How to make boost converter that will convert 3.8 volts to 5 volts for my android????
Question by PavleP 3 years ago | last reply 3 years ago
I make the rwilsford07 boost converter, but it doesnt work. The mosfet start heating and only gives 2v. I check the oscilator and is working perfectly, I try diferent things butit doesnt work. Before I make 120v, but I dont know how it stop working, I nad rebuild the circuit like three times but nothing happens. Can you help know why is this happen?
Question by Kurt Gerhard 7 years ago | last reply 7 years ago
I am making the rwilsfor07 boost converter, I already have the timer but the mosfet isn't working; I think that didn't work but I am not sure. Should I buy another one or buy a IGBT: http://www.ebay.com/itm/IGBT-Power-transistor-FGL60N100-1000V-60A-180W-TO264-/170643487614?pt=LH_DefaultDomain_0&hash;=item27bb24fb7e#ht_2150wt_758
Question by Kurt Gerhard 7 years ago | last reply 6 years ago
Recently I bought a Blender imported from US(to India) which runs on 120V 60Hz. I need a converter which Converts 240V 50Hz to 120V 60Hz. I got an idea of using a rectifier-inverter circuit such that by varying the gate signal can accomplish the aim. Is this idea a possible one?
Topic by ravic88 1 year ago | last reply 1 year ago
Well, I've posted this in numerous places and no one seems to have a clue. Myself being electronically illiterate, still, with all the technology out there, you can't tell me this can't be done. I live off-grid. We all know how inefficient the inverter is. It's a huge drain on my battery bank, won't function when they get below a certain voltage, yet all my peripherals that operate directly from the battery bank, operate fine. That being said, I have been trying to come as close as possible to eliminating the inverters and I have two peripherals left: 1) cordless telephone and 2) modem The problem is that they run from that pesky wall charger/converter from 120VAC to 6.5 and 9VAC respectively. Now, notice these units run on LOW VOLTAGE AC, not DC. That is, they are powered by the AC. My guess is that inside each unit, there sits a rectifier converting it right back into DC. In fact, for the phone, I see no other way because it charges a NiCad battery. So.... does anyone have an inkling as to an efficient way to convert 12VDCD to low voltage AC. Preferably variable, but not absolutely necessary. There is nothing on the market that I have found. So if you're looking for something to have to break into the electronics market with, here ya go. I'll bet there are hundreds of thousands 'off-gridders' who would want this technology.
Question by basementsong 5 years ago | last reply 4 weeks ago
Anybody knows how to make this? the cable connector. thanks.
Topic by bite_brian 7 years ago | last reply 7 years ago
Hi! I'm having a few TEG-elements (TEP-1264-1.5) that I want to put best use of and plug them in to a circuit in one end and get a 5V USB in the other end! They are acting somewhat similar to solar panel and a matched load (in this case 2.0 - 2.8 Ω for each) is needed for optimal performance. They will provide during matched load 2.5-4V and 0.5-1.5A and I'm planning on putting two of them in series. I have been looking at a MPPT design, but those seem to be based on the fact that they are charging a 12V battery that can accept a wide range of input voltages and therefore it's possible to have a DC/DC converter that just adjusts the conversion. In my case I wan't exactly 5V but I can accept various currents 300mA - 1000mA, so if I know my Ohms law right I should be able to get a load resistance of ~1 - 16 Ω which is quite far out of range. Is there any way to design a circuit that has a matched load of 2.0-2.8Ω (or will it be twice if they are in series?) while still being able to give a constant output of 5V?
Question by Granstubbe 1 year ago | last reply 1 year ago
I tried this circuit using a 3.7v supply and instead of a 12v Zener I used a 5v Zener. I also used a 22uH inductor. I get 5v no load but when I add a load the voltage drops a bit and the current is 50ma max. Why is this not working and what could I change to make it work? If this is the wrong circuit altogether, then what discrete circuit would work? http://www.aaroncake.net/circuits/6-12conv.asp
Question by Davis Lambert 3 years ago | last reply 3 years ago
Hey Guys! I want some advice regarding boost converters. I want to charge a capacitor rated for 450v 1150uF using a boost converter with input voltage >12 volts. What kind of inductor values will I need? What should be the duty cycle and frequency of the square wave generator? And is there any formula to calculate this or a calculator? Thanks in advance, IndianHacker002
Question by IndianHacker002 3 years ago | last reply 3 years ago
My motorhome has a115v ac to 12v dc with a split transformer, the 2 outer leads went to press in diodes and the middle lead went to neg or pos.(cant remember witch) it is 40amp converter. one of the diodes was bad and i was only getting 6 volts out so i replaced them both with 40 amp 600 volt ZENER diodes. Are the zener diodes the wrong type to use, all seemed good except my neg and pos polarity were reversed coming out of the power converter, I reversed the terminals at the hook up so polarity would be correct. Could this discharge my battery when its not connected to 115v. Thank you, Duncan
Question by dsr. 7 years ago | last reply 7 years ago
Am trying to put a boat radio on my patio, plugging into house current. The radio uses a 10amp fuse. All $5 converters I find on the net are for cell phone chargers and the like. I don't think they have the power I need. Have seen something about using an old PC power supply, but I'm not sure it will stand up to the weather, even though it will be in a box, and I don't know how to determine which outputs would be 12 volts. Anything I have found is WAY over budget...I'm trying to find something for less than $25. Am I on fools errand? Are there options I don't know I have? Any help is most welcome! ***REVISION*** I should qualify....the radio is actually an AM/FM CD radio, not VHF or Ham. Sorry for the confusion.
Question by craigo 5 years ago | last reply 5 years ago
I intend to make a devise where it would have an impute of 120v ac at 60Hz and have a output of 120v ac at a frequency between 10 and 60 Hz and could be changed with a variable resister in fine increments. this also needs to be able to handle 10 amps. any ideas, I would appreciate all help
Question by alexander.m 9 years ago | last reply 9 years ago
Does anyone know how to convert 9vdc power to 12v dc power? ive looked all over the internet and nobody seems to have any schematics for anything like it. It needs to be about one or two square inches. Its for a pellet rifle with a built in air compressor so i can travel through the woods and not have to worry about going back to the truck and airing it up. please email me at email@example.com thanks
Question by mongoose_08 9 years ago
I need to power both a Raspberry Pi and a 12v touch screen from the same 12v source. I know that I can use a dc voltage converter (like this one: http://amzn.com/B00GQ4DTGQ) to step the voltage down to the 5v for the pi. The power supply has the circular 12v adapter (e.g. http://amzn.com/B00GUBVI9K). My question is how to I attach the voltage converter to the 12 supply, and still be able to use the 12v supply for the touch screen? Thanks!
Question by mwbuksas 4 years ago | last reply 4 years ago
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 9 years ago | last reply 9 years ago
Question by umazidik 7 years ago | last reply 7 years ago
I want to build a 6-12v dc converter so I can use a CB or FM radio in an antique car (1930). The car uses 6v positive ground power. There are small commercial units available for about $100 but there's got to be a less expensive alternative. Thanks!
Question by beast_3 8 years ago | last reply 8 years ago
I need to measure the inductance(L) of a certain coil I have wound.How do I do it experimentally without using LCR meter?
Question by pmadithya 6 years ago | last reply 6 years ago
Hello every one, Since i am totally new to PCB designing and all these stuff, I want to know few things about Eagle CAD tools I will be designing a Frequency up-donwn converter as a University course project. out of many components selected for this project one of them is as follow. http://www.hittite.com/content/documents/data_sheet/hmc523lc4.pdf i have gone through designing of the LC4 package, i hope it would be fine, still i would like to know how to creat ground of a package, creating outline boundries of package (is it from wire or from rectangle, polygon??) and about symbols inside this package, i am confused about drawing them exactly and connecting them to each other (via wire or net or what??), should they be just symbol or e.g i have to draw even what is inside circuit of a mixer or amplifier etc.. I shall be very much thank for your kind help
Question by lali2 7 years ago
I have an old TV that I want to convert so that it's able to be used as a monitor for my camcorder. The TV however only has an antennae and screws on the back for a circular UHF antenna. It's an old RCA Model EJR 291S black and white tv. If anyone has any ideas let me know.
Topic by mrshow555 11 years ago | last reply 11 years ago
I need to convert a bird sound from the audible level to the ultrasonic, close to the the 20khz level. as long as we human cant hear the sound. My question is, what is the best method to convert this file? thanks in advance
Topic by bujuk 8 years ago | last reply 9 months ago
Anyone know how to convert an AC to DC without using the Neutral Cable. Just a Single Live wire. Is there a way to split the incomeing Live wire to positive and negative phase and convert to DC from there? ANyone have any ideas?
Topic by Paradigm812 9 years ago | last reply 9 years ago
I recently purchased a normal set of white LED christmas lights for my apartment. But recently I saw similar units that run on solar energy. I was wondering if there was a way to convert the sets that I have into either battery powered or solar powered.
Topic by mrshow555 11 years ago | last reply 11 years ago
I am trying to find a practical way to build a device to convert magnetic energy into electrical energy, some kind of generator or other device, there are several ways in which this might work in theory but actually building the device would be more difficult to figure out.
Question by thedriftcore 7 years ago | last reply 2 years ago
I've been looking around and it seems like most catalytic converters have palladium in them. I think palladium is mostly inert but palladium salts are highly toxic. I would like to open up a catalytic converter and use the substrate to make a thermoacoustic engine stack. So do you know if it would be poisonous to me to open a catalytic converter? Thanks!
Question by snotty 7 years ago | last reply 7 years ago
Can I convert the coilgun into a railgun by replacing the firing tube with two rails? Should the current pass through the rails only for a moment (as in the coilgun)? Which can accelerate a projectile to a higher velocity?
Question by coilgunfreak 5 years ago | last reply 5 years ago
Hi ppl, for electronics A level coursework i am hoping to build a DC to Dc converter to use to power high power leds. As far as i understand it will convert DC to AC, use PWM to alter the current out, and then convert this back to DC giving a constant current out. These are available in devices (known as buckpucks) but for my coursework i hope to build a similar thing on Breadboard. This is really a question for the engineers and if they could give me some advice on anything to do with this it would be great! Thanks ppl
Topic by drummer ian 11 years ago | last reply 8 years ago
Anyone have info on converting a bike to a trike? My disabled son has balance issues but wants to ride with the family, however we can't afford a new adult tricycle or one of the expensive conversion kits. He's much too large for training wheels to work. I'm hoping to find a way to convert an old bike with minimal expense and no welding.
Topic by valr 11 years ago | last reply 2 years ago
I need a dc-dc boost converter that will step 25.9 volts at 2600 mah up to around 388v at 360 ma will I need a battery back with a greater amp output I can get up to 12000 mah at the same voltage any suggestions I am trying to charge a .1 farad cap bank that consists of only 10 caps Any help is appreciated -TDC
Topic by ThinkDesignConstruct 4 years ago | last reply 4 years ago
I am trying to convert an electric string of LED lights to 12 V battery power. (I am using them on my golf cart, which has a 12 V battery and would like to run the lights using a switch that is attached to the battery.). How do I do this? I have attached a photo of what I have.
Question by RobinL91 9 months ago | last reply 9 months ago
I came across a CATV CONVERTER Jerrold 550 model # DP7113 and when i tried to hook it up to my TV i got a blue screen . channel 4 was the only channel that was somewhat visible . if anyone can please give me some basic instructions i would appreciate it very much thank you
Question by rottieowner90 8 years ago | last reply 8 years ago
I have a single phase 3.5 hp AC motor, I would like to convert to a 12 volt DC.I'm no electrical expert but I think it can be done.From watching youtube vids and asking Mr. GoogleI understand a DC motor runs slower say 1750 rpm,where my AC motor spins at 3,450 rpm.I also understand a DC motor has brushes.Besides the speed being different, and changing the cord out,is there any reason WHY this couldn't be done?Any potential drawbacks?Any help or knowledgeable advice would be much appreciated.Thanks guys,skip
Question by xhdskip 1 year ago | last reply 1 year ago
Basically, I want to power a small AA device from a usb port, preferably terminating in something that will fit snugly into the two-AA receptacle. I searched the archives, but couldn't find an equivalent project. Any assistance would be appreciated. Thanks.
Topic by J0ub3rt 2 years ago | last reply 2 years ago
Hello, I want to connect a portable solar powered rechargeable to 2 DC fans of 12v to cool my car. 1. I have 2 options of portable solar powered: (A) 1500mAh, outputs: 5.5V / 800mA (B) 2000mAh, outputs: 5V 500mA which one is preffered to connect to those PC fans? 2. most of the PC fans are working at 12v. I don't quite sure if I'll build simple 5v to 12v regulator it will works and produce enough airflow. Thanks.
Topic by ashakif 7 years ago | last reply 5 months ago
Hello, It Is Now Summer where I live, and it is getting VERY hot. I Want to put in an Air Conditioner, but whenever I do, My electric bill goes through the roof! I have an old car part (Cannot remember what it is called, its the part that uses the turning engine to charge the battery or something like that... I Cant remember) and I would like to use that (made into a mini wind turbine) to charge my spare car battery, and use a DC to AC Power Converter to power the air conditioner... I Have an DC - AC converter, but its not powerful enough... I Need To Build One That Can Power The Air conditioner.... Soon... Its Starting To Get REALLY hot... Thanks...
Question by Tuckoguy 4 years ago | last reply 4 years ago
Hello, One year later, I found that video on youtube about a japanese scientist who converted plastic back to oil : Source : http://ourworld.unu.edu/en/plastic-to-oil-fantastic/ I waited for a convenient version for home use but still the smallest system weight 50Kg (100 pounds I guess). For what I read on the subject it's a kind of catalytic pyrolysis (whatever it means for such a non scientist as myself...). As any of you have an idea on how to make this kind of system for everyday use?
Topic by hypelike 7 years ago | last reply 6 years ago
There's been a huge increase in spam in the past few days....mostly by dalacjack but some by others with permutations of the name.....it's all "how to convert" such and such....and they've all got links in the post that actually point to various mortgage sites etc....i've flagged them all...but i think the guy's account needs to be revoked
Topic by crapflinger 10 years ago | last reply 10 years ago
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 4 years ago