Tag Archives: electronics

Teardown, Repair: Varta Power Play (Ready2Use) 15 Minute Charger (Type 57275)

There was once a time when most portable electronic devices used AA or AAA batteries. Many users would opt to use Carbon Zinc or Alkaline disposable cells with these products, which proved to be costly financially and environmentally. An alternative … Continue reading

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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

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Tech Flashback: Dick Smith’s Fun Way into Electronics Vol. 2 and 3

Continuing on from the previous part, possible due to the generosity of an OCAU member, lets continue our nostalgic trip down memory lane by looking at Dick Smith’s Fun Way into Electronics Volume 2 and 3. Dick Smith’s Fun Way … Continue reading

Posted in Electronics, Opinion, Tech Flashback | Tagged | 5 Comments

Tech Flashback: Dick Smith’s Fun Way into Electronics Vol. 1

Regular readers will no doubt already know my passion for Dick Smith’s Fun Way into Electronics series, as it was one of the big reasons for my interest and continuing self-education in electronics. This introductory series of projects were designed … Continue reading

Posted in Electronics, Opinion, Tech Flashback | Tagged | 26 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

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Project: Audio Induction Loop Receiver (Part 2: Sydney Trains DVA Collection)

In the last part, I decided to design and build myself an audio induction loop receiver. Part of this was just out of pure curiosity as to what sort of signals exist in the electromagnetic spectrum at audio frequencies, but … Continue reading

Posted in Audio, Electronics | Tagged , , | 3 Comments

Project: Audio Induction Loop Receiver (Part 1)

In daily life, you might have come across signs like this, with a picture of an ear, and the letter T on them. Maybe you didn’t think any more about them, as an average person with perfectly good hearing – … Continue reading

Posted in Audio, Electronics | Tagged , , | 9 Comments

Visited: ElectroneX 2014

ElectroneX is the premier trade show for electronics design and assembly in Australia, and is held in Sydney and Melbourne in alternating years. This year, they were back in Sydney at the Australian Technology Park at Redfern, making it easy … Continue reading

Posted in Event, Opinion, Travel, Uncategorized | Tagged , | 1 Comment

Project: Analyze Mains Power Flicker Issue & Ripple Signalling

Over the past few weeks, we had experienced a few power outages and it came to my attention that the CFL in my room might be about to go. It had a characteristic “brightness” variation which seemed to pulsate from … Continue reading

Posted in Computing, Electronics | Tagged , , , | 7 Comments

My Last DSE Kit: The Story of How I Got into Electronics

Since I’ve started the blog, the majority of my posts have always focused on the technical aspects of different products and items. But increasingly, I feel, it’s also valuable to provide a personal perspective to the posts, so I have … Continue reading

Posted in Electronics, Opinion, Tech Flashback | Tagged , , , , | 5 Comments

Teardown: Sunshine T5 S13582W 13W Ballast

Part of the whole clean-up business also means that I get rid of some of my old junk. Many years ago (2006 actually), on a holiday to Hong Kong, I purchased a set of four Sunshine branded T5 S13582W 13W … Continue reading

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

Setting off a Flashgun with an Arduino

So it might not be obvious why one might want to do such a thing – but it could come in useful. I have a Yongnuo YN560 “manual” flash (no TTL metering, so one had to set the flash power … Continue reading

Posted in Electronics, Photography | Tagged , , | 3 Comments