Electron microscope lithium cell.

Interesting powerbank :)

Don’t :)

Phil Collins

Yeah, so only "Clive blew his annual tool" was visible on my screen at first. I'll grow up one day

He had one, but he took it to bits to see how it worked... ;)

Daddy Bearcat

The Philips lamps do tend to contain a lot more sophisticated circuitry to allow them to be dimmed on a conventional dimmer.

Big Clive

I've a Philips vintage-style dimmable 7W LED filament bulb in a table lamp, plugged in a separate socket dimmer. This bulb surprisingly dims all the way down to a candlelight glow without any stroboscopic flicker when waving my hand. I suspect it has a smoothing capacitor on the output - When I switch on the bulb with the dimmer on low, the brightness ramps over a split second like a dimmed tungsten lamp. The only minor issue is that the colour temperature does not get as orange as a tungsten lamp gets.

Seán Byrne

Clive blew his annual tool budget on the X-Ray machine.

Howard Simons

Thank you!

The dimmable lamps are often unsmoothed so they can flicker when used either on a dimmer or plain switch. I prefer non dimmable lamps as you can find versions that don't have visible flicker at all.

Big Clive

Hi Clive, I have a totally unrelated question I hope you would like to answer. I know dimming those dimmable LED lamps isn't an ideal situation. But is the design of the dimmable lamps different in a way which makes it preferable to choose a non dimmable lamp if you are using the lamp at full brightness anyway?

Clive doesn't own an electron microscope, shock horror! If they're still the huge beasts I used to work on back in the 80's he probably doesn't have the space. Or the power. Or the dry nitrogen feed for back filling

Phil Collins

Family first. Always.

09Klr650

If you measure resistance like that it's going to be affected by all the components and give a fairly random value. You can't really determine the voltage a PCB is designed to operate at by measuring the resistance.

Big Clive

We told our parents we would never put them in a care home and have kept our word.

Big Clive

I really like that image! Without the cross-hairs it would be frame-worthy (perhaps with a notation explaining its origin) Clive the insight you bring is (as usual) invaluable! I get to use an x-ray, but would KILL for the chance to be able to wield an electron microscope! Hoho the things I would see!

Michael Thompson

This. Anyone who truly cares understands. When my mother was in decline due to cancer my brother was able to be a hero by being available to help care for her. You, Clive are a hero too. :)

Michael Thompson

No apologies necessary. Best wishes to you and yours.

Jeremy Impson

Okay..kinda what I am assumed. So when I test a PCB and I can measure resistance between the + and - contacts on the board, how do I know what level of Power is safe to run through that board? In this case, the resistance measures at 346.78 k.

Todd Swain

If you're measuring resistance then you are measuring continuity. But on a meter the continuity test is only intended to find very low resistance circuits.

Big Clive

Never ever apologize for not making videos while taking care of your mom. She is a heck of a lot more important than we are. With that being said, I do hope she is doing well.

Chris Muncy

I have a stupid human question for you... Why can I measure the resistance in a object but I can't measure continuity. Take for example my skin. I can not achieve continuity by touching both probes to my skin yet I can measure resistance. How can the meter detect resistance if it can't see both leads and if it can see both leads, why can't it detect continuity? I have a guess but it's really just a swag. Thanks!

Todd Swain

I'd go and stay with my Mum more often if she had a scanning electron microscope to play with!

Well done, Ross.

Rob Clark

Thats really interesting!

Orkekum