Welcome to Weather-Above
1PCS DC 12V Power ON Delay Timer Time Relay 1-999 Seconds
Reference Model:ASY-3D
Timing Range:1-999s
Working Power: 12VDC
Contact Capacity:250V 5A
Delay Tolerance:=0.5%
TECHNICAL SPECIFICATIONS ULTRA VIOLET FLAT WATERCLEAR 5mm LED’S
INTENSITY30--50mcd
FORWARD VOLTAGE 3.0-3.6v
FORWARD CURRENT 20m/a
DOMI WAVELENGTH 395-410nm
HOUSING WATERCLEAR
VIEWING ANGLE 120 degrees
The idea behind this project is to recycle a flat bed scanner A4 size into a uv PCB exposure box.
On the first test exposure I set the timer to 60 seconds, the image was extremely good, the second exposure test was at 50 seconds this improved the developing time, the circuit boards were already coated, the supplier I used was Maplin Electronics, the next set of tests will be using my own coated boards using positiv 20 photo sensitive lacquer.
5 Circuit boards = 127 mm X 230 mm 165 uv leds
Power input
Timer output
Power input
Timer output