Posts Tagged ‘LED bulbs’

@TheGreenParty recycling dry cell batteries

May 12, 2017

Most people buy dry cell batteries for a specific device and then chuck them when they begin to fail.

I’d like to suggest a little experimentation, using a multimeter.

These devices are quite cheap nowadays and my digital version was about £6.

The graph shows how the voltage of these batteries drops with use.  Basically the central carbon electrode gets blocked off by gases and effectively insulated.

If this problem didn’t exist then the batteries would work at maximum voltage until all the Zinc casing was eaten away but it doesn’t. This is why they’re recyclable.

This graph shows a typical voltage characteristic for a battery, although most can be 1.6 volts when new and some can last longer than the average. In my opinion the cost of the better ones is usually too high and it’s more efficient to buy two average ones.

What I noticed was that my wifi mouse ate up batteries but the batteries still registered about 1.45 Volts on my multimeter. Placed in my wifi headphones they began to give problems whilst reading about 1.35 Volts. Transferred to my wife’s “candles” they worked well until about 1.2 Volts, when only the red LED was giving light. These would still work the remote controls for some considerable time until the Volts dropped to about 1.1 volts.

These figures aren’t rigorously proven but merely serve to give an idea of how to minimise cost and waste.

It’s worth checking out your own needs, if you’re as penny-pinching as me.


LED light bulbs

November 6, 2011

I really don’t like these Euro bulbs. They’re ineffective and dangerous, in more ways than one.

Somebody’s got shares in this pseudo-Green scam and I resent being made to use them instead of the safer incandescent light bulb.

If this was really a Green issue then it’d be the LED bulbs that were being promoted and subsidised.

If you’ve got an LED torch, you’ll notice that they are cold, suggesting that they are even more efficient than the Euro backed bulbs.

They don’t contain Mercury and shouldn’t start burning, as one of my Euro bulbs did.

They are bright from the moment that they are switched on. They are self regulating, so there’s no power surge and they can be used with a dimmer switch.

Unfortunately, because they are not widely used, the only ones available are quite expensive (around the £10 mark) but if they were promoted as much as the Verdamt Euro Bulbs, the price would drop quickly enough, as the Chinese and Indians would churn them out (probably for a few pence each, before shipping etc.).

I look forward to seeing them in the pound shops.