SAFELY TEST a Tube Amp // How to MAKE and USE a Current Sink // DIY Light Bulb Current Limiter

Published at : 23 Dec 2025

Safety Tip - This video details how I made my Light Bulb Current Limiter (Current Sink)
When testing or working on electrical equipment that is connected to your "Mains" 120V wall outlet, having a protection device like this is good idea.

A Variac is another option but a it a good one can typically cost over $150.00.
This DIY device can be made for under $30.00, even cheaper if you have some of the parts already!

Wiring Diagram: https://drive.google.com/file/d/13NQ0mk2TD2ygDiNRvpSipraS6dTAcZBd/view?usp=sharing

Lightbulb used: https://www.homedepot.ca/product/philips-300w-ps25-clear/1000436085

Socket Tester:
Amazon: https://amzn.to/3iuBRnr
Home Depot: https://www.homedepot.ca/product/klein-tools-dual-range-non-contact-voltage-tester-with-receptacle-tester/1001551079


Camera:
Canon M50
iPhone 11
Boya By-M1 Lavaliere Mic
Rode VideoMicro

Lighting:
Aputure Amaran AL-M9
Neewer 26" Soft Box
DIY Cake Pan Light: https://www.youtube.com/watch?v=DxlgxDP_aes

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