And There Was Light

[JOEPRO]

Great job makes some difference! I had a LED better laying around this months I put it above my workbench yesterday and it is a game changer

 

[Turbo]

just wondering when converting from fluorescents strips to LED if there is an issue with strobing when operating machine tools.

I've got one of these above my lathe & there's no strobing. You normally only get strobing with an ac driven light, led's are generally dc. Though I have an led head torch that caused strobing on machine tools & it's dc battery powered!

 

[500e]

You can paint over the dung.
Excuses don't wash here
PS
May need 2 coats

 

[Turbo]

You can paint over the dung.
Excuses don't wash here

I'm considering fitting a sheet of white plastic behind the bench, might do it when I replace the planks on top of the bench. How long it stays white - that's another matter!

 

[Erie Fred]

13 hp powerwasher with a rotary nozzle would probable do the trick.

 

[Turbo]

13 hp powerwasher with a rotary nozzle would probable do the trick.

Too late now, too many tools, cupboards & gear to move plus the electric consumer unit is in the brown cupboard at the rh end of the bench!

 

[Erie Fred]

Too late now, too many tools, cupboards & gear to move plus the electric consumer unit is in the brown cupboard at the rh end of the bench!

Ah well.....We'll just have to monitor you postings to see if there is any effects from MVOC's.

 

[jack-daniels]

I've got one of these above my lathe & there's no strobing. You normally only get strobing with an ac driven light, led's are generally dc. Though I have an led head torch that caused strobing on machine tools & it's dc battery powered!

It's caused by Pulse Width Modulation chopping up the DC. to control the brightness.

"PWM is a very common method of dimming LED lights that works by very rapidly turning them on and off (pulsing) for periods that visually appear as a steady dimmed light. We adjust the brightness level by adjusting the percentage of the time the lights are on (100%) to the time they are off (0%)."

 

[Turbo]

It's caused by Pulse Width Modulation chopping up the DC. to control the brightness.

"PWM is a very common method of dimming LED lights that works by very rapidly turning them on and off (pulsing) for periods that visually appear as a steady dimmed light. We adjust the brightness level by adjusting the percentage of the time the lights are on (100%) to the time they are off (0%)."

You learn something new every day!

The battens run at full chat so there will be no PWM but the head torch is dimmable so it will have PWM applied.

 

[jack-daniels]

You learn something new every day!

The battens run at full chat so there will be no PWM but the head torch is dimmable so it will have PWM applied.

The DC will still be chopped up unfortunately as the power supply will be of the "Switching" type rather than an old fashioned linear transformer.

"In switching power supply designs, the input voltage is no longer reduced; instead, it's rectified and filtered at the input. Then the voltage goes through a chopper, which converts it into a high-frequency pulse train. Before the voltage reaches the output, it's filtered and rectified once again."

 

[graffian]

Maxwell said:

And there was light.

 

[fizzy]

I find there is no very little difference in light output between an LED one and a normal tube the lumens are about the same watt for watt. It is amazing the difference a new tube makes - especially if you clean the diffuser - or better still remove it.
The LED ones are much easier to install though - especially when you daisy chain them.

 

[Turbo]

Maxwell said:

And there was light.

That's made my head hurt!

 

[MattF]

Maxwell said:

And there was light.

Easier to just flick the light switch.