Hi all, I am planing on making said exposure box in the post title.
So far I have created a digital count down timer using PIC 16F690 which when reaches zero (0) will knock off power, (240v AC supply) via a solid state relay to the UV lamps.
My idea was to modify a sun lamp to incorporate the timer and relay, all of which I have at hand.
My question is 240v AC will enter the sun lamp unit and obviously the digital timer is powered by 5vdc. Could and would it be safe to use an old switching power adaptor to power the timer and relay? Would it be also wise to put a 1amp fuse on the positive side of the 240v supply before feeding the said switching power adaptor and the UV lamps? Are there any other things I need to consider to make this a safe unit?
I hope it makes sense of what I would like to do, if not I will try my best to draw it and post it up.
Best wishes
Darron
So far I have created a digital count down timer using PIC 16F690 which when reaches zero (0) will knock off power, (240v AC supply) via a solid state relay to the UV lamps.
My idea was to modify a sun lamp to incorporate the timer and relay, all of which I have at hand.
My question is 240v AC will enter the sun lamp unit and obviously the digital timer is powered by 5vdc. Could and would it be safe to use an old switching power adaptor to power the timer and relay? Would it be also wise to put a 1amp fuse on the positive side of the 240v supply before feeding the said switching power adaptor and the UV lamps? Are there any other things I need to consider to make this a safe unit?
I hope it makes sense of what I would like to do, if not I will try my best to draw it and post it up.
Best wishes
Darron