In a previous post, I did a teardown of a NanoVNA-F V2. This time let’s take a look at a LiteVNA vector network analyzer. One of the key differences between the LiteVNA and the NanoVNA-F V2 is that LiteVNA has…
HDS2102S is the latest version in OWON’s HDS200 series 3-in-1 handheld oscilloscope. It combines a digital oscilloscope, a digital multimeter and an arbitrary waveform generator all in a compact package. I did a thorough review of an HDS272S a little…
A while back I built a spot welder with an old microwave oven transformer (MOT). Since then, I have used it in many of my projects including using it to make a battery bank. While that spot welder does an…
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 HDS200 series. It competes directly against Hantek’s 2000 series’ 2D72 which I did a teardown of not too long ago. I…
In this blog post, let’s take a look at a cross-polarized dual band MIMO Panel antenna that is designed for cellular signal booster. It can also be used with hotspots and routers within the designated frequency bands.
About a year ago, I bought a Cel-Fi Go X signal booster for my house as where I live the signal reception is very poor. I managed to do a quick teardown and examined the top side of the circuit…
UNI-T‘s UT61E+ is a 22,000 count true RMS multimeter. It was released towards the end of last year and is the replacement for the out-going UT61E. I did a detailed review and teardown of this multimeter and you can check…
A while back, I did a teardown of an 800W Reliable Electric Pure Sine inverter. In this blog post, let’s take a look at a CNSWIPower 1500W pure sine inverter from Xijiatec.
In the area where I live, the cell phone reception is spotty at the best. Even though I am only a couple of miles from a nearest tower, I barely get any cell signal at all let along usable 4G…
The latest addition to my lab equipment is a Keithley 230 programmable voltage source which can output up to ±100V. Unlike many of the power supplies and voltage sources I have, the Keithley 230 is capable of operating in all…
Gyroscopes nowadays are based on micro-electro-mechanical systems (MEMS) technology. They are low cost and extremely miniaturized. A device combing both a three-axis gyroscope and a three-axis accelerometers (sometimes these devices are referred to as 6DOF devices) such as the MPU-6500…
A couple of weeks ago, I got myself an Agilent U1731B LCR meter on eBay. These handheld LCR meters are quite expensive when new, but can be found on eBay for a fraction of the original price. Dave Jones at…
Have you ever wondered what is inside of a 15 year old commercial color projector? Well we will find out in this post today. As usual, a video of this teardown is included towards the end of the post.
I bought a USB wall outlet adapter recently so that I can free up my wall outlets while charging my phones and tablets. Of course, before putting it into use, I wanted to open it up to take a peak…
Recently I got hold of a dead APC SurgeArrest power strip that was about to be thrown out in my office. The power strip simply doesn’t provide power to any of its outlets regardless of the power switch position. Since…