NE555 radi max. Planirano sam sve spojiti na jači transformator koji da je oko 20V na sekundaru ali onda trebam spustiti napon 555ici.

Here is a list of high voltage power supplies with schematics and construction details, going from simple to complex. Be careful if building any of these, high voltage can be dangerous! Simple flyback driver 10-15kV Probably the very first high voltage device built by any enthusiast. It uses a power transistor (2n3055) and two coils: a primary and a feedback on a flyback ferrite core. Schematics and details: 2.

Push Pull (dual) 2n3055 flyback driver You can use 2 x 2n3055 transistors in a better circuit that provides more power. However this too is prone to failure due to the transistor limitations. A large heatsink is required as well.

Voltage multipliers If the flyback doesn’t provide the voltage you require, a solution is to build a voltage multiplier. You can hook it to any flyback secondaries that doesn’t have built-in rectification (diodes or multipliers).

A very easy to build design is the Villard cascade voltage multiplier: To understand how it works, you can read more on it. I’ve built mine in a plastic CD box, this way I can add liquid wax for better insulation. Here are some interesting tests using the multiplier: 4. 555 Timer flyback driver This circuit uses a 555 timer IC to pulse a power transistor with square wave at a frequency that is set by the capacitor and the potentiometers. It is a very efficient circuit, assuming the frequency is correctly adjusted.

Circuit diagram: See it in action. 555 Timer dual ignition coil 30KV An even better approach for those that seek more power and higher voltages is using ignition coils from cars. I’ve got 2 from a scrapyard, and connected them in anti parallel: The driver used is the same as above (with a 555 timer), the difference is in using a different pot, resistors and capacitor for another frequency interval, and stronger mosfet, suitable for ignition coils: Adjusting the frequency with the pot, I got some tick white arcs, similar to those produced by a flyback with a ZVS driver. A good indication of the power running in the system.

ZVS Flyback driver A powerful driver with excellent results (no transistor heating, a lot of power pushed), is the ZVS (push/pull) driver, that was described in. Here is the circuit diagram: 6. Dual Flyback driver ZVS gives a lot of power, but the voltage is not great. You might want to put two flybacks in series, and use 2 separate ZVS drivers, or a single driver with the 5+5 primary coil wrapped around both ferrite cores: 7. Tesla Coil The ultimate in high voltage records, this device was discussed. Taking advantage of the way the secondary is constructed, several issues are solved by construction: the secondary insulation is trivial.

Compusoft group. High frequency Solid state tesla coil (HFSSTC): More on the HFSSTC. To be continued. Folosesc bobine de inductie (sunt detapt transformatoare nu autotrafo) de la Chevrolet Cavalier(sunt in philly, sua) legate in paralel la intrare si in serie la iesire.

Folosesc mnosfeturi sau igbt-uri de putere ca switch, dar tot mi se prajesc pentru ca e prea mare tensiune autoindusa din primar. Trebuie sa fac un snubber mai bunFusorul (am sa fac niste pozeodata) n-a functionat niciodata cu deuteriu sau altceva decat cu aer,e bun numai de bronzat la fata ca in felul acesta (grila externa, grila interna) n-o sa scoata energie extra niciodata! Tyc, use a totem pole setup (generic PNP+NPN) before the mosfet, just to be on the safe side. I’m not familiar with the 7555, but regular 555 will NOT work with a mosfet. So just add the totem pole and see if this helps. You say you’re using an induction coil?

Please note that an induction coil works at much Lower frequencies than a Flyback transformer. Instead of the 100nF capacitor, try as high as 1uF. When the coil works best, you should hear an annoying bass-like sound, like a strong vibration coming out of the coil, and NOT that high-frequency sound like in the case of ferrite core transformers. Last issue, indeed the coil might be broken, you should be able to measure the resistance of the secondary, if it’s >4KO the coil should be ok, but this is not the best test. Note that there is an even easier circuit you can try, using a Light Dimmer and a capacitor like shown here: However I never tried that setup yet. Intradevar,555 nu poate dar 7555 poatecele mai bune rezultate le-am obtinut cu LMC555D.Pt E555 e necesar etajul push-pull. Tensiunea in gol e de 7KV,iar pe sarcina cu impedanta de 500ohmi pica la 2KV.Tensiunea in primar e limitata cu transil bidirectional,la 300V.

Oscilatoarele autoblocante sant exclus deoarece se doreste reglarea curentului,alimentarea e la 12V cc. Finalul(IRF840) nu se incalzeste,fara radiator.

Frecventa de repetitie e de 1Hz cu factor de umplere de 10%.Consider ca in 100ms se incarca bobina bobina a fost probata pe un motor,e in carcasa de Al(nedeformata). Salut, Ai fi dispus sa ma ajuti si pe mine, as dori sa inteleg exact matematic ce se intampla, imi este foarte usor sa fac o replica la ce proiecte faci si multumesc in numele tututror pentru ca ne impartasesti experimentele tale (si noi putem profita de ele 🙂 ) dar eu am o mica problema, la faza cu transformatoare eu is cam bata si daca mi-ai ptea explica putin te rog sau mi-ai putea sugera cateva link-uri pentru ca sa inteleg si eu mai bine de ce atatea spire si alte detalii de acest gen. Daca ai chef si timp te rog sa dai un mail pe •. I need a HV generator DC preferably, AC may work. But I need to test the insulating capability of oil filled tubes at 130 kv. What would you ask for them? We can use Pay Pal or direct wire.