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MEP EP#239: Frictionless Spherical Cow TransformersParker
Garage Door opener hacking
Converting my normal style garage door opener to a “jackshaft” style opener
Reversing the direction of the A/C single phase motor?
Split phase motors
One phase is shifted with a large capacitor by ~90 degrees
In my application I just had to reverse the wires and the end stop wires
PyInstaller
Can take your python scripts and make it into a self contained application
Useful for non technical inclined people on your team
Cross Platform!
GUIs
Tkinter seems to work well in Win10 and Ubuntu 20 LTS
Stephen
High voltage low current measurement
Tony_W Recommended the ACS37002
Hall effect sensor that can be ground referenced in very high voltage applications
0.85m ohm conductor resistance
4.8kV RMS isolation voltage
VCC of up to 6.5V
-50 to 50A sensing range
Gain selection of 30mv/A to 60mV/A
In my situation I would want to monitor 0.1mA or 100uA. With a gain of 60mV/A that would be 60uV/mA so 0.1mA would be 6uV….. This may still not be the best solution because I would likely need a ton of gain and have to correct for any offsets.
Possibly to a tro prong approach - Measure voltage across known resistances in the circuit
Getting transformers manufactured for your product
What do you need to know?
How do you get started?
What are the specifications
Mains transformers
SMPS and flyback style “yellow tape” Transformers.
Show Notes
MEP EP#239: Frictionless Spherical Cow Transformers
Parker
- Garage Door opener hacking
- Converting my normal style garage door opener to a “jackshaft” style opener
- Reversing the direction of the A/C single phase motor?
- Split phase motors
- One phase is shifted with a large capacitor by ~90 degrees
- In my application I just had to reverse the wires and the end stop wires
- PyInstaller
- Can take your python scripts and make it into a self contained application
- Useful for non technical inclined people on your team
- Cross Platform!
- GUIs
- Tkinter seems to work well in Win10 and Ubuntu 20 LTS
Stephen
- High voltage low current measurement
- Tony_W Recommended the ACS37002
- Hall effect sensor that can be ground referenced in very high voltage applications
- 0.85m ohm conductor resistance
- 4.8kV RMS isolation voltage
- VCC of up to 6.5V
- -50 to 50A sensing range
- Gain selection of 30mv/A to 60mV/A
- In my situation I would want to monitor 0.1mA or 100uA. With a gain of 60mV/A that would be 60uV/mA so 0.1mA would be 6uV….. This may still not be the best solution because I would likely need a ton of gain and have to correct for any offsets.
- Possibly to a tro prong approach - Measure voltage across known resistances in the circuit
- Tony_W Recommended the ACS37002
- Getting transformers manufactured for your product
- What do you need to know?
- How do you get started?
- What are the specifications
- Mains transformers
- SMPS and flyback style “yellow tape” Transformers.
Creators & Guests
What is Circuit Break - A MacroFab Podcast?
Dive into the electrifying world of electrical engineering with Circuit Break, a MacroFab podcast hosted by Parker Dillmann and Stephen Kraig. This dynamic duo, armed with practical experience and a palpable passion for tech, explores the latest innovations, industry news, and practical challenges in the field. From DIY project hurdles to deep dives with industry experts, Parker and Stephen's real-world insights provide an engaging learning experience that bridges theory and practice for engineers at any stage of their career.
Whether you're a student eager to grasp what the job market seeks, or an engineer keen to stay ahead in the fast-paced tech world, Circuit Break is your go-to. The hosts, alongside a vibrant community of engineers, makers, and leaders, dissect product evolutions, demystify the journey of tech from lab to market, and reverse engineer the processes behind groundbreaking advancements. Their candid discussions not only enlighten but also inspire listeners to explore the limitless possibilities within electrical engineering.
Presented by MacroFab, a leader in electronics manufacturing services, Circuit Break connects listeners directly to the forefront of PCB design, assembly, and innovation. MacroFab's platform exemplifies the seamless integration of design and manufacturing, catering to a broad audience from hobbyists to professionals.
About the hosts: Parker, an expert in Embedded System Design and DSP, and Stephen, an aficionado of audio electronics and brewing tech, bring a wealth of knowledge and a unique perspective to the show. Their backgrounds in engineering and hands-on projects make each episode a blend of expertise, enthusiasm, and practical advice.
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