How to make a high voltage pulse generator
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Note 1 Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. STM32 Other. Add to Cart. There are two primary coil pin transformer. The thick copper wire is transformer main pin, and the thin copper wire is Transformer Feedback Pin.
Building a Pulse Generator
The middle of the two copper wire is positive. They are respectively Transformer Pin tail and feedback pin head. The positive connects red wire. Attention: 1. After you finish the transformers, you need keep the product under epoxy resin or insulation wax encapsulation if you want to keep it for a long time.
Because the product will be due to lack of air insulation strength of the coil breakdown caused by damage in the air work. The kit is used for 3. If you want ro increase input voltage, you need to increase the resistor the default resistor is ohm. If you don't increase the resistor, the triode is easily to be damaged.
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Note: This DIY product is to produce high pressure, just like electric mosquito swatter, if you touch it with your hand directly, you will have electric shock feeling, this DIY kit also has the same working principle.Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
CFLs can come in a variety of shapes and sizes. Generally the bigger the wattage the larger the voltage output. For this Instructable I got a 65 Watts light bulb. Most CFLs have a similar circuit topology. All of them have 4 wires coming out of them. The wires are in pairs, and each pair connects to a filament inside the light bulb. The CFLs I came across have the high voltage on the outer wires. You only need to connect the outer wires to the primary coil of the flyback transformer.
You will find a comprehensive description of CFL circuits on this page. Flyback transformers come in all different shapes and sizes.
Pick a big one. The challenge with the flyback transformer is to find 3 pins out of 10 to 20 pins. One pin will be the high voltage ground the other two pins will be that of the primary coil that will connect to the CFL's electronic board. If you can get the schematic of the flyback transformer that will save you time. However you can figure out the pins by following the instructions here.
This is how the finished high voltage supply looks like. Remember, this is a DC supply. The output from the thick wire is positive. In TVs and CRTs this high voltage output drives the negative electrons from the filament to the screen.
If you need AC high voltage, you have to remove the built-in diode or find an old flyback transformer that does not have a built-in diode.Catholic retreat reflections
The first time I build the circuit, it worked immediately. I used a 26 watt CFL. It didn't work. I was disappointed.
I thought that the CFL electronics were shot. But when I reconnected the fluorescent tube to the four wires, the CFL worked again. I realized that this type of CFL circuit needed to "sense" the filaments in order to operate. Remember, I was only using the outer wires and leaving the two inner wires alone. So I put a resistor across the outer wire and the inner wire. The circuit worked! But within seconds the resistor was in flames. So I decided to use a capacitor in place of resistor.
Also a capacitor does not heat up because it provides a low resistance path for AC currents.I'm sure almost all of you have used a microwave at some point in your lives. As a child, I always found microwaves fascinating; the idea of heating food with invisible energy, and even creating lightning should the user accidentally microwave metal! However, microwaves are not only used for heating food. Microwave energy generally falls under the 2.
This same band is used by many wireless technologies such as Bluetooth and Wi-Fi. The range energy depends on the "strength" of the wavelength. Well, it really depends. In this article, I'll be going over the simple basics of a microwave weapon, since microwave energy is a huge topic.
In its simplest form, any waveform transfer of energy starts with excited particles and ends with excited particles. Inside a microwave, you'll find a large transformer called a MOT or Microwave Oven Transformera large capacitor rated around kV; uFsome high voltage diodes for rectifying the alternating current from the transformera magnetron the microwave emitter—I'll go into this laterand other electrical components for operating the main electronics.
In a Microwave Weapon MWthe components can be as simple as a magnetron, a transformer, a diode, and a capacitor. Of course, the magnetron is certainly not that simple, consisting of several finely tuned "antennas" and other components. A basic illustration of how a magnetron works is pictured below:.
The round "1" is an electron source, the area between the power source and the antenna is the electron "accelerator", and the antenna itself is a simple way of "amplifying" and broadcasting the electron energy at a specific frequency. When these "tuned electrons" hit an object specifically water or metalthey excite the molecules and generate heat, or in the case of metal, electrical energy.
This is why microwaves are so dangerous compared to EMPs. Microwaves not only wreck havoc on electronics, but also can harm living beings. Microwaves are extremely dangerous. If you feel even the slightest uncertainty towards the physics, dangers, and overall understanding of microwaves, DO NOT construct a microwave weapon. The best way to create a homemade microwave weapon is with an old microwave. If you want to upgrade to a more powerful, long range device, it's practically impossible unless you have a physics lab with extensive measuring equipment.
However, an average microwave puts out 1, watts of energy, quite enough for destroying electronics. Microwaves tend to "fly in all directions" unless they are directed. However, this is what the antenna does—directs the microwaves. In my experimentation, I discovered that a slight cone-shaped metal funnel has the best microwave-focusing ability. I was able to fry an old cell phone from up to 10 feet using three magnetrons and one funnel.Arrow season finale 7
This constitutes to about 6, watts W of directed energy, quite an accomplishment for 15 bucks spent at a thrift store. The circuit diagram for each individual magnetron looked something like this:. On a basic level, the circuit consists of a transformer, a voltage doubler diode and capacitor and a magnetron.
The three MOTs draw lots of power, so I had to hook everything into a thick, direct mains line. The magnetron itself looks like this:. There are two large magnets that "direct" the electrons as they pass through the antenna. Also, the device has a heat sink to cool off. There are many other components and function aspects of the magnetron that are very complicated, but interesting.If you work with digital and logic circuits and we all doyou will find this instrument handy for design, troubleshooting, and calibration of electronic circuits.
Although I own a somewhat expensive commercial function generator, I find that this pulse generator is the one I reach for most of the time. The generator is fairly easy to build and uses a straightforward design. It requires six integrated circuits and two transistors. In addition, you will need a power supply of 15 volts at mA.
In two years of use, I have not felt any need to change the design, as it has worked well under all situations. I housed this unit in a 7 x 4 x 5-inch box. If you build it exactly as shown, do not use a box any smaller than this, as you will be crowding the front panel controls. Before we get into the construction, I feel that a description of the theory of operation is in order.
Referring to the schematic Figure 1the heart of the unit is the U4 rate generator and the U3B width generator. The U4 multivibrator rate is set in six steps by capacitor selection of S6a, S6b.
The heart of the unit is the U4 rate generator and the U3B width generator. This, in turn, is varied by potentiometer P2 to give complete coverage between bands. The RATE change is two microseconds to one second continuous with R9 and P2 values giving an approximate 10 percent overlap between ranges. One gate sends the signal to J3 internal trigger out. The other gate sends the signal to U2b-P5, which isolates the various inputs from each other by an OR gate function.
The positive edge from the output of U2b triggers the width generator, U3b. Incidentally, all of these circuits are positive-edge triggered. U3b is a monostable multivibrator, and its output width is determined by capacitor selection via S7a, S7b.
As in U4, it is varied by potentiometer P3 also providing a 10 percent overlap to provide continuous converge from one microsecond to milliseconds in width.
The output of U3b is sent through U2c to the base of Q1. In conjunction with S4, U5c and d provide the option of positive- or negative-going pulses Q or Q not. The pulse level at this point is 15 volts peak, and the job of emitter follower Q1 is to drive the pulse-level control P4 and the translator circuit R14, R15 to operate TTL level U6 for the rapid rise and fall times required by this family of circuits.
From the output of the pulse-level control, the pulse is sent to Q2 via R Q2 is a current amplifier to drive very low impedance loads. Its output impedance is on the order of 10 ohms and will easily drive ohm loads at five-volt logic levels. The output at this point is zero to 14 volts, peak. R17 is a pull-down resistor to help speed up fall times. R16 was arbitrarily chosen to reduce overshoot and ringing.
Switch S2 run-stop provides several options. In the run position, the U4 rate generator runs continuously and provides the trigger for U3b. In the stop position, U3b triggering can be any of the following:.A Multi-purpose power pulse generator capable of driving Tesla Coils and other high power coils.
This device is based on the Homemade Tesla Coil project and uses an improved version of the ignition coil driver circuit to generate high voltages. This unit quite simply can generate high current pulses of variable frequency and pulse width. This unit uses the Square wave frequency generator shown in the DIY Devices section for the main signal source but any other signal source can also be connected to it.
The input signal is amplified using an array of nine 2N power transistors T2 which is capable of switching huge amounts of power. A switch allows power to be sent to external coils for low voltage applications, or the internal ignition coils can be powered for charging a large HV pulse discharge capacitor.
The high current pulses from the Lead Acid Batteries makes the signal generator unstable in the original design. The new version uses a completely independent signal source with its own battery to minimize the interference. There is also an extra buffer circuit to protect the 2N Transistors from voltage spikes caused by the inductive kickback from the auto ignition coils. All the power electronics are housed in an Aluminum case finished with panel meters, IO ports, and switches.
The signal generator circuit is housed in an independent unit with its own 9V battery. This can be connected to the main unit via a shielded cable allowing it to be operated from a safe distance. The high voltage output from the ignition coils is rectified using some large high voltage diodes D2 designed for X-Ray machines. The rectified output is connected to a large capacitor C1 for smoothing the DC output. These also help to protect the the rectifier from short circuits, arcing currents and possible back EMF or transients.
The main high voltage front panel on the box has sockets for HV DC output, an internal HV pulse discharge capacitor, and an internal spark gap. This allows the high voltage circuits to be configured in a number of different ways without having to re-wire any internal components. The image on the right shows how the panel is wired to drive a Tesla Coil.
The spark gap can be adjusted using a handle on the side of the case. Depending upon the resonant frequency of the TC being driven, it may be necessary to adjust the capacitance. This can simply be done by adding more capacitors in parallel, or using a separate one. This image shows the interconnected outputs of the ignition coils. The ignition coils are wired in parallel to give a higher output current.
All the high voltage cabling inside the box is placed inside flexible plastic tubing for added insulation. You can see here that the low voltage connections to the ignition coils are also covered with tubing for added protection. The case is grounded by connecting a thick wire to a long metal spike driven into the ground. All of the ground connections for the internal circuits are also connected to the case.This device is capable of generating high voltage arcs, which can be used as an ignition system for a spud gun.
Or other things where High Voltage pulses are needed for testing purposes. Warning: This project uses High Voltage and can be dangerous if used wrong. Build and use this on your own responsibility and never use this on living things. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. First cut the excessive part from the tube off.
Make an Ultra Simple High Voltage Generator
Than you can use a piece of sand paper or a milling machine to trim the height of the module to fit inside the casing. When I was using the milling machine the tube broke and I was able to take the whole tube off, which was also fine.
Update: I added a lot of hot glue at the inside on the electrodes to prevent internal arcing.
Good job Bruce! Made one too. Adding hot glue internally doesn't really help to prevent arcing. Best thing to prevent this is to keep the outside electrodes only about mm from each other! Reply 1 year ago. By-the-way: did you know that your HV pulse generator pricks tiny holes in a sheet of paper held between both electrodes? NICE invention for a cheap braille writer device. Really cool!
I have a question regarding the used circuit. Which IC are you using and where can I buy it? Reply 2 years ago.Hello everyone, this is project How-ToDo.
Since some of you asked to show in detail my variable frequency arduino generator for high voltage power supply, here it is. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
The circuit is very simple, Arduino nanoI2C OLED display to 68 pixels3 transistors and three buttons, two of buttons are responsible for frequency adjustment, and the third button turns ON the output signal.
It's would be good to add an optical isolation or driver with GDT but I don't have components for that. Primary coil on the transformer contain turns with 14 gauge wire, but 20 AWG wire should be enough. Also for this circuit it is necessary to make a gap between the halves of the ferrite core, I simply put a layer of paper tape. The frequency is adjustable from 30Hz to 1MHz, and since its based on built-in PWM, the higher the frequency - the greater the steps, at the end it amounts to tens of kHz, but for my purposes in the range of up to kHz it's good enough.
I also added power from the battery, it's some sort of power isolation, but it's going to work fine just with LM Actually there is not much to talk about, hope you like it, see you soon! Find me on social media:. Question 1 day ago on Step 2. Hi, I am trying to replicate your generator without success. Some suggestion Thanks, Cesar. Question 1 year ago. Question 2 years ago.
Maximum is bytes. Question 2 years ago on Step 2. Could you please Help me somehow?Macbook a1534
Answer 2 years ago. Fantastic project! Could this be used as a variable frequency generator in my project? I need to build an inverter from 12v DC input and to output v AC with variable frequency between Hz and 3kHz upto 3amps. This will drive an electrolumiscent panel. Would love to hear your input Introduction: Variable Frequency Arduino Generator.
More by the author:. About: Just do things, electronics, woodwork, etc. Add Teacher Note.World religions chart answer key
Did you make this project? Share it with us! I Made It! Answer Upvote. MoizR4 Question 1 year ago. I only compiled the code for Nano.
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