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Do you know they used lead free solder? Military, medical and other high risk products do not have to use lead free solder. Those industries lobbied hard for that exclusion

Similarly trained 😂 PCBs on lead-free production lines are so minutely controlled that they usually work for ages unless there’s vibration, contamination or heat cycling On the other hand, large hand assembled components on boards and other assembly joints have always been a problem. Sadly...

Which bit ? Lead free solder is bad news under vibration and thermal cycling Or look under the pile of lead free at RS ?

The key to lead free soldering rework is flux. Flux in the solder wire. Gell on the board, on the component legs. Everywhere. Then it works pretty well. Leaded solder wire is still available with a range of agressive through to No clean flux cores and is ‘legal’ should you consider your...

Supposedly the standing charge increase was part my contribution for bailing out the bust providers they shouldn’t have allowed to trade. More realistically the remaining suppliers are worried that as prices rise people won’t use as much energy as they have ordered /bought for them - so expect...

Generation = spec maximum x night x cloud x part shadow x weather x sun angle x temperature x dust and bird poop x losses x they lied anyway

Are they simple DC batteries, what voltages are they ?

Thermal cameras are the best thing ever (after doughnuts)

And the switch markings and terminal locations vary too

May not have been the problem here but I’ve had cases where a TV etc is reset or updated and defaults to non-UHD input mode while the attached HDMI peripherals have (still) been set to UHD mode and their output is un-recognisable to the TV which announces no signal or just sits there. The TVs...

The meter seal fairy usually does those while they are there

The sucking out of heat normally only happens if the cylinder valve is open. It should not be if the boiler/system thinks it’s finished heating The run on is intended to ensure the heat exchanger(s) have cooled down before removing their cooling flow, the boiler doesn’t mind being full of...

Labourer told to strip it all out 'DONT CUT ANY WIRES'

Time to get someone who knows what they are doing . . .

Far-east Outdoor lights mean corrosion and poor connections, everywhere. They have lasted 10 times longer than the manufacturer expected so cut your losses and replace them

The preferred solution would be to have a smaller transformer at the start of each strip and distribute power at 230V. 5M will see a volt drop at 12V unless you use thick cable although making a ring will also help if you are doing that to avoid a 'dim end'

click the word these

Leave it safer than you found it / it was originally There are millions of houses like that and the owners are not inclined or required to rewire Locked to prevent being resurrected (again)

I think those boast about an IP65 rating but have a mains connection box that is perhaps IP44.. Perhaps if you are sure you can seal it to the wall, that it cant be knocked off its hooks and the cable exits into the wall it's possible. The important question is what the Label says. If its...

No. It says constant current driver so the constant current is the key spec and determines the led brightness Delivering that current into the LEDs requires the driver to generate a variable voltage and the driver shown will try to / be able to maintain the specified current over a 24 to...