Very compact / pea light dimmer for demo?

[TomHoward]

Evening All

 

I am looking for some kind of very compact dimmer, that could either have multiple fitted into a small case and be attached to very small lamps, like 12V Pea Bulbs, or 240V 5W Pygmy bulbs, or a single unit with multiple DMX channels - something like a miniature Sunstrip Active, or some individually addressable pea bulbs - this is for a control system demo setup, so that we can have a miniature portable demo rig to demonstrate a focussing product with.

 

Does anybody have any suitable suggestions?

[J Pearce]

A demux and some transistors set up as amplifiers with a gain of 1.2V sounds like it would do the trick nicely.

 

Shouldn't be too hard to build, and if you built it all into a 1U box you could rack it up with a 1U showtec demux and have it a smart 2U rack bag thing. You could quite probably happily drive 50W birdies off it with a suitable power supply.

[niclights]

Something like this? 40x35W in 1U.

[TomHoward]

Thanks for those suggestions, I'm going to look into both of them. I've also found the Osram DMX 3x1 dimmer, which is three-channel PWM dimming for RGB LED use in a small transformer-sized box - I could use two of them to give 6 channels of PWM dimming to some white LEDs, which would be good enough. If I can build this into a suitcase flight case it would be ideal, so the more compact the better.