Introduction Due to the experience acquired in the DRSSTC III large tesla coil project, in 2021 I decided to improve it. Meet DRSSTC IV Specifications Driver: DDRX by Franzoli Electronics, based on Steve Ward's UD2 (includes phase-lead, overcurrent detection, undervoltage-lockout, tOn limiter, DTC limiter and overtemperature protection)Power Supply: 3-phase voltage doubler with automatic pre-charge by Franzoli Electronics, 220V(AC)in, 620V(DC)out, up to 11kWBridge: CM300DY-24NF IGBT's Full-BridgeDC BUS: Laminated, splitted in…

Introduction Due to the great repercussion of an old project on the internet, I decided to develop a DIY kit of it, keeping in mind good performance, robustness, simplicity and low cost. Meet Easy-Flyback driver! Specifications Power supply: Generic SMPS, 24V|30A (15A is plenty for only one unit, I run 2 units);Oscillator: 50% duty-cycle square wave generator using IC555 timer, 18 to 42kHz frequency range, tuned at 22.5kHz; Zero cross…

Introduction Due to the experience acquired in the Alpha-DR Twins project, in 2020 I decided to improve it. Meet Alpha-DR Mark II! Specifications Driver: Mini-DDR (includes phase-lead, over current detection, undervoltage-lockout, tOn limiter, DTC limiter and thermal shutdown) Power Supply: 220VAC full wave rectified mains, closed-loop automatic pre-charge + line filterBridge: BSM150GB60DLC IGBT's Full-BridgeDC BUS: Laminated, 1oz copper PCB + solder reinforcement, 1x 400V | 2.7mF BUS capacitor +…

Introduction Due to the experience acquired in the last 10 years, in 2019 I decided to design a new pair of small double resonant solid state tesla coils keeping in mind quality, robustness and portability. Specifications Main controller: DD3a (It has been improved, please, check "Mini-DDR" driver)Power Supply: 220VAC full wave rectified mains, closed-loop automatic pre-charge + line filterBridge: BSM150GB60DLC IGBT's Full-BridgeDC BUS: Laminated, 1x 400V | 2.7mF BUS…

Check out our latest video! The song "What's up" was from the band's debut album, Bigger, Better, Faster, More! Soon after, the song was released as a single in 1993. It came in #14 on the US Billboard Hot 100. Since that time, it has received considerable airplay. For those of you who wonder, "What's going on?", These Tesla coils are being controlled to make musical notes!