From the sublime to the ridiculous.

DD, i think we have 38....7 of which are under the drop down bed which you dont have....we must have a budget toilet...

its fair to say, however, that we do tend to operate with the minimum of lighting turned on....especially after the evening cooking and washing up are all done.

also, all those that dim, are usually at less than full level....good job we've got two batteries...?

still, way better than all those halogens we used to have...

for example, look at the 'stack' of switches inside the door....

step, awning light and other lights...

one of our switches is 'divided' vertically, each half controlling a different set of lights in the front of the van....

each of these can be held down to change the level of lighting.

press and hold....the lights dim.

press and hold again....the lights get brighter..

just let go the switch when at the required level...

great fun when on site....

im guessing that they do.....?

They use PWM ( Pulse Width Modulation ) all that means is they switch the power on and off very quickly. The brighter you set them the more ON they have. As you turn them down they have less ON. Your eyesight does not see it as it's very quick. Circuit will use some power but LED's will use less.

Some of the new Cree LED's are down in the mA range so use far less power.

Our MH has touch control lights. Touch them once and they come on a nice blue colour touch them again and they turn white. We also have a large number of LED Lights

They use PWM ( Pulse Width Modulation ) all that means is they switch the power on and off very quickly. The brighter you set them the more ON they have. As you turn them down they have less ON. Your eyesight does not see it as it's very quick. Circuit will use some power but LED's will use less.

Some of the new Cree LED's are down in the mA range so use far less power.

Our MH has touch control lights. Touch them once and they come on a nice blue colour touch them again and they turn white. We also have a large number of LED Lights

....does this mean that they are, in effect, stroboscopic?

...in that they 'flash'?

i was thinking about how the BBC (et al) have to give a disclimer on pretty well every news item, should MH manufacturers be doing the same?....

"warning, do not use this MH in low light mode....."

Yep they FLASH but you cannot see it because as the light dims it is switched on again. We are talking micro seconds. Far to quick for the eye to see

So to dim the bulb they decrease the time it is ON. They don't increase the time it's OFF. If you did that you would see it flashing.

So one cycle is say 10ms  .. 1ms ON and 9ms OFF will be dim but 8ms ON and 1ms OFF will be bright.