A flyback transformer fbt, also called a line output transformer lopt, is a special type of electrical transformer. A very easy setup to get high voltage from a flyback transformer, with using the circuit of a cfl. Quickly find the best current transformer or current sensor for your application. High voltage from a cfl and flyback transformer youtube. Designing flyback converters using peakcurrentmode.
The cfl flyback driver april 8, 2011 the stash no comments since all you lazy fucks didnt want to build a zvs driver, heres a way to make high voltage easier. Converting a dead cfl into an led tubelight homemade. Operation condition under critical or continuous mode set under what condition the. The 6bg6 tube is a tv output tube that drives the flyback transformer. Loneoceans laboratories flyback driver circuits gao guangyan.
Flyback driver with mosfet z44 make 0 volt new project duration. That will provide the transformer with the high voltage, high frequency ac it need to run. Fuji circuit cfl driver for mac download not the lowest, but definitely not expensive. Coilcraft ga3172 flyback transformer for the microchip pfc. Creating an electric arc ive always wanted to create an electric arc but dont know.
This circuit is somewhat dangerous, and can give you some nasty shocks and burns if you arent careful, not to mention the. A flyback transformer is traditionally used to generate high voltage signals at a high frequency. Flyback transformer driver circuit diagrams, schematics. Flyback transformer design instructions design tool. Often, the crt itself is blamed when the display has actually experienced a flyback transformer failure. Make a high voltage power supply using a cfl lamp and a flyback. This circuit uses a common flyback transformer you probably have more than.
My 24kv high voltage jacobs ladder from diy flyback transformer driver using 555 timer. Ccm flyback transformer turns ratio calculation k n snp the transformer turns ratio can be calculated using the following formula. Many modern flyback applications allow for high voltage designs up to or. Efficient flyback driver working on mains voltage 230v.
Not only the zvs flyback driver is powerful, but it is very dangerous. Bad result from the cfl driver for the flyback transformer. Try not to break the bulb, you just want to crack open the plastic. Unlike a normal transformer which operates at 50 60hz, a flyback transformer is designed to operate at high frequency, so we cannot simply connect a primary on the flyback powered from. Im trying to build a hv generator and for the purpose im using cfl driver 11w400v and a. The flyback converter is used in both acdc and dcdc conversion with galvanic isolation between the input and any outputs. This circuit isnt precisely the 2n3055 driver you have seen on other websites, as the two high. Get a big one, the bigger it is the more powerful your driver will be.
Flyback transformer driver using an electronic ballast. A taser circuit also known as stun gun circuit is one nonlethal electric shock producing unit used to paralyze a person for a time being without causing any severe damage. They hold a lot of energy and just the single big pulse capacitor connected in series with any cfl driver circuit on the primary of the flyback gives. It was initially designed to generate high voltage sawtooth signals at a. The challenge with the flyback transformer is to find 3 pins out of 10 to 20 pins.
A flyback transformer is one in which primary current is allowed to flow until the core is almost saturated, and then suddenly cut off. If all goes well then a few thousand volts will come out of the red wire. You can easily pump several hundreds of watts into the flyback transformer and the output current would be around 50ma. Here are some tips and tricks you should know before doing this. Sainsmart zero voltage switching tesla coil flyback driver. If the dutycycle is low then a huge current is for only a moment and the voltage. Fusion chip, try swapping those pins and see if you can get it to work. The flyback transformer is an integrated transformer which mean it has built in rectifiers and divider networks and several low voltage windings. But by replacing the fluorescent bulb of the cfl with a flyback transformer, spectacular voltages can be. The flyback converter is a buckboost converter with the.
This is an efficient flyback driver for modern cylindrical rectified television flybacks. If you can get the schematic of the flyback transformer that will save you time. The high voltage present in the many turns of wire, with the thin insulation required for the transformer. An17 flyback transformer design for topswitch power. The flyback transformer with suction cup cutthe cut wire in the upper right corner is the hv secondary the fluorescent tube ballast hacked as fbt driver the 10 pin input. A compact florescent lamp is one of those swirly lightbulbs. You need to match your switching frequency and winding data to the ferrite material.
A dimmable onestage highpowerfactor flyback led driver may have an efficiency of 80% at 120v ac input with 33v dc output at 350 ma. Very easy hv power supply, you only need a television flyback and the circuit from a cfl lamp. How to get 100kv out of your flyback very simple setup. A flyback transformer is the main component of a flyback converter that generates high voltage usually in cathode ray tube devices such as television sets and oscilloscopes. I hope that my pictures help to educate a better way to use this flyback transformer and zvs driver for demonstrations and experiments using high voltage. The reason why ive put the 2n3055 driver in quotation marks is simple. Whats the output of a 5 watt cfl,and anyway of converting the output from a flyback transformer driven by 5 watt cfl,,soo do i connect 10. In this video i made flyback transformer driver using old cfl circuit, and experiment with this flyback arc. A very simple road to your basic high voltage generator is the transistor driven flyback transformer. Im not sure why but some ballasts just dont like it and some transformers dont give very impressive sparks. Power integrations 5245 hellyer avenue san jose, ca 958 united states phone 408 4149200 2019 power integrations, inc. Cfl ballast circuit diagram with how cfl circuit works images. Most flyback driver circuits have a trimpot for frequency and a second trimpot for dutycycle. An easy way to power flyback transformers hackaday.
This is a much more efficient circuit, which make use of the original primary winding of a flyback. You can easily pump several hundreds of watts into the flyback transformer and the output current would be around 50ma to 200ma or even more, which is way above the lethal rate which is 10ma. Transistor driven high voltage flyback transformer page. One pin will be the high voltage ground the other two pins will be that of the primary coil that will connect to the cfls electronic board. Flyback transformers are a frequent source of failure in crt displays. Developed for microchip to operate with pic16hv785 cmos microcontroller and mcp1402 gate driver.
A basic design example of a 1200 watt power supply power part is presented. Using an old flyback transformer from a tv or monitor. The crt tv already contains all the needed bits to do the job. Flyback transformer driver circuit electronics forum. The 12sq7 is a highgain amplifier that boosts the feedback signals to. Pulling a ballast out of a spiral cfl might be a cheap and readily available option. Flyback transformers are a great way to make a nice big electrical arc. He uses an electronic ballast intended for fluorescent light use to drive the transformer.
Use flyback converters to drive your leds electronic design. High voltage from a cfl and flyback transformer duration. Make a 100kv singing arc plasma speaker flyback driver. Im also going to put a capacitor in series with my 200w halogen transformer. They are usually anywhere from 14 to 60 watts, but once more, the bigger the better. Dug through a box of old cfls to see if one could really drive a flyback. How to wire a flyback transformer and make a highvoltage power supply duration. Make a high voltage power supply using a cfl lamp and a. Hello to everybody, my name is yngvin and im new to electronics but studying hard.