Tag Archives: test equipment

Great AA Alkaline Battery Test – Addendum: 25mA Constant Current Tests

For those following along, they’d probably realize by now that I have left the country and are officially on holiday in the slightly-warmer-than-average-for-this-time-of-year Hong Kong. I had originally planned to make this post before I left home, but things got … Continue reading

Posted in Electronics | Tagged , , , , , , , , , | Leave a comment

Salvage Season: Pt 5 – Fisher-Rosemount Systems Model 275 HART Communicator

“All this gear … and I still can’t get to your heart.” Welcome back to the salvage season series of posts. Lame joke aside, this post will be about a Fisher-Rosemount Systems Model 275 HART Communicator. So … what is … Continue reading

Posted in Electronics, Salvage | Tagged , , , , , , | Leave a comment

Great AA Alkaline Battery Test – Pt 4: Cell Physical Characteristics

After the rather interesting results in the previous section, I was curious as to who actually manufactured the cells for the lesser known brands, and whether that could be determined just by examining the physical characteristics of the cells. Given … Continue reading

Posted in Electronics | Tagged , , , , , , , , , | 2 Comments

Great AA Alkaline Battery Test – Pt 3: The Results

If you’ve made it this far, congratulations, you’ve earned the right to read the results! If not, you could be doing yourself a big disservice and not understanding the true intricacies that underlie the subject of battery testing and the … Continue reading

Posted in Electronics | Tagged , , , , , , , , , | Leave a comment

Great AA Alkaline Battery Test – Pt 2: The Contenders

Welcome to the second installment in the Great AA Alkaline Battery Test series, where the contenders for testing are presented. This post is one of the most image heavy posts I have ever delivered, so apologies if my webserver falls … Continue reading

Posted in Electronics | Tagged , , , , , , , , , | Leave a comment

Great AA Alkaline Battery Test – Pt 1: Battery Testing Fundamentals

Regular readers would probably know that I have a love of batteries, and their associated test equipment. Maybe it was the fact that they were expensive, but pervasive, and my enjoyment as a child relied quite heavily on batteries to … Continue reading

Posted in Electronics | Tagged , , , , , , , , , | Leave a comment

RoadTest Review: B&K Precision Model 8600 DC Electronic Load

It’s a rather late night for me – as it has been for the past few weeks. But that’s not without reason, as a rather useful piece of equipment headed my way and my review was due. I had a … Continue reading

Posted in Electronics | Tagged , , , , | Leave a comment

Review, Teardown: “Generic” BT-168 Battery Tester

A short while back, I posted about this generic battery tester, which was a cheap and nasty clone of a model which was quite popular, which I used frequently as a child. In my quest to buy it, I came … Continue reading

Posted in Electronics | Tagged , , , , , , , , | Leave a comment

Weekend Probing Pt. 2: Keweisi KWS-V20 USB Tester IC Connections

What started off as a little exploration led me deeper to try and better understand what was going on with the Keweisi KWS-V20 USB Tester. Even though I don’t have any specialist bus sniffing gear, I decided to just wing … Continue reading

Posted in Electronics | Tagged , , | 5 Comments

Weekend Probing: Keweisi KWS-V20 USB Tester IC Connections

After doing a quick review and test of the Keweisi KWS-V20 USB tester, the whole issue of the unknown microcontroller IC, the EEPROM which holds the accumulated charge and the LCD display really bugged me. I thought of the possibility … Continue reading

Posted in Electronics | Tagged , , | 2 Comments

Review, Teardown: Keweisi KWS-V20 USB Tester

It’s almost been one year since I’ve looked at “USB charger doctor” style devices, but having reverse engineered, tested and modified one, I didn’t think I’d ever bother with them again. That was, until I saw the Keweisi KWS-V20 USB … Continue reading

Posted in Electronics, Tablet | Tagged , , , , , , , , , | 5 Comments

Modification: Manson HCS-3102 Power Supply Output On/Off Switch

Three years ago, I purchased a pair of Manson HCS-3102 programmable switch-mode power supplies. These were not particularly expensive supplies, and judging by some of the noises they made and the granularity of the programming and read-back, weren’t particularly high … Continue reading

Posted in Electronics | Tagged , , , , , , , | 4 Comments

RoadTest Review: Keysight Technologies E36103A Power Supply

If you think all I have been doing is blogging about my holiday and LED lighting … the truth is that there’s a lot more going on behind the scenes. I was fortunate enough to be selected by element14 for … Continue reading

Posted in Computing, Electronics | Tagged , , , , , | Leave a comment

Teardown, Accuracy Testing: LP7663 Kill-a-Watt-clone Power Usage Meter

Sometimes when I mention an idea, I will quickly become fixated on it and try to flesh it out as best as I can. Just yesterday, I was mentioning about how low-cost power usage meters can mislead, and today, I’m … Continue reading

Posted in Electronics | Tagged , , , , | 2 Comments

Teardown: A Failed Efergy Elite (Classic) 1.0 Energy Monitor

As part of a push to drive the home’s electricity consumption down and better understand how energy was being utilized, I installed a clamp-style wireless energy monitor from Efergy in the house. Operating over 433Mhz, the transmissions were also useful … Continue reading

Posted in Electronics | Tagged , , , | Leave a comment

Standby/No-Load Power Consumption: Are we doing it right?

The issue of energy efficiency has always been an issue with electrical appliances. With increasing adoption of ever-cheaper appliances, energy rating labelling initiatives and minimum energy performance standards (MEPS) for a range of products have been put into place to … Continue reading

Posted in Electronics, Opinion | Tagged , , | Leave a comment

Modified: USB Charger Doctor as USB Current Shunt

A while back, I had purchased and completely tore down some USB Charger Doctors. While they didn’t seem very modifiable at the time, I came across a need which could easily be fulfilled should I choose to modify one of … Continue reading

Posted in Electronics | Tagged , | 2 Comments

Friday 13th November 2015: The Night the Power Went Out

Friday the 13th, commonly known as Black Friday, is believed to bring bad luck. While I’m not a superstitious person, and I don’t believe in a fear of the number 13, it seems that something was special about this Friday. … Continue reading

Posted in Electronics | Tagged , , , , , , | 5 Comments

Review: Agilent U1241B 4-Digit Handheld DMM & Accessories

Early in December, I made a trip to element14 to treat myself to an early Christmas present. Having posted about it on my element14 blog, inviting members to take a guess at what the surprise would be, I was surprised … Continue reading

Posted in Electronics | Tagged , , , , , , | Leave a comment

Investigation: How Accurate is that 3.5 digit Multimeter?

A few weeks ago, one of the commenters made a suggestion that I test some more inexpensive test equipment, after my stint at reverse engineering USB charger doctors/detectors and determining their accuracy. While I won’t go chasing low end test … Continue reading

Posted in Electronics | Tagged , , , | 2 Comments

Testing: Charger Doctor and USB Detector Accuracy

Ever since I got my Charger Doctors/USB detector, I have been fascinated with how they have been able to provide such a useful tool for a low price. After taking each of them apart and analyzing their circuitry and connections, … Continue reading

Posted in Electronics | Tagged , , , , | 6 Comments

Reverse Engineering: The KW203 USB Detector

Since I decided to take apart the other USB Charger Doctor unit to determine how it worked, my curiosity could only be satisfied if I took apart this unit as well. Out of the two units, this was the pricier, … Continue reading

Posted in Electronics | Tagged , , , , , , | 8 Comments

Reverse Engineering: The USB Charger Doctor

In my last post, I had a good look at the features of two different USB charger doctors, and went through a quick teardown. It was fascinating, especially for the blue unit, that they could make and supply such a … Continue reading

Posted in Electronics | Tagged , , , , , | 11 Comments

Review, Teardown: Two Popular USB Charger Doctor/Detector/Current Meters

There seem to be many circumstances where checking the current and voltage to a USB device could come in very handy. For example, maybe you are troubleshooting a slow charging device – maybe it’s cable related and the voltage is … Continue reading

Posted in Electronics, Tablet | Tagged , , , , , , | 17 Comments

Quick Review: Tenma Insulation Resistance Tester 72-9400

After my stint at ElectroneX 2014 on behalf of element14, I was rewarded with a gift voucher to spend with them. That’s not a problem, as there’s always something to buy. In the spirit of a bargain-hunting uni student, I … Continue reading

Posted in Electronics | Tagged , , | 4 Comments

RoadTest Review: Tektronix PA1000 Power Analyzer

A big thanks to element14 and Tektronix, as always, for sending me this gem for review. It’s been a long four months since I’ve received the Tektronix PA1000 for review, and due to a rather extraordinary set of circumstances, what … Continue reading

Posted in Electronics | Tagged , , , , | 1 Comment

ADSL2+ Woes: What’s in a Training Signal?

Visitors who have explored the site quite a bit will probably know that I’ve got a bit of a thing for modems – specifically, the sound and behaviour of different dial-up modems. The sound of the modem handshake, formally known … Continue reading

Posted in Computing, Telecommunications | Tagged , , , | 2 Comments

Quick Review: Agilent Technologies U1733C Handheld LCR Meter

As a result of me giving a webinar about Getting Started with Raspberry Pi and Accessories for element14, I was rewarded with a gift voucher which allowed me to purchase some much-desired equipment from element14. I decided that it would … Continue reading

Posted in Electronics | Tagged , | Leave a comment

RoadTest: Pico Technology PicoScope 2205A

It’s been a little while since my last post – one of the reasons was feeling somewhat unwell, but another reason was that I’ve been putting a mammoth effort into reviewing the Pico Technology PicoScope 2205A – a budget 25Mhz … Continue reading

Posted in Electronics | Tagged , , , | 8 Comments

Review: TBS TBS6925 PCI-e Professional Satellite Tuner Card

It’s been a very long time in the making – prior to purchasing this card in 2011, TBS had been in contact with me as I was helping them with some bug-fixing for a different model of card, and they … Continue reading

Posted in Opinion, Satellite | Tagged , , , | 3 Comments