I will say this though Many of the parts can be substituted, and the circuit can be tuned by doing so: The parts needed are listed on the schematic on this page. This circuit uses very little in the way of parts. The theory of the circuit is discussed later in the Instructable. In this circuit, a few components have been added which dramatically increase the power that the circuit can put out. The bad reputation for the 2n3055 comes from it being used in the usual single-transistor flyback driver, which puts a lot of stress on the transistor. That being said, this circuit works incredibly well with it. They are prone to burning out, sometimes spectacularly. Loved because it is so easy to get (even Radioshack sells them) and hated because they generally stink. This circuit uses the venerable 2n3055 transistor, which is loved/hated by flyback driver builders. This Instructable is intended to take much of the theory presented in the thread and condense it into a quick how-to for beginners. I am going to say right now this is not my circuit. Almost all modern flybacks have an air gap, so if a new on is being used, checking is not necessary. This means that the core is not a loop all the way through, but is rather shaped like a C with the gap being about a mm thick. Make sure that the flyback transformer you are using has an air gap. So for this project they are recommended. That being said, DC flybacks are easier to get. The AC flybacks can operate at higher power, since there are no rectifier/multiplier circuits built into them like the DC flybacks.
Older flybacks had AC power output, making them the ones you want. Many modern flybacks also put out DC voltage. Every single CRT (big, heavy kind) TV that people are throwing out now has one, the bigger the TV the bigger the transformer.īut unlike many transformers that you find in electronics, which are designed to handle standard 60 hertz AC power, and are step down transformers, flyback transformers operate at much higher frequencies- around 16 khz or sometimes higher. High voltage can be dangerous or lethal when used incorrectly, and it is up to the user of the circuit to use high voltage safety rules and maintain their own safety at all times.įlyback transformers are some of the most commonly used high voltage supplies by hobbyists- mainly due to their relative simplicity and how easy they are to find. It also can be used in audio power amplifiers as it has a good amplifying factor and gain is almost linear.I am not responsible for any bodily damage or property damage that is a result of one building or using this circuit. This is a current control device, in which a small current at the base controls a large amount of current at the emitter and collector side. It is manufactured with the epitaxial base process, mounted in a hermetically sealed metal case. 2N3055 is a silicon NPN transistor, designed for general purpose switching and amplification applications.
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