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…
Recently, I got my hands on a NanoVNA-F V2 made by SYSJOINT. It features a large 4.3 inch touch screen and compared to other NanoVNAs of similar specs (50 kHz – 3 GHz), this one appears to be very well…
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…
HoldPeak’s HP-770D is a 40,000 counts true RMS multimeter. Price and size-wise it is very similar to UNI-T’s new UT61E+ I reviewed a while ago. Although HoldPeak is not as well known as UNI-T, this meter does offer some advantages…
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…
The DSO2000 series is the latest entry-level digital storage oscilloscope from Hantek. The DSO2D10 version I reviewed (see video linked below) is a dual-channel 100MHz, 1GSa/s 8M sample memory depth scope that sports protocol decoding capability and a single channel…
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…
Hantek‘s 2D72 (and 2D42) is the latest handheld oscilloscope in the 2000 series that combines an oscilloscope, a multimeter and an arbitrary waveform generator all inside a single device that is not much bigger than a full sized DMM. I…
I just received a Topshak LW-3010EC programmable power supply. Like many cheap lab power supplies out there, this is yet another re-branded power supply that uses the main power supply board designed by Longwei. In this blog post, I will…
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…
Full bridge rectifier (full-wave bridge rectifier, diode bridge or sometimes just simply referred to as bridge rectifier) is something that everyone learning electronics is familiar with and the operating principle is also well understood. But if we could clearly demonstrate…
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.
Over the years, I have accumulated many used computer power bricks. Although I could just use them by themselves to power other electronics with similar voltage and current requirements, I thought I would combine a few of them together as…
I was going through some of the components I accumulated over the years and stumbled upon a Hewlett Packard YIG tuned oscillator (part number 5086-7023) that I bought a while back. This YIG oscillator was made for a frequency extension…