I know it's been a long time since I've posted anything. That does not mean I have not been doing anything! This time, after my successful YouTube post of the 200kv Quad Flyback driver powered by my CD-707 (Not yet posted here but can be seen on my YouTube "mostlymacros" channel), I designed a Tesla coil around a large power beam tube. The top tip is a crossbow bolt on a coffee can as my capacitor. Features of my oscillator design include a stabilization coil, plate tune and (~I/E) control.
Tesla coils produce very powerful EM fields. This one operates at about 300khz (300kc) and operates as high as 1500 volts at about 1amp. I have yet to get a complete reading however since I must build a meter capable of handling the RF produced as well as the high voltages used. Newer digital meters have pathetically low voltage levels. I have only one cat. III meter/scope as can be seen in the YouTube Video--and it's too expensive to risk here!
Here is my video of the project, click here to view. Coil is not at full power yet and not complete, I will create another video when it is and upload.
I don't like to get my good cameras too close to projects like this! Any kind of Tesla coil produces very powerful EM/RF fields and can produce several 1000 volts in devices near by so watch things like remote controls, cameras, laptops and memory cards. A metallic and thus somewhat shielded cameras is best. It is not complete yet, When I get the diodes for it's power supply (coming in the mail)-- it will be a self-powered unit that plugs right into any wall outlet. It can run on 120volts but requires a lot of power, as much as 6 amps in high settings on the 120volt side of things. About half what a regular microwave oven needs or so. Since it is an oscillator working with the feedback principle it produces a large amount of tuned RF at about 300khz, so you don't want to hook any long wires to VTTC/SSTC projects as they may create serious radio interference on nav. beakons and or other radio devices. Some filtration of the AC 120 volt side and/or HV AC side can help keep this RFI to a minimum. Thanks for checking out my site--Please subscribe if interested--I have been busy and will try to post more often. I have a backlog of cards to upload, about a half dozen videos and 100s of pics. So keep comming back! Thanks--G.Beasley KF7DFP