> For the complete documentation index, see [llms.txt](https://mujoseph.gitbook.io/mujoseph-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mujoseph.gitbook.io/mujoseph-docs/emma-mk1-drsstc/emma-mk1-drsstc.md).

# Emma Mk1 DRSSTC

Live documentation for the Emma Mk1 Dual Resonant Solid State Tesla Coil (DRSSTC).

<div data-with-frame="true"><figure><img src="https://2297250131-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzNHSl7dsTOS0XjlMXnIe%2Fuploads%2FhnJI8ZrqM1azae0IFWO0%2Fimage.png?alt=media&amp;token=38a78746-47d0-4912-912f-6623050f2a6b" alt=""><figcaption><p><em>Emma Mk1 DRSSTC</em></p></figcaption></figure></div>

<h2 align="center">In honor of my beautiful daughter Emma.</h2>

<h2 align="center">Forever my little lab partner. </h2>

<h2 align="center">Love dad <span data-gb-custom-inline data-tag="emoji" data-code="2764">❤️</span></h2>

<p align="center"></p>

<p align="center"></p>

<p align="center"></p>

<p align="center"></p>

## Acknowledgements

Thank you to my wife for her patience and for editing this documentation.

Thank you to the DRSSTC community.

## ⚠️ Safety and Legal Disclaimer <a href="#safety-and-legal-disclaimer" id="safety-and-legal-disclaimer"></a>

**Do not attempt to build, modify, or operate this project unless you are experienced with high‑voltage systems and understand the associated risks.**

This project involves circuits that can generate lethal voltages and currents. **Improper design, construction, testing, or use can result in property damage, severe injury, and/or death.**

* You assume all risk for any use, reproduction, or modification of this work.
* The author disclaims all liability for any injuries, deaths, losses, or damages arising from the use or misuse of this project, to the fullest extent permitted by law.
* **This is not a finished or certified product. Expect bugs, incomplete features, and potential design errors. Use only as a reference or starting point for your own design.**

By using this project, you acknowledge that:

* You are qualified to work with high‑voltage equipment, or you will not proceed.
* You accept full responsibility for your safety and compliance with all applicable laws, codes, and standards.
* You understand that reproducing or adapting any part of this work is entirely at your own risk.

**If you are unsure about any aspect of high‑voltage safety, do not use this project.**

## High-Level Diagram

<div data-with-frame="true"><figure><img src="https://2297250131-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FzNHSl7dsTOS0XjlMXnIe%2Fuploads%2F3cpIjTVcQJopOjPqjooq%2Femma_mk1_drsstc_overview.svg?alt=media&amp;token=bcfe92d7-eebb-4054-9b17-46e43bd8447c" alt=""><figcaption><p><em>Emma Mk1</em> Overview</p></figcaption></figure></div>

## Specifications

| Parameter          | Description                       |       Value       |     Unit    |
| ------------------ | --------------------------------- | :---------------: | :---------: |
| $$f\_{res(sec)}$$  | Secondary tank resonant frequency |        264        |   $$kHz$$   |
| $$L\_{pri}$$       | Primary coil inductance           |         8         |  $$\mu H$$  |
| $$C\_{MMC}$$       | MMC bank capacitance              |       0.045       |  $$\mu F$$  |
| $$L\_{sec}$$       | Secondary coil inductance         |       19.83       |    $$mH$$   |
| $$C\_{tl}$$        | Topload capacitance               |       18.45       |    $$pF$$   |
| $$ESR\_{sec}$$     | Secondary coil ESR                |       47.93       |  $$\Omega$$ |
| $$V\_{in(sys)}$$   | System input voltage              |        120        |     VAC     |
| $$I\_{pri(max)}$$  | Maximum primary peak current      |        300✝       | $$A\_{pk}$$ |
| $$V\_{bus}$$       | H-bridge bus voltage              |        340        |      V      |
| $$V\_{DRV(gdt)}$$  | GDT drive voltage                 |         12        |      V      |
| $$V\_{GE(igbt)}$$  | IGBT gate drive voltage           | $$V\_{DRV(gdt)}$$ |      V      |
| $$f\_{prf(max)}$$  | Max PRF frequency                 |        200        |    $$Hz$$   |
| $$DC\_{prf(max)}$$ | Max PRF duty cycle                |         4         |      %      |

✝ The *Emma Mk1* was designed for a peak primary current of 300 A; however, 800 A was achieved in [testing](/mujoseph-docs/emma-mk1-drsstc/testing-and-evaluation.md).&#x20;

## &#x20;:map:How to Proceed&#x20;

Head to [Hardware Overview](/mujoseph-docs/emma-mk1-drsstc/hardware-overview.md) for [mechanical](/mujoseph-docs/emma-mk1-drsstc/hardware-overview/mechanical-design.md) (enclosure, primary/secondary coils, etc.) and [electrical](/mujoseph-docs/emma-mk1-drsstc/hardware-overview/electrical-design.md) (PCB and wiring) documentation.

Head to [Firmware Overview](/mujoseph-docs/emma-mk1-drsstc/drsstc_driver-firmware-overview.md) for *DRSSTC\_Driver* firmware documentation. Used for controlling the resonant inverter of the *Emma Mk1*.

Head to [Software Overview](/mujoseph-docs/emma-mk1-drsstc/emma-mk1-drsstc-web-controller-software-overview.md) for the Raspberry Pi Python program documentation. Used for controlling the *Emma Mk1* via a web portal.

Head to the [*DRSSTCToolbox*](/mujoseph-docs/emma-mk1-drsstc/drsstctoolbox.md) section for the companion MATLAB project. Used for design verification and simulating the STM32 [HRTIM](/mujoseph-docs/emma-mk1-drsstc/drsstc_driver-firmware-overview/high-resolution-timer-hrtim.md) peripheral.

Head to the [Testing and Evaluation](/mujoseph-docs/emma-mk1-drsstc/testing-and-evaluation.md) section for collected data and analysis of the *Emma Mk1*.

## Repositories

* [Emma Mk1 electrical and mechanical design files](https://github.com/muJoseph/Emma-Mk1-DRSSTC)
* [Emma Mk1 Fusion360 design files](https://github.com/muJoseph/Emma-Mk1-DRSSTC-Fusion360-Design)
* [Emma Mk1 Motherboard PCB firmware](https://github.com/muJoseph/DRSSTC_Driver)
* [Emma Mk1 Raspberry Pi Flask web controller software](https://github.com/muJoseph/Emma-Mk1-DRSSTC-Web-Controller)
* [DRSSTCToolbox](https://github.com/muJoseph/DRSSTCToolbox)

## :interrobang:Corrections/Comments

#### &#x20;     [Contact Form](https://www.mujoseph.com/contact)