Only freelancers located in the U.S. may apply.U.S. located freelancers only
I will have two incandescent lamps of no more than 100 watts each, powered by household 120 VAC, that I would like to control in the following way. I can layout the circuit board and build it, so I'm only looking for a schematic at this point.
Operator interface will be four mechanical momentary pushbutton switches. SW1 enables lamp one adjustment. SW2 enables lamp two adjustment. SW3 increases intensity of enabled lamp. SW4 decreases intensity of enabled lamp. Intensity adjustment should be about 10 discrete steps, including off.
SW1 and SW2 must latch, in other words, I don't want to hold those switches in while adjusting the intensity of the selected lamp. Intensity selection should be nonvolatile, so that when I turn off the main power switch, and turn it on later, the lamps will be at previously selected intensities. If that requires some quiescent current, I'm OK with that.
I am looking for a mix of experience and value