There were some electronics, but very little. It was a matter of tracing the two wires from the light bulb, cutting them, and connecting them to the AC power wall plug, almost.
Originally Posted by FotoRR
I say almost, because it was necessary to splice in the proper rectifier that turns the 120 volt AC power to the 83 volts that's needed by the bulb. It gets spliced into one of the two AC wires, much like splicing in a switch for a lamp.
See the following thread for more detail:
In making this alteration, one splices out the controller that's supposed to provide a consistent light source. But, this controller had clearly failed on my 45S head. (They often do.)
I added the Zone VI compensating timer sensor to this head to replace the controller. But I wonder if the light wouldn't be fairly consistent, even without compensating timer? I'm thinking that incandescent would be at least as consistent as a cold light, at least for black and white enlarging? Perhaps there's a problem with the aging, quartz-halogen light bulb, whose characteristics may change over time.
Last edited by Neil Poulsen; 03-20-2011 at 07:31 AM. Click to view previous post history.