stardustsailor
Well-Known Member
.......
A dear friend,music bar owner,asked me if I could build him a led light ,to put underneath the lowest shelf of bar ,so he could have some light ,during the night-working-hours ,so to see better behind the bar and during the morning hours ,to let the lights switched on ,so to grow some fresh , green ,leafy herbs ,that he uses in the drinks / coctails ( peppermint,mint ,stevia,ect .. ) .....
5050 smd leds ,are perfect for this kind of job ....
Some strips of 5050 modules ..(working directly at 12 Volts.. ).
Parallel connected on a "bus " power line...
A power unit from an old external HDD ....Capable of delivering up to 3 A.
..
And the building of a "dimming power regulator " ,based on a LM 137 power regulator ...
.........
A flip switch sets two "working levels " ....
"LOW " setting ,activates dimming control ...(for use as a dimmed bar "working" light ..)
From totally "off " ( 0 volts ) up to "max" (~9.9 volts ) ....
"HIGH" setting ,bypasses the dimming ,providing " max " power ..
(Still through LM 137 , set at ~ 9.9 Volts max ,instead of 12 V ..
For longer operational service life ... )
A dear friend,music bar owner,asked me if I could build him a led light ,to put underneath the lowest shelf of bar ,so he could have some light ,during the night-working-hours ,so to see better behind the bar and during the morning hours ,to let the lights switched on ,so to grow some fresh , green ,leafy herbs ,that he uses in the drinks / coctails ( peppermint,mint ,stevia,ect .. ) .....
5050 smd leds ,are perfect for this kind of job ....
Some strips of 5050 modules ..(working directly at 12 Volts.. ).
Parallel connected on a "bus " power line...
A power unit from an old external HDD ....Capable of delivering up to 3 A.
..
And the building of a "dimming power regulator " ,based on a LM 137 power regulator ...
.........
A flip switch sets two "working levels " ....
"LOW " setting ,activates dimming control ...(for use as a dimmed bar "working" light ..)
From totally "off " ( 0 volts ) up to "max" (~9.9 volts ) ....
"HIGH" setting ,bypasses the dimming ,providing " max " power ..
(Still through LM 137 , set at ~ 9.9 Volts max ,instead of 12 V ..
For longer operational service life ... )