Power supply to LED G4 bulb

[Terry Sills]

Can these bulbs be driven from a normal 12 volt supply ie a 12v plug in charger?

[Maurice Leakey]

I can see no reason why not.

Here's a charger. 12watt, 12volt, 1A.
12V, 1A, 12W, Plug In Power Supply, 2.1mm Plug (farnell.com)

And here's a lamp. 3watt, 12volt @ 6000K
G4 LED Bulbs Cool White 6000K 3W Replace 10W 20W Halogen Bulbs AC/DC 12V No Flicker Non-dimmable 360° Beam Angle Energy Saving Light Bulbs for Home Lighting, 10-Pack Eco.Luma: Amazon.co.uk: Lighting

[Ken Finch]

Seems like a good replacement for the Pathe "Home Movie" and ACE machines. Unlikely to cook the notched titles? Ken Finch.

[Terry Sills]

Thanks gentlemen. Am I correct in assuming that a 12volt 6watt led bulb would draw 0.5 amps?

[Maurice Leakey]

Yes. 6 divided by 12.

[Paul Adsett]

I would think that, in any projector, the area illumination of the LED lamp would be nowhere near as bright as the 10w halogen, which has a tightly wound filament.

[Brian Fretwell]

Difficult to say. It depends on the part of the LED used. It could be more directional and a higher percentage of the light could be aimed at the condenser lens, though the example given looks a bit wasteful. A 1.2W one I bought for editor lamp replacement when my last bulb goes is more compact and quotes a 100 lumen output verses the 88 lumen for a 10W halogen.

[Janice Glesser]

I have a 12 volt power adapter hooked up to my Path Baby. I use a 6 watt LED bulb, however I can also use a 10 watt halogen. I also wired an inline on/off switch.



Here is a comparison of a halogen bulb vs. LED. I haven't tried any other LEDs. The type I show in the photo is the only one that has worked for me so far.

[Terry Sills]

Janice
thanks for those photos and interesting that the led gives a much brighter image than the halogen. Very nice Pathe Baby you have there and even complete with the projector mat - lovely 👌

[Brian Fretwell]

That is the sort of LED lamp that I have.