High pressure pump

Does anybody know how to build or get a pump that costs maybe like $20 that will pump to at least 400 psi?

Posted by waterrocketexpert 4 years ago  |  last reply 4 years ago


High frequency generator

I want to build a VHF (high frequency) powerfull generator for make an unusual form of lightning. It must produce microwaves 10 - 20 mm. length. Please, write here if you have any information about such generator.

Posted by 012345678910 9 years ago  |  last reply 9 years ago


High Voltage shenanigans

I thought it was about time to post these videos ive made so i did! my very first forum post!

Posted by The 4th Doctor 9 years ago  |  last reply 9 years ago


High voltage suggestion

Anybody have any suggestions for what I should do with some high voltages. I don't want to make a taser, cause it could kill and I have no need for it. I don't want to make a jakob's ladder. anyone have any cool ideas?

Posted by guyfrom7up 11 years ago  |  last reply 10 years ago


High Energy shenanigans

Blowin up small fruits with my capacitor bank, and a little look at my homemade plasma globe hopefully ill add more of a description at some point, feel free to comment and ask questions

Posted by The 4th Doctor 9 years ago  |  last reply 8 years ago


High voltage beer

Whilst browsing the net doing some research, I came across this video.Watch the fluid currents created by the electrical currents.Cool.(And, please, no comments about wasting beer - it looks like it's only a lager.)

Posted by Kiteman 9 years ago  |  last reply 9 years ago


katoomba high school

Anyone go to katoomba high school?

Posted by The nerdling 6 years ago  |  last reply 6 years ago


Arduino High Frequency?

I have an Arduino Duemilanove and was wanting to know how and/or what I need to do to create a high frequency signal. I dont have a set frequency in mind but would rather know how to change it so I can gradually step it up until I get desired results.....Have looked at a lot of stuff on google for how to do this and most refer to a wiring.c file but mine appears to be an updated version to what they have...Anyways any help would be greatly appreciated =)?

Asked by afreeland 8 years ago  |  last reply 8 years ago


Micro High Voltage

I'm going to attempt to make a super micro tesla coil that is 100% contained (unless it runs off of like 12 volts dc, then I'll use a wallwart). Of course, one of the i biggest problem is the power supply. So this is what I'm asking, what's the best way of ramping up the voltage? A tiny toroid transformer? An inductor that gets pulsed? Voltage Multiplier? Something with static electricity? Some type of Inverter? Using Greinacher Cascades? A marx generator hybrid? Other stuff I havn't heard of?

Posted by guyfrom7up 10 years ago  |  last reply 10 years ago


High Voltage Ground

I'm starting to work with high voltages again, but for real this time. I just built an ignition coil driver, using a 555 (and I got an ignition coil), but my 555 broke (the texas instruments ones can only drive 15mA, oppose to the normal 200mA, oops) so I have to go buy one today. My main question is what to use for ground, whether it be for an old screwdriver for arcing sparks or the secondary of a tesla coil. I was originall just going to use the 3rd prong of an outlet, but somewhere on the internet I heard this could destroy all surge protected power strips and destroy all plugged in electronics at your house. I, of course, do not want this cause... well... I'd be screwed. Is this true or not? Can I use the 3rd prong?

Posted by guyfrom7up 10 years ago  |  last reply 10 years ago


phototransistor for high voltage

Before the begining sorry for bad english I want to make laser tag with electric shock when hits This is circuit of taser what I want to do is remove the switch and replace with wire so that the taser can charge automatically then I want to put a phototransistor(that react to red laser) to the poles(where you get shocked when touch them together) but because the both poles are attached to bodies the taser can't be charged so I tried to block one side of pole with phototransistor but when I touch the two poles phototransistor burned(?) and I got shocked in this case what can i do?

Posted by hyeok205 4 years ago  |  last reply 4 years ago


WHO IS IN HIGH SCHOOL

JUST WONDERING WHO IS IN HIGHSCHOOL

Posted by rickick 11 years ago  |  last reply 11 years ago


UV high power

Don't use on your Hotel room covers, chairs or bed sheets! ...you don't want to know! UVA/UVB high power LED's and some white use UV with white phosphors so be sure to wear eye protection...

Posted by erckgillis 12 years ago  |  last reply 9 years ago


LED high striker?

I'm wanting to build an electronic version of the popular carnival game High Striker. I would like it to be done with LEDs as the way it displays the power of the strike. This way i can arrange them however I need to. It's going to be themed to look like lightening, so they won't be in a perfectly straight line. Thanks in advance for any input.

Asked by Dustin Cox 5 years ago  |  last reply 5 years ago


high school academy?

I want to go to auto academy at my high school but my parents say no because that everyone that is in there is"bad people that do drugs and smoke and that i will do that too" but i know alot of people in there and no one does that how can i convince them to let me? i already talked about it for hours and they still insist i dont and its very anoying

Asked by BIGHAIRYDUDE 7 years ago  |  last reply 7 years ago


High Voltage Amplifier

I am trying to build a high voltage amplifier that will amplify an AC signal of approx. +-5V to a signal of approx +-100V.  I was looking into building a common-source amp using JFETs or a common-emitter amp using BJTs, but both seem to have an output waveform of 0V to +100V.  Is there a way to modify these amps to have an output waveform of -100V to +100V?   Also, if anyone has any better Ideas, please let me know. Mark

Posted by questionmark05 8 years ago


High Current measurement

I need to measure Current from a welding machine to make a alarm if it goes down below some level for ensuring better quality of welding. The current normally set is of the order of 200A max with around 100V DC.Not sure if i could use some clamp-on meters and pass those values out to Arduino for switching circuit. Shunt resistors may be a better option. But to make a signal conditioner to convert the ma output will be a problem i guess..is there something i can do with Arduino.. any ideas guys....? Thanks in advance Chuppandi

Posted by chuppandi 6 years ago


High voltage NOT gate Answered

I am creating a circuit and I need a not gate to run 20 3v 20mA LEDs. The only problem is that to run all of those LEDs (4 series circuits in parallel, if that will help) I am using 18 volts (2 9v batteries in a series). My circuit is compact (,think fitting inside an Altoids container) so a relay wouldn't work. So I need a high voltage way to make a not gate. I can read schematics if that will help you explain it, but I do need you to mention the ohms of the resistor. Thanks a million!

Asked by GenAap 7 years ago  |  last reply 7 years ago


High Power LEDs

I have 3 10 watt LED emitters to sell (2.9 cm x 2.0 cm x 0.3 cm) Colour temperature is about 6000K I'll ship anywhere in Australia I don't have a good quality camera right now Send me a private message and I'll see what I can do

Posted by .Unknown. 6 years ago


High Altitude Balloon

Hello guys, I have recently started working on a high altitude balloon project. I am planing on making a balloon that will go up to 100k ft and while it is travailing up to that altitude it will be snapping pictures and taking videos of the sky.  I am publishing all the updates related to this project on a project dedicated website www.AggieSpaceProgram.com . However after i am done i will be also making a very deatailed instructable on it so others may fallow in my foot steps. I just wanted to share my project with the instructables community, L4I

Posted by looking4ideas 8 years ago  |  last reply 7 years ago


High Frequency Alternators

Look at a picture of some arcs from a common spark-gap Tesla Coil, and then compare it to the arcs from a solid-state. What makes the two so different? The difference comes from the Solid-State Tesla Coil to operate in CW (constant wave) mode. This means that its power supply is uninterrupted, whereas in a spark-gap type, power is being switched on and off hundreds of times per second. If the output terminal of a CW coil doesn't have a brake out point, no corona or spark will occur. For anyone who's investigating wireless power transmission or Tesla's version of radio, this is a very helpful feature, since corona only wastes energy. And if it does have a brake out point, it can create some pretty interesting spark displays, as I mentioned above. An arc to a grounded object increases the current in the arc to such a point that it turns into a white-hot "flaming" discharge. All-in-all, a CW type coil is a pretty interesting kind to observe. But solid-states can be pretty difficult and annoying to build, and expensive as well. Since solid-state technology obviously was not available to Tesla, he found a different way to operate his coils in CW mode- a generator that was specially designed to produce radio-frequency power. He had originally created it for high-frequency arc lighting. Today, I have seen absolutely no coils run by a high frequency alternator. Of course, an alternator would be admittedly difficult to build, but since it could probably deliver more power than a solid-state coil, it would be worth it. Does anyone know if there are any companies that still make these alternators? Would anyone be interested in recreating it? Should we even bother? Thank you for listening. Peace!

Posted by ElectricUmbrella 9 years ago  |  last reply 4 years ago


High School Football

This just happened at my school, I thought you guys in this group would like it: This week on the announcements, our sports director told us about the new rules for football games. None of them were too bad, except for not being allowed to take off our shirts (sports bras for girls) any more, in order to paint our chests. We were all pissed, and determined to do something about it, so this night at the game, the entire spirit section (huge) just sat their quietly and didn't cheer at all. By half-time, we were down 9-0 and the cheerleaders were pissed that we wouldn't even stand up. The principal called down the kid in charge and they talked for a bit. When he came back up, he told us that she had agreed to not wearing shirts on the homecoming game, as long as we didn't use the "Bullshit" chant. A few minutes later, someone else went down and talked to her, they convinced her to withdraw the policy starting next week, if we would start to cheer this game. In the end, it was a great success, and we won the football game, too!

Posted by Weissensteinburg 10 years ago  |  last reply 7 years ago


I need a high voltage, high amperage power supply

I am in need of a power supply that can give out about 500V @ 13A. I know it's high, but I want it to charge a capacitor(400V, 1000μF, 13A) for my coilgun. I've already tried a flyback charger, but the result was to blow the capacitor up(I think that it couldn't withstand so much voltage, despite the amperege was lower that its threshold). I don't want that to happen again and I want a relatively fast way to charge the capacitor. Also, the power supply needs to be portable. Another thing: the voltage is not mandatory to be THAT high; the amperage also(let's say...1 or 2 amps...)... However I need DC pulsating current, at 20 kHz NOTE: I really hope that I'm not asking too much.......

Asked by N3v3rm0r3 8 years ago  |  last reply 8 years ago


Ultra simple high voltage generator not working? Answered

 I found the low volt side of the transformer but when I attach the second terminal of the 9v it sparks at the battery and not on the high volt side. Help!

Asked by 2tautges 8 years ago  |  last reply 8 years ago


Is an upgrade available for IOS 11.0? High Sierra

Asked by poodledad1 1 year ago  |  last reply 1 year ago


how high is the voltage in the average neon transformer? Answered

I need to know because I may be using one as my power source for my Tesla-coil. 

Asked by nerd7473 6 years ago  |  last reply 6 years ago


can someone please help me with high voltage?

Does anybody know a cheap, easy way to make high voltage?

Asked by felix999 8 years ago  |  last reply 8 years ago


Why not get high voltage by boosting 300V to say 2KV ?

Hi, I plan to build High Voltage of 4KV. The output current is very low (say 100uA). I intend to use this as focus voltage in a CRT application. Hence, I am exploring the ways to do so. I have seen people building high voltage (8-20KV) using transformer followed by voltage multipliers. Now a days, MOSFETs are available which can withstand voltage upto 4.5KV. So it should be possible to create boost converter which could boost 300V to 2KV. Then one can further boost the voltage using voltage multipliers. The input voltage of 300V is achieved by rectifying the line voltage of 220V/50Hz. Visiting internet, I do not see anybody doing so. Hence I wonder what could be wrong in doing something of this kind. Could somebody elaborate ? Regards, Hardeep

Asked by hardeeps 4 years ago  |  last reply 4 years ago



what high school is good for me?

Im about to go into 8th grade and i have to start thinking about what high school is right for me. i love science and weather, i think i want to be a meterologist. i live in glassboro new jersey, and i need a high school that is close. i cant go to glassboro, i cant go to pitman because i dont live there, olma; pvi; and glouster catholic are too much money, and i cant think of anymore high schools...do you know any high school that is good for me?

Asked by megan_loveee 6 years ago  |  last reply 6 years ago


wiring and grounding high voltage transformer?

i need to add another power cord to my HV Transformer it does not look like it has any difference in which way it is wired could i just connect the power cord to it and in the second picture is the screw the ground to the case or can i just gound the case itself to a pole in the ground for example

Asked by MonstaM 8 years ago  |  last reply 8 years ago


How can I start a old monitor flyback transformer using its own driver?

I found an old monitor which i am pretty sure that it is not broken and it works now i wana use the high voltage output using the monitor driver but i dont know form which part should i get the high voltage please help me i need this immiedtly thanks

Asked by maaktabkh 1 year ago  |  last reply 1 year ago


Does anyone else hate this?

How willing people are to follow everyone else. Maybe its just high school, but I find myself confused as to how sheepish people are (willing to follow) I'm feeling angsty and all anti society right now

Posted by Weezer 9 years ago  |  last reply 8 years ago


Where to buy large capacitors for cheap? Answered

Building various things, like tesla coils, railguns, and wire exploding devices, reguires very large capacitors. I need to know where to buy some with high voltage and capacitance rating around 450v and 10000uF.

Asked by macgyver603 9 years ago  |  last reply 3 years ago


is it possible to step up a 10 v to 1kv by giving required turns in secondary side of a transformer? Answered

Is it possible to produce very high voltage from a single transformer which having very low input in primary side and large number of windings in secondary? why not?

Asked by albiemorkal 6 years ago  |  last reply 6 years ago


What is the most efficient and portable way to convert 3 volts (Battery power) to around 400 Volts?

I need a portable and efficient way to convert battery power (3 volts) to around 400 volts. I will be using alkaline batteries... This will be used to charge a high voltage capacitor bank.

Asked by brooklynlord 8 years ago  |  last reply 8 years ago



oil burner ignition transformer and uses question ? Answered

I recently just got a hold of a Allanson oil ignition transformer, the output voltage is 10,000 volts at 23 ma. the power cord was cut so i have to connect another power cord. what gauge or metal is recommended for the output terminals and can i attach a power switch to the 120 A.C. volt line. i was planning on starting off making a jacobs ladder then later on making a tesla coil after i have worked with high voltage a little bit longer are there any more uses for the high voltage transformer i have  

Asked by MonstaM 8 years ago  |  last reply 8 years ago



HV fun

Any plans for a marx gen? can you post some pics? also what is the wattage of national lab,s "Z" machine? Just asking!

Posted by maker12 11 years ago  |  last reply 11 years ago


i need a lightning globe can anyone help me?

One without a light bulb and one thats easy to make

Asked by odellcowgirl 7 years ago  |  last reply 7 years ago


1kv to 10kv?

What is the best and/or most simple circuit i can build to convert (300-1000)volts to (6-12)kilo-volts or higher? NB: the input will be output from camera circuit or mosquito swatter ,ranging (300 - 1000 kv )

Asked by lu2a 8 years ago  |  last reply 8 years ago


There's high-speed photography, and there's high-speed photography...

High speed bullet photography is cool - the precision of catching the bullet flying through a carefully-placed target. But how about hitting a moving target?  How about hitting a single drop of water? Dutch photographer Alexander Augusteijn can do it, apparently using normal flashes, but with the timing controlled by computers. Lex Augusteijn Photography via PetaPixel

Posted by Kiteman 8 years ago  |  last reply 8 years ago


for a coil gun is it better to have high current or high voltage? Answered

Asked by ravebot 10 years ago  |  last reply 2 years ago


Cheap High-speed Camera

Yes, I know, It's an oxymoron. I've always wanted a high-speed camera, but they are way too expensive. I was wondering if any of you fellow Instructablers have a high-speed camera that you've lost interest in, and are willing to sell for a low price. Alternatively, if any of you know how to make a cheap, high quality, high-speed camera, could you post an Instructable? Edit: I bought a Casio EX-F1 a while ago, and even made an iBle about it. I also have a bunch of videos here.

Posted by Spl1nt3rC3ll 10 years ago  |  last reply 2 years ago


High-Tech LED Throwie

Posted by UgniusR 6 years ago  |  last reply 6 years ago


Brandon Bird on the High Sea

This is a post that goes out to anyone who appreciates anything:Brandon Bird High Seas-I hope you like itBG

Posted by lamedust 10 years ago  |  last reply 10 years ago


Wiring high powered leds.

How can I wire 60 2.5v ,350mA and 20 3.5v ,350mA leds. The 2 different leds can have seperate power supplies? Trying to build a grow light for indoor vegatables. Thanks for any help

Asked by realkoolkat 9 years ago  |  last reply 8 years ago


Cameras make high voltage?

I heard disposable cameras use high voltage for the flash. so if you were to take out the capacitor from 2 and plug the lead to the flash from 1 camera into the battery holder for another you could keep putting them together to get higher and higher voltages right?

Posted by NetReaper 10 years ago  |  last reply 10 years ago


High Pressure Oxygen Fitting?

Does anyone know what type of fitting/threads are used on common high pressure oxygen gas tanks used for welding/cutting.

Asked by seedorfj 3 years ago  |  last reply 3 years ago