1000 Threads found on edaboard.com: 220 12 Transformer
If you can't find 12-6-0-6-12 configuration you can always use 2 smaller transformeres 6-0-6 and connect their primary windings in parallel (220V) and their secondary windings in series ..
Here is an example of multi-tap transformer from JAYCAR:
Electronic Elementary Questions :: 04-15-2006 19:33 :: IanP :: Replies: 1 :: Views: 1386
transformer - No centre-tapped (shown below). Look for 240/12, 230/12 or 220/12 transformers. If you can find 240/9, 230/9 or 220/9, it would be fine too.
If you use a transformer with centre-tapped, you can instead use a full-wave rectifiers (using 2 diodes only), the centre-tapped terminal of the (...)
Electronic Elementary Questions :: 08-24-2005 05:53 :: SkyHigh :: Replies: 4 :: Views: 940
Want to design the transformer the send me ur requirement like what amps, volt and wattage I will send u the data .
For the time basic data for 5 amps 220 to 12V-0V-12V. u need an 2inch X 2inch bobbin. For the 220v use 20SWG and 440 turns, and for 12v use 14SWG and 24 turns then again wire 14SWG and 24 turns.
Use ?E? ?I? soft (...)
Hobby Circuits and Small Projects Problems :: 10-29-2010 14:45 :: amjadali56 :: Replies: 11 :: Views: 4550
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 (...)
Electronic Elementary Questions :: 08-08-2005 01:52 :: quris_terris :: Replies: 2 :: Views: 2074
i want to design a supply without using a transformer
the supply is 220/12
i thought to but a rectifier then a resistor then a zener 9v
what i want to know does the supply can supply much current
and is it stable
"a rectifier then a resistor then a zener " will put you in troble and it is not safe. You may harm
Analog Circuit Design :: 01-08-2008 17:33 :: Johnson :: Replies: 5 :: Views: 1651
i have a step up 12 v to 220 v transformer.I have the question that is 12 volt input rms or peak to peak.
I mean should i have to apply 12 v rms or 12 v peak to peak to primary of transformer???
Power Electronics :: 12-30-2009 01:26 :: engr.waqas :: Replies: 1 :: Views: 1262
You can try this method:
connect a small 220/12 (or less) transformer between each phase and Neutral (I asume you have access to N or E, in isolated circuits the primary should be rated for 400V and connected betwee phases). If you want to monitor each phase separately you will need 3 circuits with OR function at the final stage.
Rectify the volt
Electronic Elementary Questions :: 02-01-2005 08:37 :: IanP :: Replies: 2 :: Views: 1714
Electronic transformers 200 W shematics (220/12 V) Feron transf. needed.
Can anybody upload it?
Service Manuals, Requests, Repair Tips :: 02-18-2005 15:12 :: Alex_TSU :: Replies: 0 :: Views: 863
I have a 12-0-12 transformer which is rated 5A.
So the power I shall get is 60W.
Suppose I try to get 24v from this transformer, should I derate the maximum current to 2.5A ? to keep the power constant at 60W ? There is no power specification given for the transformer.
I belive that I can still draw 5A as the t
Electronic Elementary Questions :: 05-06-2005 01:06 :: Lord Loh. :: Replies: 2 :: Views: 1582
You make the very very simple problem as large problem .. no need incase of implementing a DC power supply ( that you called AC to DC converter ) to calculate voltage drops or whatever if you will use regulator .. just i want you to know that voltage out from the transformer is root two its peak value .. so for example if you are speaking about 220
Analog Circuit Design :: 07-06-2005 20:27 :: ahmad_abdulghany :: Replies: 5 :: Views: 4456
I have got a 12-0-12 transformer that is rated for 5A.
But when I rectified, filtered, and added an LM338 regulator, I get not more than 3A current at 5v.
When I filter the ripple waves, I get a higher voltage ( I have not measured this with a true RMS meter.)
I calculate the transformer to be rated 60W.
But if I get about 18V (on non t
Analog Circuit Design :: 11-26-2005 04:55 :: Lord Loh. :: Replies: 6 :: Views: 1704
I have a question about a transformer. I need to know about the input voltage. If i were to buy a neon sign transformer that says it is an input (primary) of 120 volts and an output (secondary) of 15 kilovolts, do I have to give it 120 volts on the primary? The ending voltage does not matter. All I need to know is if I give it a different voltage,
Electronic Elementary Questions :: 04-26-2007 02:11 :: nuttaphong191 :: Replies: 14 :: Views: 924
i want to design a pcb bsed pwr supply... what would be economical as well as good in circuit...
a) use a transformer with outputs for 12 and 24 volts?
b) use a 24 vlt transfrmer and use a 12v regulator to get 12 v frm it?
Analog Circuit Design :: 03-08-2010 02:10 :: sherazi :: Replies: 7 :: Views: 832
how design 500va/12v(Primary volt-230v,secondry volt-12v-0-12v,frequancy 50z) inverter transformer design help?
1, how calculate primary current?
2, how calculate core area?
3, how calculate core loss?
4, how calculate secondry current?
please help me ? I am waiting your valid replay.
Electromagnetic Design and Simulation :: 09-09-2011 00:14 :: unelco :: Replies: 2 :: Views: 3020
I hve read the thread regarding Full Bridge Inverter with MOSFET and IR2110 gate driver but unable to understand that how the 12 Volts (single Batter) can be raised to 120/220 Volts without step up transformer.Any one should explain it. Thanks,
Electronic Elementary Questions :: 10-11-2011 06:35 :: ch wazir :: Replies: 1 :: Views: 1222
You don't say what the expected current is. Using a 220 -> 80V transformer and a linear regulator will get you any level of ripple you require.
Analog Circuit Design :: 04-12-2012 13:14 :: chuckey :: Replies: 4 :: Views: 882
i required a transformer of 24v for 2A load. i saw a transformer with 24v and 2va. so i don't understand that what is va? can i use 2va for 2A load?
Electronic Elementary Questions :: 08-24-2012 07:11 :: hiren_dave :: Replies: 11 :: Views: 756
Most probably a curent surge produces the voltage drop on ac main supply and your transformer has <1 VA power rating, try a different transformer 220/12 V ; 5VA ... or whatever standard type transformer that is greater than the one that you use now
Microcontrollers :: 11-14-2012 13:01 :: zsolt1 :: Replies: 4 :: Views: 281
My problem is not the noise from my PCB and the loads that i am switching.
The problem is the noise that travel from some other device trough the power line.
For example when my supply and the soldering iron are plugged in the same AC socket when i start to switch the iron ON and OFF the microcontroller starts to do strange things - reading a inp
Microcontrollers :: 07-06-2005 05:03 :: CM600 :: Replies: 7 :: Views: 1969
LM78L08 (TO92) has 100mA of limit, but LM7808CT (TO220) has 1A, some makers has 7809 too. You can improve the current add bypass transistors like
Using this approach the power current is supply by transistors, and I suggested exactly same thing for 12V and 9V.
Electronic Elementary Questions :: 09-11-2005 14:10 :: leomecma :: Replies: 11 :: Views: 6334
i'm designing a dimmer for a halogen lamp (15VAC 150watt) using a triac (BTA16) controlled by a microcontroller....and i want to know can i was a triac to control 15VAC the output of 220/15V transformer
Analog Circuit Design :: 02-29-2008 07:55 :: sedralabs :: Replies: 1 :: Views: 1798
hi i have two type of battery 12v 7ah ups battery & 6v 5ah lamp battery and 1 A 12-0-12 transformer.
i used to 2 diod in 14001 and 1 capicitor 1000 ?f 16 v. Can any body recommend good charging ciruit with over voltage protection.
MOD : Your thread was deleted. Reason: Indsufficient heading / subject.
EDA Jobs :: 04-12-2010 09:29 :: sunil8812 :: Replies: 0 :: Views: 508
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 (...)
Power Electronics :: 12-15-2010 16:11 :: steinar96 :: Replies: 0 :: Views: 1222
I read the quality of the sound will not be the same as an original 110V power supply built in.
Why? Using a classical 110:220 voltage transformer doesn’t change the quality of the sound. :smile:
Analog Circuit Design :: 06-29-2011 09:34 :: mister_rf :: Replies: 3 :: Views: 395
gentlemen i m having a 12-0-12 transformer. which gives 24volt ac at its outermost two lead and 12v ac with eighter of the two and the middle black one. now i want to regulate this voltage to 15volts dc for charging my 12v dc battery.
what i have tried is used the bridge rectifier to get 24 dc from outermost wires but can't configure the L7815cv
Professional Hardware and Electronics Design :: 09-10-2011 02:18 :: ziad khan :: Replies: 6 :: Views: 1281
i need electronic cuircit to charge 75v battery automatically by using thyristor , i have 220/75 transformer
Power Electronics :: 07-14-2012 18:15 :: الكضيب :: Replies: 0 :: Views: 270
when i am playing any song which has bass, sound gets distorted. how can i suppress bass component? with a band stop filter?
Your first schematic shows the output capacitor is 2200 uF. Although this would normally be sufficient, there's a chance your speaker is drawing enough power at low frequencies, to cause the capacitor to disto
Analog Circuit Design :: 08-14-2012 14:41 :: BradtheRad :: Replies: 14 :: Views: 1639
I am giving 220VDC to 12V zener through 22K resistor of 2W. but someone told that I should use double of 2W. How much wattage is good for continuous operation.Please tell me....
Electronic Elementary Questions :: 02-15-2013 05:37 :: siddarth.ghaste :: Replies: 2 :: Views: 411
Modern TVs are usually specified for 90 to 260 V AC input as all use a switching power supply inside which can accept the complete input ACvoltage range.
If your particular TV only is specified for 220 VAC, then a 110/220 V inverter should work, too. Only please make sure that the inverter does not generate overvoltage with a low-power load like a
Hobby Circuits and Small Projects Problems :: 06-27-2013 02:32 :: jiripolivka :: Replies: 1 :: Views: 310
i want to make inverter 12 to 220 volt
i can bulid transformer
what is the best for main transformer 500va is to roll dc(12 v) line i mean big diameter --primary line first
or to roll the small diameter(220) line
for heat and noise
Professional Hardware and Electronics Design :: 11-02-2004 11:05 :: newnewnewnew1 :: Replies: 3 :: Views: 1353
I need a circuit for 5v/12v DC supply from 110/220 AC. The common way is to use a transformer, a bridge and a voltage regulator. I know this way, but it is needed to be done without using trans becasue of its weight. The maximum current is 500 mA. A friend told me to use HV capacitors instead of Trans to reduce the AC voltage, the other p
Hobby Circuits and Small Projects Problems :: 01-11-2006 08:47 :: azerm :: Replies: 10 :: Views: 24576
I want to design a pic micrcontroller based switch mode(Ferrite Core transformer) Based 12 Volt DC to 220 Volt Ac 50 Hz Inverter. today i have downloaded a circuit from this forum but i dont understand. can any one help me to understand the circuit as well as required Microncontroller Code and also ferrite core transformer (...)
Professional Hardware and Electronics Design :: 04-16-2012 12:53 :: engmunir :: Replies: 0 :: Views: 1516
hi i need a Electronic circuit to convert 220 to 12 for turn on 3 led
Analog Circuit Design :: 02-01-2013 09:49 :: mo2_star :: Replies: 4 :: Views: 362
I have built my 12 to 220 modified inverter (1000 watt).
I use ATMEGA8 and IRF3205 in my design.
I am sure about 220V and 50Hz on output.
My design almost look like this.
In addition to feedback signal.
My problem is : this inverter Destroyed my three home fans (its driver board use triacs).
Electronic Elementary Questions :: 07-31-2014 17:29 :: abdoalghareeb :: Replies: 2 :: Views: 198
Who can to help me with a schematics for power inverter 12 v DC to 220 AC which provide 3500 Watt to outpout.
I want to use this inverter to supply my house (tv, mixer ,computer etc)
Professional Hardware and Electronics Design :: 08-14-2004 17:18 :: cristimihai :: Replies: 8 :: Views: 4277
I'm trying to convert a sat positioner box by replacing the 220 volt input transformer with a 120 volt input transformer.
I don't have definate specs on current, but something like this should be fine:
120 v primary
12 volt secondary at about .5 amps
36 volt secondary at about 2 amps
The 12 volts drives a small microcontroller (...)
Hobby Circuits and Small Projects Problems :: 05-01-2005 07:08 :: pcrider :: Replies: 1 :: Views: 1526
Hi from Rosary. I am looking for a transformer with the characteristic followings secondary primario 220v/240 12+12 24+24v with power of 3000w. where could I retrieve him/it? Or could you point out me some azienzas that he/she builds him/it?
Hobby Circuits and Small Projects Problems :: 05-27-2006 07:18 :: rosarios :: Replies: 3 :: Views: 1765
A fast solving (not a humour):
Put a small power (trying!!) 220v filament lamp serially to the primer circuit!
But you must measure the output voltage at your load (first a resistor only)!!
Electronic Elementary Questions :: 02-19-2007 06:13 :: zuisti :: Replies: 8 :: Views: 2903
here easy circuit. 12 Volt to 220 Volt Inverter 500W
Hobby Circuits and Small Projects Problems :: 04-08-2007 12:39 :: eanic :: Replies: 0 :: Views: 5802
Is it possible to step down the Voltage of the high voltage transformer from a TV to 220 to 240V and more Current (means more Amps aroind 20 to 30A) using a stepdown transformer.. guide me:D
Hobby Circuits and Small Projects Problems :: 09-22-2007 01:46 :: dmmahesh :: Replies: 11 :: Views: 1536
Hi frnds i hav to design a buck boost converter for 12/24 v dc input to 220 v dc output in matlab . can anybody plz help me i m new for dis
Power Electronics :: 11-19-2009 02:15 :: lapputappu :: Replies: 6 :: Views: 4347
i am having i/p variable from 24v to 47v rectified dc i/p, i want 12 v o/p,please
anybody tell any TO 220 PACK DC-DC converter which will give 12 v o/p,
my o/p current is 150 mA max,
waiting for reply
Power Electronics :: 06-11-2010 05:45 :: venuselectronics :: Replies: 1 :: Views: 573
i want to make a small invertor that converts 12 volt dc to 220 v ac at 50 hz i am facing problems some people are telling me that i should have a heat sink with my transformer if i want to run any appliance!!!!! also i am facing current problems that need enough current to run the transformer!!!!! need some help that should i have a (...)
Analog Circuit Design :: 12-17-2010 18:39 :: knark :: Replies: 4 :: Views: 410
check following links , they may be useful for you
12vdc-220vac 100/200watts sinewave inverter
dc to ac converter...
12vdc - 240vac power Inverter
Power Electronics :: 12-18-2010 22:19 :: hanif :: Replies: 7 :: Views: 2019
You can find the minimum relationship (number representing n1/n2) this way:
n1/n2 > (220×√2)/12 = 25,9.
Other than that, it's important that transformer core does NOT saturate when feed with 12V@50Hz input.
I would have choosen n1/n2 ≈30.
Power Electronics :: 04-27-2011 18:30 :: Prototyp_V1.0 :: Replies: 2 :: Views: 2227
The transformer is that used in an IDE psu 220 ac input, 12v 2A 5V 2A output.
It is an EI ferrite transformer with
a gap between the center leg of the E shaped part and the I part ,the center leg is cylindrical.
Its dimensions and number of turns for each winding are known (i have dismantled it).
I found IDE psu schematic (or (...)
Power Electronics :: 09-19-2011 04:20 :: koshary :: Replies: 2 :: Views: 472
what capacity transformer would be used to get DC 24 V from 220 V AC supply ?
Would there be any voltage drop on the bridge (rectifier) ?
Electronic Elementary Questions :: 11-11-2011 13:17 :: munzir :: Replies: 4 :: Views: 289
66166coverting 220v MSW 60 cycle 5000 watt converter to 110/220v split wave output
I bought the Generac 7kv propane generator which I have installed, it came with a transfer switch which is designed to switch from hydro to generator when 220/110vac plit phase hydro drops out.
I thought I maybe able to hook up my solar,win
Power Electronics :: 12-23-2011 12:24 :: musselbeach :: Replies: 1 :: Views: 967
remember conservation of energy?
Well, for an ideal transformer, the power into the primary = power out of the secondary. Since you want 220*5=1100 watts out, you need 1110 watts in, or 1100/12=92 Amps. But since you can't buy an ideal transformer, you're going to need to put more than 92 amps in. You need to know the efficiency of the (...)
Analog Circuit Design :: 06-24-2012 17:03 :: barry :: Replies: 7 :: Views: 297
how can I 220 v ac to 14or 25 dc without transformer?
I'm very new to this area. there is many chip dc-dc and 25 to 0-6 volt down converter.
but why there is no 220 v to 25 volt chip?? I don't understand...
Should I must use transformer??
I want very tiny converter. I want not using transformer (...)
Power Electronics :: 04-01-2013 15:58 :: tpetar :: Replies: 5 :: Views: 801