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110v to 12vdc conversion

Ok so long story short i want to make a serious home theater system. i have all the amps and speakers, but they are from a car. so i will need to run them from 12ish volts from my home outlets. so i cam wondering what kind of adaptor i should be making or using. i see pre-made ones that have an output of 12v with their amps ranging from 3-15 and watts from 3 to 300. i am no electrician and have little electrical experience, so i am wondering if i should go with more or less amps and watts, i dont need to fry anything as the amp and speakers i have are expensive! THANKS!  

Topic by mrmoose87    |  last reply


11w soldering gun connected to a 110/220 inverter what would be the total electric use.?

11w soldering gun connected to a 110/220 inverter that is a transformerless kind for inductive loads, 3x4 inches,rated for2000w, I think there is only a single component in it,  what would be the total electric use.? after connecting this 110v 11w soldering gun to 220v ? thanks you in advance, my opinion inverter eats up some watt as well. Cheer Al Boz

Question by celalboz    |  last reply


Simple plug-in 220V to 110V converter

My garage has either electric heat or none at all and my heaters blow the circuit breakers every time I try turning anything else on. HOWEVER I have a 220 circuit originally for a welder that I imagine would handle them easily. So, does anybody have a way to make a simple, plug-in adapter from a 220 circuit I seldom use to be able to plug in 110 heaters? (all the circuits are in the US)

Topic by wrymind    |  last reply


Can I convert an appliance that runs off of 220v to run off of 110v? Answered

I am going to move from Germany back to the states soon and I would like to avoid selling some of my larger and more preferred electronics.  I know I can buy a step up converter but I don't want to have a giant black box sitting in my living room for the next five years.  Electronics is not really my thing but I can learn and figure out what I need to.  I just need to know if it is possible to permanently convert 220v to run off of 110v.

Question by JohannBloch    |  last reply


Homemade Transformer?

Hi, Moved over to the UK from the US a couple of months ago and my fiancee has brought with her a 110V tea-steeper with her.  Apparently it possesses magical properties that cannot be reproduced by other local appliances.   It will blow out the fuse in a 500-watt transformer, which is the largest that I have.  My question is, why are these things so expensive?  I have very limited knowledge about them, but from what I do know they don't seem that complex.  Some of the higher wattage transformers are the same price as a netbook computer!  What is in them that costs so much? Also, can you make your own?   Thanks -Andrew

Topic by knightop    |  last reply


conwerting a laser

I have a guide line laser want to convert to laser cuter if it is possible need help the laser is CARTER MODEL#LGL-100S SERIAL#573 MFD JAN 1982 THIS LASER PRODUCT COMPLIES WITH DHEW/BRH RADIATION PERFORMENCE STANDARDS 21CFR SUB-CHEPTER J 120VAC

Topic by drgeorge  


custom electric (110v) timer

I am looking for a timer, much like the kind often used for lamps when you are out of town... set up a timing loop and it cycles power off/on to a device plugged into it. My problem is that all such devices I can find operate on intervals near 1 hour (the quickest I have found has a minimum 15 minute off/on cycle). I need to switch off a device for a few seconds, once each hour or so. My current rough estimate is to go ~59 minutes 40 seconds on, then ~20 seconds off. I may need to tweak that though so something programmable would be great. I am not an electrical pro, but neither am I a stranger to circuits or house wiring. I know all the safety precautions and can solder/assemble components... I would just not be able to come up with my own schematics to create something like this. If anyone is aware of an existing device, I could purchase it... but I would sortof like to DIY it anyway.

Topic by karossii    |  last reply


How do I make a set of say 4 incandescent bulbs pulsate in brightness?

I would like to make a display where incandessant bulbs throb like they are being powered by a varying vlotage. The bulbs would be 75 watt or 25 watt depending on what I end up doing. I am even considering some 30 watt edison type bulbs. How do I make a controller for something like this?

Question by spacehead    |  last reply


110v generator maybe 230v?

Just won a generator on ebay (Subaru Robin MG 750) it is a 110v generator (looking at the 16A yellow socket) and the voltage. however on the side it says 220v-50HZ  It has 6 cables comming out the generator: Red Blue Black White Green Green

Question by ddeacon1    |  last reply


Reducing 110v transformer output? Answered

Hi all, as stated in the title I need to reduce the output of a 110VAC transformer. I'm using a US graco spray gun that is 60hz, and I understand that if I reduce the voltage to 90 this will compensate for the UK 50hz system. Any help is greatly appreciated

Question by dimmaz88    |  last reply


How can i combine these two instructables for halloween prop?

I am making a haunted house, and want my pneumatic props to be triggered once the laser beam is broken. I have followed the instuctable for a laser tripwire  https://www.instructables.com/id/Another-Arduino-Laser-Tripwire/ and the instructable for a 110v controller  https://www.instructables.com/id/Yet-Another-Arduino-110v-Power-Controller/ both work great seperately, however what i would like to do is have 4 lasers, and each one controls one of the 4 outlets. can anyone help me in code and schematic? i would greatly appreciate it. Sam

Question by Zukibeast    |  last reply


I am looking for a 220v/50Hz to 110v/60hz step down transformer - any help please? Answered

I want to purchase a computerized sewing machine for my wife from the US, however this machine is VERY sensitive, and manufacturer does not recommend running it on different voltage than 110v. I have checked with them, and the required input for it is:2.4  wattage. The amp is .02 and the voltage 120. I have not managed to find a reasonably priced step down transformer which can also transform the frequency - only one, but it costs a few thousands of dollars :)Please, help! This machine is not sold here, not in Europe, not even similar model. One answer I've got from a company specializing in such reliable converters: Since your sewing machine is computerized and very sensitive we do not feel confident that it will work properly with a voltage converter because of the cycle or hertz difference.  Here it is 60 hz and Israel it is 50hz and converters do not change the cycles. your sewing machine may be adversely effected. The machine I am talking about is this: http://www.amazon.com/gp/product/B003EPLBMO/ref=gno_cart_title_1 Thanks!

Question by Carmageddon    |  last reply


Make some noise with 110v sensor

I have a presence sensor 110v (lights a lamp) and I need make some noise too. I already insert one ac adaptor 12v with a resistor anda a pc speaker and make a irritant noise, anyone have othe idea thanks

Question by Melara    |  last reply


110V 200-250Watt dummy load

As the title says I`m trying to find a best solution for a 110V 200-250Watt() inductive or resistive dummy load. Small size 4x4", rugged , as lightweight as possible and the least emitted heat . Incandescent light bulbs are not suitable. What are my options. Thanks guys. 

Topic by DainiusG    |  last reply


need help on 555 110v timer.

Hey guys w up? i`m asking for help, i`m trying to develop (i have one, similar) a 110 v timer based on the 555 (or any other) i have seen many timers on the web but they run on 9v batt and i do not have room for the transformer , can u help me ??? all (just nothing) all i need is the electronic diagram . i need the timer to work on 110v and run two different cycles a: 90 seconds b: 180 seconds and cut the power. (untill you press the push button again) i have an electric diagram. tx so much. if you need help w something (i`ll try to help you if i can) even if you can`t help me ..ask e have nothing to loose.

Topic by scopevisions    |  last reply


converting 110v christmas lights to 12v

In a web search looking for 12v Christmas lights to run off my small solar system, I found this; http://www.fly.net/~thundt/xmas12v.htm This looks very straight forward and easy enough to do.Has anyone here tried this?I bought a small set of solar powered at Target ($14.95). Way under powered and last only a few hours. It's going back today!This looks like a way to get brighter, longer lasting lights and I don't have to run my converter. My 160 AH battery should power it up nicely, I would think...Think I found a project for this afternoon!

Topic by olddawg    |  last reply



how would i create strobe lighting with and "emergency Exit" sign

How would i go about making the emergency flood lights on an "emergency exit" sign w/ battery pack, strobe or flash with 110V power supply? any suggestions. thanks

Topic by braker-ninener    |  last reply


How can I build a 220V welder using 220V microwave oven transformers? Answered

I read TimAnderson's Instructable on building a homemade welder from microwave oven transformers, but that instructable is for a 110V setup, what should I change to make it work using 220V transformers on 220V. (I already gathered all the materials...)https://www.instructables.com/id/Build-a-Microwave-Transformer-Homemade-Welder/ ....Link to TimAnderson's homemade welder?

Question by inserbot    |  last reply



How to step down 110V DC to 46V DC?

Little about the beast: This is a home build rectifier made of x6 KBPC3506 which comes out to total capable throughput  of 210Amp This THING connects to an outlet via thick power cable. I measured the output when plugged and it is 110V DC. So this got me thinking is there an easy way to step down 110V DC to like 46V or 60V? WHY? Well I have an electric e-bike and just as a fun project I wanted to see if it is possible to replace the battery with portable gasoline generator and then AC 110V from generator turn it to DC and step it down to a little more than 46V. Of course I will have little baggie at the back of the bike :-)

Question by Redion    |  last reply


diy 110v AC screw-in LED lightbulb?

I'm sort of an electronics newbie, but I'm wondering if anyone knows of any designs to make a 110v AC LED screw-in bulb? It seems all you would need is a full wave bridge rectifier, a resistor(?) to lower the voltage, some LEDs, and some variation on a screw-in base to make a home-made LED bulb. Am I wrong, or shouldn't that be relatively simple to build? Any thoughts? Thanks, Matt

Topic by matthew6    |  last reply


Is there a relay that uses a 110v trigger for a 12v output? Answered

I know that this is probably the most backwards way to do things (and yes, I know, probably extremely stupid [but I'm also new to relays..]) , but I am in the process of trying to make a heated platform for my RepRap (I have gen 6, thus the reason for this). I have a PID controller, and I have the board running off an ATX power supply. So, what I would like to know if there is a relay that can use the 110v the PID controller to turn on/off the power from the ATX to the heat bed.  Thanks in advance! 

Question by DoctorWoo    |  last reply


How can i adapt this to work for 110v?

I found and made this but i would like to make it work with christmas lights so i could just plug it into an outlet and plug the lights in, https://www.instructables.com/id/Music-LED-Light-Box/  however the TIP31 transistor only works up to somewhere around 45v is there any way to get around this?

Question by gantyman    |  last reply


Undercabinet LED lights from 110v source

Hello, Ever since i moved into my current home I have wanted to put in under-cabinet lights in the kitchen. Its a small kitchen but the current fluorescent lights are just not giving me the light I'd like.  Powering the LEDs is my only concern. There are two under-cabinet areas each with one type of florescent light fixture with a normal 110v power line running into each light directly from a small hole in the wall (all hidden of course under the cabinets). There is no power outlet associated with these two lights. There is one outlet along the wall but I would not like to use this if possible as it powers the kitchen appliances, and it would show the power cord from the lights (Id love for these new LEDs to remain hidden.) I understand to use a 110v source I would need a LED transformer of some kind, I have seen these for sale, but I do not have an outlet that this transformer can plug into. Like this: http://www.ledstrips8.com/20-singlechip-smd3528-waterproof-aluminum-shell-rigid-led-light-p-118.html Is there a way to connect a type of transformer to this direct 110v line? Would I splice the plug off the end of the transformer and just crimp it to the 110v source from the wall?  Like the end of this transformer: http://www.ledstrips8.com/led-power-supply-110220v-ac-to-12v-dcindoor-use-p-70.html Im currently at work but if pictures help I can upload them later. Thanks!

Topic by billium28    |  last reply


Using 110v 60Hz Soldering station with 240v 50Hz?

Hi, I have recently acquired a 110v 60Hz Soldering station but i live in a country which uses 240v at 50Hz. I can get a stepdown transformer to convert the voltage (can choose between 50W and 1600W), but i am wondering will the different frequency damage the soldering station? The soldering station i got is https://www.sparkfun.com/products/10707

Question by michaelgohjs    |  last reply


Is it possible, to supply power to dc motor using a rectified step down 220v to 110v transformer?

Hello experts, I need your help please. I have an old Dremel hobby drill. It was rated for 110v but accidentally plugged to 220v mains and blew-up its built-in rectifier and varible speed control. The motor still works. I tried it with 12v dc power supply but it rotates very slowly. If it is possible at all, how can I power it using a rectified step down 220v to 110v transformer. Thanks.?

Question by felixdjac    |  last reply


can i use a 110v inverter connected to a 2000w travel converter to get 220v and power a 220v fridge Answered

I might need to do this when there is an electric outage, can we connect an SLA to inverter (110v) to a converter people use when they travel to 220 v countries?

Question by celalboz    |  last reply


STEP DOWN TRANSFORMER 220v/50hz to 110v/60hz

I have some cordless power tools by Craftsman. Goes without saying they are 110v/60hz. Problem is I live in Australia where we have 220v/50hz. I need to purchase a step down transformer for the battery chargers. Could someone please tell me what spec step down I should get. i.e what output it should have. The biggest battery is 19.2v. Thanks for any advice

Question by Punzi    |  last reply


audio amplifier for singing arc speaker, 110v design

Okay, I'm planning on starting on a plasma speaker, I know somewhat how I want to build it. My neighbor has one of the old school neon sign transformers for sale, he wants next to nothing for it. So I intend to use that to simplify finding materials. I am incapable of designing a circuit, so I am asking for help. What I need is for somethng to control the 110v for the transformer based on the audio input. My alternate idea was to use two NSTs and have them become a stereo channel unit. I do prefer that idea myself. I simply have no idea how to control the sound from the arc without taking the arc out. Honestly, my electronics knowledge in circuit design made me think a really big relay would work. Until I realized that was stupid. Anyways, my preferred idea is using a project box to contain a circuit, fused around critical areas to prevent the music device being blown up on accident or anything else bad happening. A stereo plug, with one transformer being the left, the other the right. I also want to try to drive either the low voltage or the 110v computer cooling fan type things so that there is an airflow through the arc.  Please help me-I can't design circuits for the life of me, and I would rather this work out. Thanks!

Topic by Nyanman  


Questions about converting 220 to 110?

I am working on a machine which uses two heaters and a cooler.    Here is the electronics problem.  Right now I have a 15 amp 110v refrigerant compressor and 2 15 amp 110v heaters on the machine.   45 amps 110v.  That means I have to plug this machine into three different 110v plugs on different circuits.  There are cords going everywhere and the whole thing looks messy.  I am sure there is a way to plug this machine into 220 volts with one cord.   The machine all together uses 45 amps 110v which is 4950 watts.  I found a transformer which should do what I want it to do.   http://www.amazon.com/LiteFuze-LT-8000-Voltage-Converter-Transformer/dp/B009AI9KDG This transformer can supply up to 8000 watts from 220v.  This begs the question...How many amps can I draw from 220?  I believe it is 30 amps which is 6600 watts.  I think this would work because the machine draws 4950 watts all together.  But I need advice from the online electronics community.  Will this really work?

Question by Noblenutria    |  last reply


How to turn on a 24v solenoid when a 110v unit is shut off? Answered

Ok, so an odd ball scenario. I need to open a 24v solenoid(lawn sprinkler valve NC) for 5 minutes after main power(110v) has been shut off to a device. I have the ability to piggy back on all the power terminals, so it could have constant and switched power. I feel like this kind of thing will exist somewhere, I just can't find it at a Home Depot, and can't seem to google the right key words. Thanks to anyone who can point me in the right direction!

Question by Hack/Slash    |  last reply


DIY 9V DC to 110V AC inverter, and/or 9V DC to 19V DC transformer?

Hi, I want to build a 9V/110V DC/AC inverter, so I can power up things like my laptop with a car lighter socket. It would be always nice to be able to use electronics in the car when I'm traveling... What kind of components will I need and how would the schematic looks like? If DC/AC is a hard task, how would I go about building a 9V/19V DC/DC transformer so I can at least power up my laptop on the go?

Question by ddolbi1    |  last reply


LEDs

Can I connect 20 leds together on 110V tension so they won't fuck up in some time? If so, how?

Topic by guilerms    |  last reply


Possible to convert 110v ~ battery charger to 48v charge controller for wind/solar?

Here is the item in question. http://tinypic.com/r/2rfr2px/6 I'm not even sure if it's a smart or dumb charger. I also can't seem to find any schematics for a 48v charge controller anywhere. =o/ Thanks for any help anyone can give!

Topic by StudioAfterlife  


How do I wire a speed control with a a blinker using 110v indicator lights ?

I have 15 110v  red indicator lights and need to light these one at a time using a speed control  and blinker control to simulate a heart beat. This monitor is the same that you can see in the Classic Monster Movie ,"The Bride of Frankenstein". Any help would be appreciated very much.?

Question by 1stcontact    |  last reply


How can I connect a 110V 12" 8W neon lamp in a PC case without having an external cable? Answered

I am going to mod my PC case. I probably can't get this http://www.amazon.com/12-Cold-Cathode-Case-Lights/dp/B000BUDHOA/ref=sr_1_6?ie=UTF8&qid;=1302654235&sr;=8-6 since I live in South America, and I have only found an 12" 8Watt 110V blue neon lamp for $8. It would be fine, but I don't know any effective and practical way to get 110 from inside the computer without opening the power source... Please help!

Question by colorex    |  last reply


A speciel stepdown converter?

Hello guys of instructables! I'm writing on this forum, because I think you the only guys that can help me! My situation: I'm from Europe (Nordic part), and our voltage/hertz is 230v 50hz - I think. What I'm trying to do is using american clippers here in my country, but what I've experienced is that it really going to work because the magnetic motor in the hair clipper is going to make alot of noise and overheat, even tho if you used a stepdown converter (230v to 110v) My request: But yesterday i saw a guy on youtube which said that he had made a revolutionary stepdown converter, that would solve the problem and make american clippers anywhere in Europe - without overheating and noise. Here is the video:  http://youtu.be/I2Ybj1BKjYk?list=UUpnyPxtX9XwOJZbN8qwVoLg And here is a ebay link of the converter: http://www.ebay.ie/itm/181496829039 I think its a bit of a overprice (119.3575$) and I was wondering if there is an alternative, where can either make it myself or buy one as good as that one with same specs and quality.. I hope you guys can help me, I'm a bit of unexperienced guy when it comes to electronics so bare with me.. - josh

Question by joshua1993  


Help modding an electric lawn mower to run from a car battery?

Hi - I have an electric lawn mower that uses US standard 110v wall current. I'd like to create a battery power conversion "harness" so I can power the mower from a deep cycle car/marine battery instead of wall power. I have a converter that's intended to convert from car cigarette lighter socket power to 110v for powering things like laptops while inside a car; would it be possible to simply connect leads from the cigarette socket converter to the car battery, then plug the mower into the converter? is there another type of inverter/converter device that would more usefully work to convert battery power to 110v AC? Thanks in advance for any suggestions... Kern

Topic by kerns    |  last reply



need outdoor motion sensor switch with by pass feature for pot lights?

I'm looking for a reliable outdoor dome motion sensor switch with bypass feature for pot lights.  best if I can bypass with flipping the indoor switch and reset by power off for a while, will settle for wireless bypass by a smart phone or last resort: a wireless remote from inside. look forward to your advice with appreciation and thanks the motion switch should be for 110V ac 200W. prefer 250 w or above

Question by gg89    |  last reply


How do I control this motor? (speed)?

I have a motor 110v 1/3 hp hz 60 phase 1rpm 1750  class B is posible

Question by 3strada1965    |  last reply


How to add a 30 minute 110v timer into an existing wall heater?

My bathrooms are heated by in-wall electric heaters that are controlled by a rheostat type knob on the devices themselves.  I find that they often accidentally get left on for long periods of time (a safety and energy usage concern).  As such, I would like to add a timer into the existing devices that would cause them to shut off after 30 minutes (the timer would be reset by turning the heater off).  I know that they make wall switches which can accomplish this task, but due to limited wall space I would prefer to not have to wire a new switch to the heaters.  My goal is to find a small circuit board that I can add between the existing control knob and heater.  It would need to be small and heat resistant so that it could be placed inside the heater itself.  Anyway, I have been trying to find such a device online but haven't had any luck finding one that runs on 110v and can be added directly into the existing circuitry.  I was hoping someone on this site could point me in the right direction. The heaters are both tied to the same breaker and are the only things on that circuit so another option would be to place the timer near the electrical panel.  However, this seems less desirable to me as you wouldn't be able to turn on the 2nd heater if the 1st heater had been left on and already tripped the timer.  Please correct me if I'm wrong about this.

Topic by jenkins3333    |  last reply


Is there a cheap creation to make a 110v 9-45 mA power system?

I am looking at three ways for this right now. My preferred long game is a solar cell block (minor one, i am not sure of the power output calculator cells have, but along that size I am guessing) that feeds into a digital sine wave form for my output ( low end of power is fine.) I need the sine wave chips to do the build on a +/-110 V wave then, but the ampere I need is ultra tiny by current standards. The total power of this concept is about 1 watt. Perhaps a amp limiter off a wall circuit second as my second but probably easier choice. Reading up on some interesting theories, but to test them accurately, I need this base component(s). I will post the results of what I do with the device pas or fail, as I think it will be important to some of the current over unity power system theories bouncing around to have good well documented answers.

Question by JBrenton    |  last reply


Battery power

I am attempting to calculate my amp need for my garage in order to set up a 12v battery system. Using the formula; Watts / voltage = amps drawn, I have hit a question. If using a 12v battery system and converting to 110v, should I be using 12v or 110v in the formula?Example; 100 watt light bulb / 110 volts = .91 amps. Nice!But if I use the 12v; 100watt light / 12v = 8.3 amps.I'm believing I would be drawing 8.3 amps from the battery to power this light.Plus the converter draw...Please tell me which is correct?

Topic by olddawg    |  last reply


can anyone tell me how to make lite up house numbers?

I want to know if anyone knows how to make a lit up house number w/ or without 110v

Question by the5thone    |  last reply


I need to build a wireless switch, I would like to be able to access the single on/off switch via my home network?

I'm looking to just control one on/off switch, using a low voltage to control 110v through a SSR. I would like to control up to eight relays but be able to increase or decrease the amount, depending on how many things I need to control. Software is not an issue, the hardware is were I'm having difficulties. I'm looking to keep this cheap, hopefully.  So in conclusion, a single on/off wirelessly controlled switch on my home network, that supplies low voltage to a SSR to control a 110v.  Thank you, Erik 

Question by eam1915    |  last reply


Does Replacement Batteries Harm Cordless Tools, Or Just Not Worth the Savings in the Long Run?

Should I stick to Makita HandBook for Cordless 18v LXT stating "Only use Makita Batteries and Charger", or go for the replacements? Same goes for  "StepDown Transformers [220v to 110v] can harm tools etc...etc..." I can dig the reason if it where for corded tools, but am I really jeopardizing my DC18RC 110v? Which Replacement Batteries Do You Recommend? Does it goes the same way for such rechargeable batteries (and chargers) that are made in China, that as the description specifies, made from China, so don't expect much?

Question by GiladM1    |  last reply


Need to find a way to repair Pioneer SW-99 subwoofer. HELP!!!!? Answered

It has the adjustment for power supply on the back and any adjustment over 110v, I get the thump- thump error. Any ideas? Checked everything I know to check

Question by Neg8tyv    |  last reply


How do cheap power-supplies work?

I was briefly entertaining the idea of making my own power supplies for some electronics projects.  Everything I see involves the basic two step process of: 1)  Use a transformer between the 110V mains to bring the voltage down to the level you want, 2)  Use circuitry to smooth out the current from AC to filtered DC.  However, when I went to price transformers, I quickly discovered that to buy a power transformer rated to hook into 110V AC, the transformer alone would always cost significantly more than the cost of buying a full ready-made power supply of similar output. You can't buy a transformer rated for 110V for under $20-30, but you can find thousands of cheap wall-warts (transformer plus AD/DC conversion circuitry, plus connectors)  for <<<$10.  Or, if you look at higher wattage units, you find similarly rated (for volts and amps) power transformers cost $30-100+ dollars more than full power supplies. How are these cheap power supplies made for the prices they are sold at?  What am I missing here?

Topic by SvdSinner    |  last reply