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- Aug 14, 2013
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I've been having some fun with a projector the last couple days. It's been a bit of a learning
experience and I thought I'd share a bit with everyone.
The DLP itself was fairly uninteresting to me.
There are some interesting optics inside with 2 large dichroic mirrors.
The "Coretronic" LED/laser driver board has some high power SMT MOSFETs and large
inductors on it.
All of the power to the LDs goes through this flimsy looking flex cable.
Here they are with the lenses still on.
The 16 9mm diodes are connected as 2 banks of 8 in series. That means each of the 2 driver
channels has to put out around 32V. There are also 2 reverse protection diodes.
And here they are. It's going to be tricky pressing them out through those oval shaped holes.
After everything was removed from the case, it was all connected on the floor for testing.
Another PT54 was substituted for the red since the original one came off the heatsink during
removal.
Surprisingly, it actually runs like this.
The Canon was confused by all the light output, but the iPad didn't seem to mind.
The blue LED was seriously washing out most of the picture. If the red one didn't have its
lens, it probably would be doing the same.
Putting a hand in front of the diodes it feels very warm. You can probably tell which one is
going to be put to work.
experience and I thought I'd share a bit with everyone.
The DLP itself was fairly uninteresting to me.
There are some interesting optics inside with 2 large dichroic mirrors.
The "Coretronic" LED/laser driver board has some high power SMT MOSFETs and large
inductors on it.
All of the power to the LDs goes through this flimsy looking flex cable.
Here they are with the lenses still on.
The 16 9mm diodes are connected as 2 banks of 8 in series. That means each of the 2 driver
channels has to put out around 32V. There are also 2 reverse protection diodes.
And here they are. It's going to be tricky pressing them out through those oval shaped holes.
After everything was removed from the case, it was all connected on the floor for testing.
Another PT54 was substituted for the red since the original one came off the heatsink during
removal.
Surprisingly, it actually runs like this.
The Canon was confused by all the light output, but the iPad didn't seem to mind.
The blue LED was seriously washing out most of the picture. If the red one didn't have its
lens, it probably would be doing the same.
Putting a hand in front of the diodes it feels very warm. You can probably tell which one is
going to be put to work.
