That's what I did. As designed, the circuit board regulates the light output of the quartz halogen bulb. For mine, it runs only the fan. (Over-design.
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But to wire it directly to AC requires a rectifier of the proper size that can handle the amperage. The rectifier is spliced (in the correct direction) into one of the two wires leading to AC current. It has the effect of reducing the voltage from 110 volts to 83 volts. It probably also effectively makes the current DC. (That's what rectifiers do.)
I have a Zone VI compensating developing timer with extra sensors. So, I was also able to place the sensor in the path of light from the QH bulb reflected off a piece of aluminum.
It all works great together. I use my 45s for printing black and white negatives up to 4x5. If you're interested in specifics, we could communicate through the messaging system.
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