Vlad's Gadgets

What will he buy next?

Flashing Telephone Ringer Lets You Silently Know When Someone is Calling

A flashing telephone ringer, also called a telephone strobe light, phone strobe flasher or silent telephone ringer, is a small device that you connect to your landline telephone socket. When…

Flashing Telephone Ringer Lets You Silently Know When Someone is Calling
Mrs Pegg's Handy Line – A Portable Folding Clothes Hanger That Doesn't Rust

Mrs Peggs Handy Line is a sturdy, yet light and portable clothes line. It is made from strong corrosion resistant materials, so it can be left outside permanently and not…

Mrs Pegg’s Handy Line – A Portable Folding Clothes Hanger That Doesn’t Rust
Connect your PC to your TV with the VGA to Video Signal Converter Box

The VGA to TV converter lets you connect the VGA output of your PC/Laptop to any CRT TV, LCD TV, Plasma TV or VCR via the composite video input or…

Connect your PC to your TV with the VGA to Video Signal Converter Box
Happy Birthday Vlad!

Happy Birthday to Vlad, who turned 31 last Sunday.

His birthday was celebrated amongst many friends, electronic synth-pop music, kava, drink, platters of food, caramel mud cake and lots of gadgets…

Brief Blogs for Week Ending 2012-07-05

Own an Amazon Kindle? This site has a changing list of 100 eBooks available for free at any time: http://t.co/V8pIZBEl ->

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12 Channel Smart AA, AAA and 9V Battery Charger with Discharge Function

Written by Vlad on March 19, 2011 – 10:12 pm - 3,869 views

Smart battery charger with discharge function, loaded with 8 AA NiMH batteries

This is a microprocessor-controlled battery charger that can charge up to 10 x AA/AAA batteries and 2 x 9V batteries. It supports both NiCad (Nickel-Cadmium) and NiMH (Nickel-Metal Hydride) simultaneously. Each battery is independently monitored and charged, and a multi-colour LED above each battery indicates the charging status.

There is a discharge function that drains all the batteries completely before commencing a charging cycle, which is useful for rectifying “memory effects” and other common battery problems. It employs several mechanisms to ensure that batteries are completely charged, but not overcharged.

It comes with both a 12V DC power adapter that operates worldwide on mains voltages between 100-240V as well as a lead that plugs into a car cigarette lighter socket so you can charge batteries when you’re on the road.

I purchased this from Jaycar electronics, who call it 12VDC & 240VAC Smart Battery Charger Ni-Cd & Ni-MH. I have seen similar smart chargers on eBay, but most are 10-channel chargers with support for only AA and AAA batteries.

Why I bought the Smart AA & AAA battery charger

(more…)


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