A BM235 customer has a BM235 that drains the batteries in OFF switch mode, lets look at the PCB to find out the possible culprits. Potentially applicable to any battery powered product. Forum: https://www.eevblog.com/forum/blog/eevblog-1449-what-causes-excess-battery-drain-(bm235)/

How to convert a Fluke 77 IV average responding multimeter into a True RMS model 177 for 10 cents. *Plus calibration gear Should also work for converting a Fluke 83V to 87V True RMS measurement vs Average Responding And how to calibrate a Fluke multimeter. Fluke 87V service manual with schematic: https://xdevs.com/doc/Fluke/87V/Fluke_87V_Full_service_manual_with_schematic_and_electrical_parts_list_Service_Manual-87VANFullService.pdf 00:00 – Hacking ...

Why are Fluke multimeters so expensive? PART 2 A teardown of the Fluke 70/170 series vs the Brymen BM786. Is there any design and construction difference that justifies 2-3 times the price? 00:00 – Fluke vs Brymen 01:07 – The Yellow Peer Pressure 01:57 – Fluke 77/177 vs Brymen BM786 04:01 – Ruggedness 05:05 – ...

Analog Watt Hour energy meters are fascinating! How they work, teardown, and experiments. Thanks to Max Button for sending this in to the mailbag. 00:00 – Watt Hour Energy Meters 02:11 – Teardown 05:13 – What’s to stop it taking off? 06:40 – Does it work? Testing with a load. 07:24 – Can you get ...

How to simulate a x1 oscilloscope probe in LTSPICE. And how to use the lossy transmission line model in practice with the spice directive. Forum: https://www.eevblog.com/forum/blog/eevblog-1445-how-to-simulate-an-oscilloscope-probe-in-ltspice/

XMAS Mailbag featuring Mrs EEVblog, Sagan, and Huxley! Forum: https://www.eevblog.com/forum/blog/eevblog-1444-xmas-mailbag/ SPOILERS: Badge https://bit.ly/3m3t4Yj RF Antenna DigitalCool PCB Coaster: https://www.tindie.com/stores/digitalcool/ Neon photos from a future Indian EE Casio OH-7000G overhead projector calculator Trevor’s Bench https://www.youtube.com/c/TrevorsBench Circuit Mess Nibble STEM kit: https://circuitmess.com/nibble/ kWh meter Spotty solder paste dispenser: https://avdweb.nl/tech-tips/pcb/solder-paste-dispenser 1980’s Appliance control from your phone Curz Scanner: ...

A follow-up video to the Electrodynamic Shaker, showing you the critical importance of Coherence measurement. Something you’ll only get taught in the school of hard knocks! Using the Ling Electrodynamic shaker, a measurement accelerometer, and a Dynamic Signal Analyser to set up a vibration test system. 00:00 – Electrodynamic Shaker 01:20 – The most inportant ...

An innocent TO-220 regulator gets tortured using a mystery device from the bunker. The art of environmental PCB testing. 00:00 – What is this thing? 01:00 – I used to use these all the time 02:40 – Electrodynamic Shaker 03:56 – How PCB’s are vibration tested 07:00 – Teardown 08:10 – Accelerometers 12:27 – The ...

Repsonding to Adam Something’s video claiming that electric buses are a scam. Lets analyse his claims and look at what’s really happening with the cost benefit anlysis of electric buses vs diesel and electric trolley buses. Adam’s video: https://www.youtube.com/watch?v=AqHsXv7Umvw 00:00 – Electric buses are a scam 01:20 – The claims 01:50 – Growth of electric ...

Teardown of a mid 90’s vintage Pentax IQZoomEZY film camera. Forum: https://www.eevblog.com/forum/blog/eevblog-1440-pentax-film-camera-teardown/