[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Qs on Using Modern TV Flybacks



Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, why not wind a new pair of coils on the bare part of the core. no reason
why it wont work for you. cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, October 10, 2005 1:47 PM
Subject: Qs on Using Modern TV Flybacks


> Original poster: "Jeff Bullock" <jeff@xxxxxxxxxxxxx> > > Hi All, > > I'm new to this list. > > I've been researching Tesla coils for awhile, looking at other folks > websites, etc. I'm interested in building a battery powered HV power supply > for an application which is very similar to TCs in its requirements. I > haven't made one yet, but I may even try to build a portable TC that uses > it. They look fun...in a dangerous sort of way :) > > Anyway, I'm particularly attracted to the HV supplies designs I've seen that > use a TV flyback transformer. I happen to have 4 that I salveged from two > color TVs and two color CRTs. > > Problem is that they are not like the old ones described in most of the > plans I've seen. They don't have an exposed primary on the opposite side of > the ferrite core, so you can't replace it with the two small coils shown in > schematics I've seen. They are the types that have two knobs on one side for > adjusting focus and screen (intensity?). One site does identify such as the > split diode type and says that the secondary coil is divided and that the > output is already rectified to be DC. > > Now they do have an exposed core arm which one could use to add windings to. > But if this doesn't work out, one could use a 555 chip to chop the power and > feed it to the existing primary. I have no idea how to find the correct > contacts to do so, however. > > Budget being limited, I would like to try to use thes coils that I have on > hand for my experiments. Does anyone have experience with them or know where > I can find more details on using them to generate HV? The diode rectified DC > output would be fine for what I have in mind since I will be charging caps > with it. > > Regards, > > Jeff > > > >