How Does a Spot Welder Work? Review, Teardown and Analysis of a BIFRC DH20 Battery Spot Welder
A while back I built a spot welder with an old microwave oven transformer (MOT). Since then, I have used […]
Teardown of an OWON HDS272S 3-in-1 Handheld Oscilloscope/DMM/AWG – Compared with Hantek 2D72
I recently got my hands on an OWON HDS272S, a top-of-the-line 3-in-1 handheld oscilloscope/digital multimeter/arbitrary waveform generator in OWON’s HDS2000 […]
Teardown of an RSRF Cross-Polarized Dual Band Cellular MIMO Panel Antenna
In this blog post, let’s take a look at a cross-polarized dual band MIMO Panel antenna that is designed for […]
Cel-Fi Go X Cell Signal Booster Extreme Teardown
About a year ago, I bought a Cel-Fi Go X signal booster for my house as where I live the […]
Teardown of a UNI-T UT61E+ True RMS Multimeter
UNI-T‘s UT61E+ is a 22,000 count true RMS multimeter. It was released towards the end of last year and is […]
Teardown and Testing of a 1500W Pure Sine Inverter
A while back, I did a teardown of an 800W Reliable Electric Pure Sine inverter. In this blog post, let’s […]
Teardown of a Cel-Fi Go X Cell Signal Booster
In the area where I live, the cell phone reception is spotty at the best. Even though I am only […]
Teardown of a Keithley 230 Programmable Four-Quadrant Voltage Source
The latest addition to my lab equipment is a Keithley 230 programmable voltage source which can output up to ±100V. […]
Teardown of a Piezoelectric Vibrating Gyroscope
Gyroscopes nowadays are based on micro-electro-mechanical systems (MEMS) technology. They are low cost and extremely miniaturized. A device combing both […]
Agilent U1731B LCR Meter Teardown
A couple of weeks ago, I got myself an Agilent U1731B LCR meter on eBay. These handheld LCR meters are […]
Extreme Teardown of a Panasonic PT-L780U 3LCD Projector
Have you ever wondered what is inside of a 15 year old commercial color projector? Well we will find out […]
Teardown of an MVMT Dual USB Port Wall Outlet Adapter
I bought a USB wall outlet adapter recently so that I can free up my wall outlets while charging my […]
Unusual Failure Mode of an APC Surge Protector
Recently I got hold of a dead APC SurgeArrest power strip that was about to be thrown out in my […]
Keithley 775A Programmable Counter Teardown
I just picked up a Keithley 775A programmable frequency counter from eBay. Specification-wise, this counter is very similar to the […]
Teardown of an EcoSmart 60W Dimmable G16.5 LED Bulb
Although LED light bulbs have been around for a while, I have not been able to totally replace all my […]