.
All the people are saying that design is having lot of problems.
And also i don't have knowledge about micro controllers.
So please tell me the possible solutions.
Circuit is working fine except charging topology.
Charging current is constant and can adjust with trim pot.
Power Electronics :: 27.06.2013 11:23 :: pnjbtr :: Replies: 11 :: Views: 742
Hello every body I would like to make a DC-AC 220v from 12VDC I want to use at the output the MOSFET F3205 (six of them) or replace those ones with the IGBT
6W20NC60VD (2 of them which makes a half wave DC-AC converter);between those two stages of MOSFET and IGBT i want to use the High frequency transformers;can you plz help me to think how inter
Power Electronics :: 31.07.2013 12:06 :: john120 :: Replies: 0 :: Views: 278
No pins of 8051 can accept analog voltages. So you need an adc converter. If it is a matter of reading the applied voltage only, then why don't you rectify the supply. This way you can rule out the negative half cycle... Use a rectifier & a good filter, convert it in dc, read through adc, multiply by 44( if step down is 220v - 5v) & divide by 1.414
Microcontrollers :: 09.08.2013 06:52 :: Genovator :: Replies: 2 :: Views: 190
It is very possible. You should monitor the temperature of it during your first charging to make sure. Make sure you use a transformer type converter. These are sold in travel stores. However in the USA you may only find ones that convert foreign 220v to the 110V used by items sold in the USA. You can also get them from electronic distributors
Service Manuals, Requests, Repair Tips :: 27.05.2004 16:34 :: flatulent :: Replies: 3 :: Views: 2505
No its not like that......MOSFET is just a switching device, its can't convert 12V into 220v. In simple words... UPS firsts convert 12volts dc into ac(switching at 50Hz, here is done by MOSFET), this ac is fed into step up transformer to get 220volts. For further details have a look at some power electronics book.
Hope this helps
Electronic Elementary Questions :: 09.12.2005 23:34 :: Jack// ani :: Replies: 2 :: Views: 2860
I have a 220v / 30V 10A + 15V/0,2A AC transformer
Analog Circuit Design :: 19.04.2011 04:48 :: jopapadogr :: Replies: 4 :: Views: 1815
I need some assistance regarding step-up transformers.
I used to live in Chandigarh, India & the voltage here varies from 220v-230v. But recently I move to the outskirts of the city & now where I live has a lot of voltage issues. Due to this one of my computer UPS got burnt, literally. I need to power up my 1200 watt computer for which I am
Electronic Elementary Questions :: 13.06.2011 17:09 :: 666shan666 :: Replies: 5 :: Views: 896
I have to design a power supply with universal input from 85v-280v. the PS should be isolated. the anticipated wattage is 250W. I have decided to implement a PFC stage using MC33262. or design using fly-back topology. the output needed is 220v. this supply will act as a automatic voltage regulator. now plz suggest me what should i follow, the (
Power Electronics :: 11.03.2013 13:41 :: naseerak :: Replies: 2 :: Views: 351