kwong – Kerry D. Wong

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 […]

Full bridge rectifier (full-wave bridge rectifier, diode bridge or sometimes just simply referred to as bridge rectifier) is something that […]

A while back, I did a teardown of an 800W Reliable Electric Pure Sine inverter. In this blog post, let’s […]

Over the years, I have accumulated many used computer power bricks. Although I could just use them by themselves to […]

I did a review and teardown of an HT118A multimeter. It is a rather generic 6000 counts true RMS auto-ranging […]

I was going through some of the components I accumulated over the years and stumbled upon a Hewlett Packard YIG […]

In the area where I live, the cell phone reception is spotty at the best. Even though I am only […]

A fuse is a sacrificial device for the protection the rest of the circuit in an over-current situation. There are […]

I have been travelling quite a bit for the last year or so and have not been able to drive […]

A while back, I did a teardown on a dual-channel Amrel PPS-2322 programmable power supply, and was quite impressed by […]

The latest addition to my lab equipment is a Keithley 230 programmable voltage source which can output up to ±100V. […]

I recently picked up a downconverter box on eBay. My original plan was to use the enclosure for another project […]

Electrophoresis power supplies are commonly found in biology and other life sciences laboratories. These power supplies are usually capable of […]

I picked up a Marconi 2305 modulation meter off eBay the other day. As the name indicated, a modulation meter […]

In my previous blog posting, I did a teardown of a LogiMetrics A300/S 2 to 4 GHz Traveling Wave Tube […]