2n3055 flyback driver schematic

This circuit uses a common flyback transformer you probably have more than one in your house right now to boost typical battery voltages up to the multikilovolt range. This circuit, also incorrectly known as the 2n3055 flyback driver, bears some resemblance to the battery invertercontinuity tester which is published here. Basically we use a 555 timer as an oscillator to generate a square wave between 10100khz. A transistor driven flyback transformer page angelfire. Simple circuit using 1 transistor, a few resistors and capacitors to easily generate a high voltage from transformers from tvs and computer monitors. This is an efficient flyback driver for modern cylindrical rectified television flybacks. So for my first real flyback driver, i built a dual 2n3055 transistor based flyback driver. The single transistor circuit a good candidate but there is no obvious way to limit the collector voltage.

It uses two 2n3055 power transistors in a pushpull oscillator configuration. The schematic has been updated to include basic transistor protection in the form of a capacitor and diode. There are many ways to build flyback drivers, but even though some of newer designs may seem more stable or effective, the 2n3055 with 2 resistors, is by far one of the more simple designs. Shares were held in high voltage flyback more professional, but this application is simple to use transformer driver schematic. Project description this simple circuit is one among commonly used ignition coil drivers. High voltage can be dangerous or lethal when used incorrectly, and it is up to. While these are cheap and high temperature tolerant, they are susceptible to voltage spikes caused by the inductive nature of the load ignition coil. This driver circuit is based on the commonly used 2n3055 transistor due to it high power switching capability. Until the introduction of mazillis circuit, flybacks were typically driven with a single transistor and a feedback winding or with a pushpull transistor configuration e. Allsteps i also used this schematic for some of my flyback. You can use 2 x 2n3055 transistors in a better circuit that provides more power.

It is intended for power switching circuits, series and shunt regulators, output stages and high fidelity amplifiers. Ignition coils are a kind of high voltage flyback transformers used in automobile ignition systems. I was wondering, would just any power transistor work. Joyful season ladsmcom view topic slim fan wiring diagram wiring loom harness symbols 1 4 speaker jack wiring diagram 1966 c10 chevy truck wiring diagrams as well 1965 chevelle wir. Nov 17, 2012 i have a flyback transformer that i got out of an old crt monitor. A very simple road to your basic high voltage generator is the transistor driven flyback transformer. The infamous zvs mazilli flyback driver is very efficient in delivering high power current and seen have been used in many commercial appliance that require high voltage and power. These drivers were prone to failure and had high losses in the switching devices. The circuit can be optimized by varying the number of turns and the resistor values. How to use zvs driver to power tesla coils primary. The high voltage driver was originally touted as an improved way of driving flyback cores. Demonstration of a single transistor 20kv flyback driver. The flyback powersupply architecture and operation. The gist of it is that while one 2n3055 overheats very quickly, 2 paralleled 2n3055s will be able to split the current load and avoid overheating too rapidly.

Internal schematic diagram october1995 absolute maximum ratings symbol. You may also want to add some highfrequency chokes as shown in the schematic below. I build this circuit almost a year ago on a vero board, but it kept blowing the thin traces due to high currents flowing. I was looking for newer flyback driver designs and came across this one after quite a bit of searching. The problem is that the mosfet gets very hot in a few seconds. Offline flyback driver the walls the limit running power through multiple transformers just to power another transformer seems a bit absurd, so i though it was time for a direct mains powered flyback driver. I wanted something powerful and very reliable i hate replacing mosfets and this is what i came up with.

The step 9 page going further now includes a way to measure these illustrious voltage spikes with a regular volt meter. In some side notes the person said that instead they used a 2n6673 npn power transistor. June 8, flygack hey austin as you say yourself, the direction of the winding, or as its called the phasing of the feedback coil could be opposit of the primary coil and thus be driving it degrees out of phase, try to switch the feedback connections around. This circuit, also incorrectly known as the 2n3055 flyback driver, bears some resemblance to the battery invertercontinuity tester which is. Be careful if building any of these, high voltage can be dangerous. This is probably the most well known flyback transformer driver circuit. Tv flybacks seem to perform best with this circuit, monitor flybacks dont put out as much. Typically using old crt flyback transformer it can deliver more than 7000 v and normally its depend on configuration. It is the same topology with almost the same efficiency, and its actually a nice example what happens when a primitive circuit like this is used with slightly. It consists cathoderay tube tv high voltage transformer driven by a high frequency inverter, in order to obtain hv output.

Much like hv flyback transformers in cathode ray tube screens, they are. Nov 19, 2015 electronic project circuits tv flyback driver with 2n3055. This design uses a 555 timer ic to feed a square wave to a tc4422 gate driver, which drives two. I build this circuit almost a year ago on a vero board, but it kept blowing. I am not responsible for any bodily damage or property damage that is a result of one building or using this circuit. I just realized that this device is only the zvs driver. Mazilli zvs flyback driver kaizer power electronics. While rated at 5 amps collector current they can provide the needed current gain and voltage isolation for the pnp mj2955. Alright so i am making a flyback transformer driver, however, in the schematic it asks for a 2n3055 transistor. Ultra simple single transistor flyback driver circuit.

All parts can be obtained easily from radio shack, including the mosfet. If you prefer text over video he was kind enough to share a schematic and. It does not have a builtin high voltage transformer. Efficient flyback driver high volts circuit using ic555.

The resistor wout wattage is all 14 watt cfr,and the 1n414b you may use 1n4148 for fast switching,and also the diode dx2a it means its a diode,you may use. Electronic project circuits tv flyback driver with 2n3055. And, since i had this, i decided to make a driver, and, eventually, a jacobs ladder. It is the same topology with almost the same efficiency, and its actually a nice example what.

I have few ideas of circuit on this mazilliroyer based oscillator but i will start this basic one. The first and simplest driver designs generally consisted of a. This is an efficient flyback driver circuit, a good and fairly efficient flyback driver circuit. Both transistors 2n3055 must be mounted on large heatsinks. Oct, 2019 hmi already made this circuit inverter and i read some questions that need help. An excellent choice for a predrivers for both the 2n3055 and mj2955 are the tip120 and tip125 complementary darlington power transistors. This design uses a 555 timer ic to feed a square wave to a tc4422 gate driver, which drives two irfp260 nchannel mosfets via a custom 1. Ultra simple single transistor flyback driver circuit parts you will need, and how to get it working updated. The 2n3055 is a decent transistor, bw is typically about 3 mhz. I used a 9v battery to power the ne555 and a 24v 6a power supply to power the flyback.

The resistor wout wattage is all 14 watt cfr,and the 1n414b you may use 1n4148 for fast switching,and also the diode dx2a it means its a diode,you may use 1n5402,and to be able to have an output fix to 500 watt the transistor should be 14 pcs and it means 7 channel bec. Here is a list of high voltage power supplies with schematics and construction details, going from simple to complex. This instructable will show you how to make a cheap and simple driver circuit in order to get high voltage arcs out of a component called a flyback transformer. I too want to build one of these two create electrical wind. This circuit uses a common flyback transformer you probably have more than one in your house right now to boost typical battery voltages up to the multi. You need to connect a flyback transformer of your own see image 1. A half bridge flyback driver is a neat project for any beginner hv enthusiast, which reflects much of the way a commercial high voltage power supply might be made. A flyback transformer, sometimes called a line output transformer are used in. Jul 20, 2008 so for my first real flyback driver, i built a dual 2n3055 transistor based flyback driver.

The most popular onetransistor flyback driver is one that uses the ubiquitous 2n3055 npn silicon power transistor. I used a long terminal strip to arrange the resistor components. Although this is not needed for the circuit to work, it protects the. I decided to use the 2n3055 push pull flyback driver, as it would be at least somewhat better than using just the single transistor 2n3055 flyback driver, and the parts would be easier to get and put together in a short period of time it was. Eht transformer driver circuit high voltage flyback spark. Probably the very first high voltage device built by any enthusiast. It will make a several thousanddegree continuous 2 cm plasma arc. High voltage can be dangerous or lethal when used incorrectly, and it is up to the user of the. Most of the others i had seen were simple 555 based drivers and ones similar to the single or double 2n3055 transistor design. Oct 20, 2007 using a mosfet instead of a 2n3055 would allow you to use much lighter resistors, a 14 watt, and they could be 100 times their current resistance because a mosfet is essentially a transconductance amplifier while a 2n3055 is a current amplifier, hence the need for lower resistance values. Resistors of the schematic were supposed to be 240. This supplyalso called a power converterhas two distinct operating phases. When a person who has little experience in the world of projects, the information they find is critical.

An even simpler circuit if you have a smpsu testing and results. Since the leakage inductance of the transformer provides the current limiting, and there is never dc component on the primary, arcs can be safely drawn from the transformer without. For most hv enthusiasts this circuit is completely adequate. He said its a flyback, did not furnish a schematic. Flyback transformer driver for beginners electronic circuit projects. Thats how you would wire a zvs driver to a tesla coil. I dont think that steven dufresnes flyback driver is. It could be used for switching in the 50 khz range. The step 9 page going further now includes a way to measure these illustrious voltage spikes with a regular.

Voltage current regulated 2n3055 lm723 power supply. This circuit isnt precisely the 2n3055 driver you have seen on other websites, as the two highwattage resistors used in those schematics are. The output high voltage depends on the type of flyback and the supply voltage, but should be on the order of 1030kv. This driver rectifies mains and produces a 320v dc source. Introduction a flyback driver is a common amateur high voltage generator. This driver is among the simplest, with just six components it will be able of delivering high voltage with a strong enough current for various experiments. Hmi already made this circuit inverter and i read some questions that need help. I spent a lot of time for finding resonant frequency around 15khz and duty cycle. It is the same topology with almost the same efficiency, and its actually a nice example what happens when a primitive circuit like this is used with slightly bigger input powers. Oct 17, 2019 efficient flyback driver high volts circuit using ic555. Mar 17, 2012 hi jozef, i have a cool update to show you and because of that you could add one more type of flyback transformer to the list a handmade flyback that i painstakingly made from an old recycled crt tv yoke that i first needed to take apart carefully, pulling the wire from it and winding it on a temporary cardboard toilet roll to save it for later use was pretty time consuming but it got a lot. Flyback transformer driver circuit diagrams, schematics. I pushed it higher for short periods and it survived and gave surprising performance. The 2n6673 is a 15 mhz device so it is superior to the 2n3055.

Introduction the mazilli zvs flyback driver is wellknown throughout the high voltage community for its simplicity and ability to deliver 2050 kv at high currents for a flyback transformer. Collections of eldorado wiring harness get free image about free download wiring amana ptc093a00gc wiring diagrams eh ph diagram sulfur speciation basic car parts diagram exterior. As a last resort, you can try constructing a low powered flyback driver, like the 2n3055 singletransistor one, then powering it on and placing the anode wire close to the bottom pins. Many sites doesnt provide circuits driving these transformers, they simply say that they are bad. Sep 11, 2011 to be honest i m more interested in a simpler but powerful flyback driver, so i researched about drivers that utilise only one transistor. May 23, 2016 demonstration of a single transistor 20kv flyback driver.