# COMMUNITY

### Boost converter?

How to make boost converter that will convert 3.8 volts to 5 volts for my android????

Asked by PavleP 2 years ago

### can i power my minty boost with these D cell batteries ?

Will i get more charging hours by using them?what is the maximum number of D cell batteries i can use in series to power a minty boost circuit?or how much input voltage can i give to a minty boost circuit?

Asked by imakethings 8 years ago

### Bluetooth boost question?

I want to boost my bluetooth dongle. On some Instructables there are mentions of getting an exactly correct length.  On others the length and shape seem to be arbitrary.  If I want to add more antenna to my bluetooth dongle, do I have to make it an exact length or shape?

Asked by finfan7 7 years ago

### How do I build a DC-DC boost converter?

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

Asked by IndianHacker002 2 years ago

### I'm using a 5V boost regulator?

To charge a cell phone battery.  BUT maximum current is 200 mA.  That's not enough current I'm assuming, right?  I need a continuous output of 5V but my students are most likely not going to get 5V from a shake charger (neodymium magnets going in and out through a coil of wire) which is why I was going to use a LM7805 but that needs 3 volts more than the output voltage.  Any suggestions??  Thank you!

Asked by mckywer 7 years ago

### Why does this boost converter circuit not work?

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

Asked by Davis Lambert 2 years ago

### volatage booster

Hi every one . i need to know if its possible to boost DC voltage from 0.1V source to 3.8V DC output and how to do it  thx for answer :)

Posted by insurgent 2 years ago

### I am looking for instructions or tutorials that would be helpful in building a DC boost converter to convert 9.6V to 12V

I am looking for any kind of information that would assist me in building a DC boost converter.  I understand how a DC boost converter works but don't know the math behind it so I am unclear about the types of capacitors, transistors, inductors etc I would need.  Any help in how to calculate these values or how to build this circuit would be great!  Thank you.

Asked by mezi24 7 years ago

### Boosting Fm transmitter range

I bought a FM transmitter for an ipod. I would like to boost the range of the device. (I know it is illegal but would like to get more range than 2 feet.) I think I need to build an external antenna but need to know where to hook it up to the thing. The transmitter I have is a ge FM transmitter for ipod.If anyone has done anything like this or have any useful links it would be great. I don't know anything about circuit making so help would be great on that as well.

Posted by thejrb 10 years ago

### Boost 12 V lead acid to higher values, like ca. 60V (+- 30) for amplifier...How?

"home" amplifiers are relatively easy to find. A simililar amp can be built from available (velleman) kits, or from discrete components.  But for portable use (on the bicycle, or car) , with one, or max. two 12 V batteries, only ready made car amps are available. The only thing between the choice of using stuff I already have or buying car sound system components is the power required... Which would mean there is a circuit inside the car amplifier boosting the battery voltage... Can anyone suggest a simple circuit or easily available gadget to boost the 12 V car battery voltage to the required +- 9 up to +- 40 V required for the variation of designs available. I am thinking of using (X2) the 200 W Velleman kit (+- 30 V) or the TDA 7294 chip (+- 40 V) for my bike amp, but would also like to know how to boost to arbitrary values (like, 17, or +- 21V) (for understanding). Of course, not just voltage, but also power is needed here!

Asked by BobS 7 years ago

### Boosting broadband access from a usb modem?

How can I boost my broadband access from my usb modem? I am about 2 mi from nearest cell tower and I'm getting about 2 bars of national access to about 2 bars of broadband access (slow to medium speed). When I am in town by towers I get full 4 bars of broadband, (speed is phenomenal!) Is there anyway to boost my signal from home? Can I "ghetto" rig an antenna wire from usb modem antenna to the tv antenna on top of house? Any help appreciated... I have the USB720 modem from Verizon, and a new Dell Inspiron 1520 loaded with Windows Vista. Attached is modem specs from Verizon wireless. Thanx, The Revelator P.S. Hardline/fiber optics is not an option here, only cell phone access at house.

Posted by revelator 9 years ago

### Circuit Design for DC to DC Buck-Boost Converter

Sir, I am Anand from india, I will made a project based on bicycle. I have take 5 to 80v From my Bicycle pedals. Generator power is in AC 3-Phase. I want to made next step. in this I want to this 3-Phase AC 5 to 80V are constant At 48V DC. I put the 4 batteries in series. 12V 20Ah battery I use. I want to charge this batteries please help me. Thank you.

Posted by AnandC10 2 years ago

### USB

I was wondering......i know computers can give electricty through USB, but can they recive it through a USB port?

Posted by mythbusterma 9 years ago

### Which Boost/buck converter? LTC3780 vs LM2577S LM2596S

Hi, brought two boost buck converters to build a bench power supply from a atx psu.  Brought the LM version first as i have read previously that these are quite efficient, then seen the LTC one, so thought i might as well buy that as well.  Looks like the LTC board will be able to go down to lower voltages and appears to have a greater efficiency, quoted up too 98%, compared with the LM's at around 80%. Thou i understand that with adjustments changes efficncey.  LM2577S LM2596S http://www.ebay.co.uk/itm/281777880409?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT LTC3780 http://www.ebay.co.uk/itm/332009159315?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Which one do you think i should use? Regards

Posted by JonathanM221 1 year ago

### can usb then recharge the minty boost from my laptop?

Can i plug the minty boost in to my laptop to recharge the batteries or do i have to put new batteries in every time. if not how do you make it usb rechargeable?

### How can I make something to boost my wifi on my iPod touch?

I really want better wifi and I don't want to go out and buy something. I want to make it with house hold items or an overall price of \$5 or less.

Asked by iLove Apple 8 years ago

### Connecting together a rechargeable 1.2V battery to source current and a 9V battery only to boost voltage? Possible?

Output should be within acceptable voltages of a 5V/1A regulator. What would the schematic look like?

Asked by freezeface 8 years ago

### How to boost a sawtooth signal?

Hi, I need to make a sawtooth generator based on an NE555 (the power supply will be 15 volt - 5000mA), and I need to boost the output signal as follow: http://s21.postimg.org/dwz6aynvb/Sawtooth.png Which needs to go from 9.6 volt to 14.10 volt with a 3000mA current. I've found a schematich, but I don't know if is valid: http://s27.postimg.org/9ptmbsbkz/Signal_Boost.png Would be a viable way, using this schematic, or there would be a better/different solution? If so, someone could suggest me another schematic or tell me how to modify the one which I posted? Thank you.

### boost volts deflate amps? Answered

I recently came to know about a "mintyboost" from "steveastrouk"( a very helpful and trusted member of instructables).It boosts up volts while bringing down amps very much like a step up transformer.Well I've got 2 AA rechargeable batteries rated 1.2 volts and 1900mAh.So here's my first question-I connect these batteries in parallel and they give out a total of 2.4 volts okay fine....but what about the amps?will they get added up like volts and produce 3800mAh current?The latter part-I need to boost this 2.4 volts to 5 volts by bringing down the amps(any value is fine as long as its above 0.7 Amps).Could you please give me a specificated instruction on how to do this?If to use a "mintyboost"what software should I use to calculate the required values and......... the rest...... Pls don't think I'm lazy.I really want to do this so badly...

### WiFi signal? Where? You cannot get there from here.

Planning on a trip to Northern Maine, and I do not think "hotspots" will be crawling out of the woods.  Ok, I'll cut the cliches. Within reason \$\$ wise,  what can I do?  directional boost?  Thanks  i am sure this is a no brainer for a brainer.  Had to.  Chas

Asked by Charllenger 8 years ago

### How can I boost satellite internet signal for laptop housed in building located fair distance from dish

Hello. First time question-poser. I need really basic information (no freaky-tech-talk, please). How do I summarize? Dial-up, broadband through cell phone provider, DSL ( although discovered our location is too far out), and now satellite internet through Hughesnet. Iffy at best. Here is my dilemma: I need to boost the satellite internet signal for my laptop that will be located in my new handy-dandy office (when it is finallly constructed: a month or so) on the back of the property? Haven't measured the distance but more than a hop, skip, and jump. More like 100 hops, skips, and jumps. May have old Dish dish as was a suggestion on a page that I can't get back to now that I am officially a member, thank you very much. I know way more about this internet thing than I want and not enough to help my situation. Any suggestions would be greatly appreciated.

Asked by mimsk 6 years ago

### How can I attatch an external antenna to my HSDPA netbook, without soldering wires to the internal antenna?

Just gota new netbook (Advent 4213) that has built in HSDPA (ie, a sim card slot for mobile internet). My problem is that where I work there is a very weak signal - I've looked at a couple of antennas, but there's no socket in the netbook to plug one in! The inbuilt antenna is on the bottom. Can anyone recommend a way to non-permanently attatch something, like velcro, etc, to boost the signal? It's just info on what sort of connection I could use. Thanks in advance!

Asked by Coz_UK 9 years ago

### I would like some assistance in designing a digital LED display vacuum/boost gauge for a turbo application. Answered

Hello!   I'm new here. I would like some assistance in designing a digital LED display vacuum/boost gauge with both a linear LED display as well as two seven-segment display modules.   I plan to use a standard automotive MAP sensor to provide the -30Hg to  +30psi signal.   What I envision is having the two seven-segment displays sit next to a row of 28 green LEDs for vacuum to -28Hg, 7 yellow LEDs for pressure from +1psi to +7psi, and 8 red LEDs for pressure from 8psi to +15psi that light up incrementally as the pressure increases or vacuum increases from a center point of zero (clear LED always on).  The problem is that I have absolutely NO idea of where to start other than the layout of the LEDs.  So any help would be appreciated. Thanks! Skullmaster20  (Chris) Edit -----  This is a drawing of what I'm trying to create, and a picture of what I'm going to replace.

Asked by skullmaster20 8 years ago

### Is it possible to build some sort of wifi signal relay station? Answered

I have a linksys Wireless N router which doesnt seem to have the power needed to reach all corners of my house... It also has no antennas (and i don't have money at all so a wifi usb thing isnt an option) so none of the guides here about wifi boosting dont really work. So i had an idea about how to fix this but had no idea how to implement it.... Here's my idea: build some sort of relay station to extend the range R=router @=relay L=Laptop )=signal R) ) ) ) ) ) ) ) ) ) ) ) ) ) @ ) ) ) ) ) ) ) ) ) ) ) ) L Is this possible? I have an old linksys router with two antennas if that helps

Asked by quellek2 7 years ago

### I need help with my website forum and need to boost traffic

Hello, I want to ask about your opinions about my websites forum (not mine per say but my good friends), http://yowee.netai.net My friend, the admin, hydronator, is considering taking the site down because we dont get much traffic, and no-one other than a few of the members of the old forum which crashed, have joined the new forum. I want to know, what could be done to improve the site, and also, what would be a better way to describe the forum, other than "fun weapons designing ", since that doesnt exactly sound right, at yowee i and a few others design things that might be considered weapons, like potato launchers or pen catapults , things that you wouldnt call toy weapons. anyway, we need a positive way to describe what we do, as well as ways to attract more traffic, or else hydronator is going to shut down the site :( because he is depressed, and is being rather negative in turn of recent events. Basically what yowee is, or what it was originally was " a community of friends having fun  conspiring against society and plotting fun ways to have fun ,prank and be a nuisance" somewhat like anarchist community in many ways, except completely different, not being anarchists and all. Its hard to describe, which is one of the reason ide like to ask for help!

Posted by oldmanbeefjerky 6 years ago

### How to boost the wifi range of a nintendo ds? Answered

How to boost the wifi range of a nintendo ds?

Asked by treinengek 9 years ago

### an antenna to boost my cell reception?

I will need and antenna to boost the reception of my cell

### Turbo Boost Rippin Rockets question

I was wondering if anyone knows if the Turbo Boost Rippin Rockets engine that propels the cars works with other/all K'Nex rollercoaster cars and tracks?   Thanks!

Posted by pghninja 3 years ago

If i use an XL6009 module to boost up my battery for example from 3.7 to 5 volts how it will effect on the battery my battery will drine much faster ?  will stay the same ?

Asked by NivA2 1 year ago

### will it boost the range if I connect the unused wires in LAN cables to my FM transmitter?

That way I will have an antenna thats 50metres long

### Voltage boost

I'm trying to make a remote shutter release for my large format lenses. I found a solenoid that will do the trick. It's 12v / 36 ohm push solenoid with 3/8" travel. I prefer to drive this thing with a single AA battery. Is there a simple way to boost 1.5v?

Posted by JonLoder 4 years ago

### I need a diy solution to boost 6V DC to 12V DC @850 mA

I have torroids from pc power supply units, loads of transistors, 555s, uControllers, diodes, caps... all sorts of stuff.

Asked by yaly 3 years ago

### convert 12v to 14.5 v simple? Answered

Hello. i have an LCD monitor powered from AC, that i want to make to be powered by DC for use in my car. the monitor PSU , supplies the controller with +5v and +14.5v. and i want to power the monitor from a regulated 12v psu. my question is, how would i make a dc booster, from 12v to 14.5 v at 2 ampere? thanks in advance!!

Asked by settra 4 years ago

### How does the joule thief circuit work? Answered

The best i can figure, the current coming through toroid turns on the transistor, then the collector drains the current to the negative, while pulling it from the emiter back through the diode to the collector? if i am correct, how would this boost the voltage?

Asked by revelae 8 years ago

### Seeking advice on boosting range of fm transmitter (from a kid's toy)

Posted by damianzuch 6 years ago

### Getting more power from a quartz clock movement

Using a transistor to boost the output from a quartz clock to drive a larger motor in steps. Is the idea sound what would I need? Having read a couple of instructables on equitorial drives, I found myself wondering why you couldn't just use a quartz clock movement to drive one? They don't produce much torque is the answer to that one. Why not? I took one appart to find out. The gear chain is very flimsy moulded polyethylene, or maybe nylon. the power comes from a tiny armature that makes 1 turn a second in 2 pulses the magnetic pulses are provided by a little cuircit board with the quartz ossilator on it. Here endeth my actual knowledge. My knowledge of electronics is minimal give me a good set of instructions and I can build it (unless its a joule thief but thats a different matter) but don't ask me how it works. My limited understanding of a transistor is if you put a small current or voltage across 2 pins you can get a bigger current or voltage to flow across one of them and the third, something like a relay. I was thinking if I took the out put from the quartz cuircuit that provides the magnetic pulses and used it to trigger a transistor to pulse a higher voltage and current through a small 3 pole motor kicking it around 1 pole per pulse. The motor I have a salvaged and rebuilt in an earlier instructable runs on 3V and draws 0.2A when not under load. the largest motor I have to hand is a big 7 pole one designed to power model planes or cars draws up to 15A on 7.2V the timer cuircuit for that one needed 3 Mosfet's in parralle so I'm guessing thats not possible.

Posted by Stan1y 3 years ago

### Boost converter LED brightness?

Will a boost converter IC (such as the one from maxim) ever be able to power a high power LED as brightly as when the LED is powered with a constant current source?

Asked by .Unknown. 8 years ago

### Question about a 5 Volt boost regulator?

Is there a cheaper version for the NCP1402 5V boost regulator? One of those is \$5.95! Any help would be appreciated!?  Thank you! Patti

Asked by mckywer 7 years ago

### Use of IC Buck-Boost drivers in automotive LED lighting projects

I've been contemplating the use of high power amber or yellow LEDs in a low cost automotive warning system (think tow truck).  However, car electrical systems are not set at 12v.  They can range from 9 to 19v with spikes up to 70v.  To protect the components I would need more than just a current limiting resister.  Under those conditions they would need a buck-boost driver.  Unfortunately I'm new to ICs/power LEDa and not sure where to start.  I was hoping someone would be able to help me out with further guidance.  I Thanks! -Mike

Posted by vanmankline 7 years ago

### How to Boost Voltage from 1.2 (or 2.4) Volt to 12 Volt?

I want to Build a flashlight as small and bright as possible but it doesn't need to last long. I allready got a case i want to use, it has enough space to fit 2 rechargeable AA's and 2 1000mA LED'S + cooling thingy. But to build it I need at least 7-8 Volts (12 woud be better). I only need it for like 10 Minutes between recharging so I don't really care about efficiency. Every schematic and formula will be helpful :) Oh and it would be nice if it's cheap ^^ Thanks from Germany :)

Asked by Yakumo 7 years ago

### MATLAB Simscape Power Systems & Electronic ?

Hello! I need tutoring MATLAB Simscape Power Systems and Electronic. I am working on a project in which I am trying to simulate Photo voltaic panel charging battery with controller ( dc-dc buck-boost converter) with Maximum Power Point Tracker and without it. I need to calculate efficiency for both cases. I have stared part of it with searching online Please, if you can help let me know

Asked by skumu 1 year ago

### Making Solar USB charger- 5.6V too much for an X-Y:5V step up?

The estimated max my (DIY) panel would have put out was 5.0V, but It's 5.65 in the brightest sun nearly exactly 90° So I wonder is 5.65 outside the input limit for a typical "_ to 5V" step up usb connection? I have learned that if I had a really wide voltage that I would a boost-buck converter to step it up or down depending on the input. I just don't know if I need that here. What happens if you over-volt a step up?

Asked by Phoenix17 3 years ago

### Boost Memory

My IPod has terrible memory, and I've been thinking about boosting a memory somehow with a USB (Flash Drive), just a thought. (I'd love to see an Instuctable).

Posted by Wasagi 10 years ago

### Boost curcuit amperage issue? Answered

I am planning to make a small boost converter similar to mintyboost. I am using a boost IC that will give me about 92% efficiency with the voltage i have. The output is 5v at 500ma, and the input voltage is 2.4v. Would the ic suck up more than 500ma per hour from the batterys?

Asked by astroboy907 8 years ago

### Has anyone thought about making their own aircurve (by Griffin) for boosting ipod/iphone sound? Answered

Asked by RoddyTheGreat 7 years ago

### Is it possible to turbo boost a turbo? Answered

Question says it all, and is kinda overkill, but did anyone tried it?

Asked by ARJOON 4 years ago

### What factors affect signal strength?

I made a signal boosting rig out of cardboard and aluminum for my router for my PS3 to access it ('cause I can't move the router in my current situation). So anyways it started out boosting a 17% average signal strength to a strong 50%. But now a couple of months later, it's maxing out at 23% and it's been happening for a couple of weeks now. Also, my ps3 absolutely refuses to work with anything below 25%. So what changed? I haven't moved the rig since I set it up and none of the furniture has moved either. The only factor I can think of is the changing of the seasons. Anything else that could of caused this?

Asked by Ausm 7 years ago

### Coilgun, Mosfet problem and joules?

I have two questions: when a mosfet is damaged, it conducts electricity without putting energy to the gate? I have the 75N75 mosfet and I want to use it on the rwilsford07 boost converter, but the mosfet didn't work and I don't know why it conducts energy without putting energy to the gate. I read that the mosfet can be damaged with static electricity, but I use always an anti-static wrap. The formula to get the joules from a coilgun is this?: 0.000005 * C * V * V C= uf V= voltage

Asked by Kurt Gerhard 6 years ago

### Can you use Electromagnetism to 'Boost' the power of a permanent magnet like rare earth magnets? Answered

Simple question. Also if so how much of a boost per volt/winding.

Asked by draghi 8 years ago

### Too much voltage for dc USB boosting converter ?

I have a 6v rated solar panel but am also using 3 rechargeable aa batteries, 3.6 volts. My USB boosting converter is rated for 3v-5v input and obviously outputs 5v. Would the 6v solar panel damage the boosting converter if it were to output 6v? thanks!

Asked by Stevemills04 4 years ago