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microscope-ring-light
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PCB: Recalculate a few component values for brighter discrete white LEDs. Layout doesn't change

This commit is contained in:
Mario Hüttel 2021-05-13 16:06:19 +02:00
parent 89adf30a2c
commit 534f917636
3 changed files with 5 additions and 3 deletions
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4
pcb/WhiteLEDs.sch
View File

@ -929,9 +929,11 @@ Wire Wire Line
Text Notes 3250 2100 0 50 ~ 0
22 uH
Text Notes 2150 4650 0 50 ~ 0
Max Current = 60 mA
Max Current = 60 mA\nYou may use 27k for 88mA. This turned out to be fine.
Text Notes 850 3900 0 50 ~ 0
f = 1.08 MHz
Text Notes 1650 1850 0 50 ~ 0
For the calculation of the component values see 'lp8867-calc.py'
Text Notes 6050 2800 0 50 ~ 0
(15pF)
$EndSCHEMATC

2
pcb/lp8867-calc.py Normal file → Executable file
View File

@ -35,7 +35,7 @@ switching_freq = 1.1e6
output_voltage_nom = 24 + 0.9
inductor_value = 22e-6
input_voltage = 12
output_current_per_lane = 60e-3
output_current_per_lane = 110e-3
desired_e_series = es.E12
r1 = 560e3
r2 = 100e3

2
pcb/microscope-ring-light.sch
View File

@ -1058,7 +1058,7 @@ P 1950 1200
F 0 "SW1" H 1950 875 50 0000 C CNN
F 1 "5FS1S102M6QE " H 1950 966 50 0000 C CNN
F 2 "shimatta_switch:NINIGI-5FS1S102M6QE" H 1950 1200 50 0001 C CNN
F 3 "~" H 1950 1200 50 0001 C CNN
F 3 "https://www.tme.eu/Document/d3fdab2d1ef2b3e44d3477e847fc8839/slide_switch_5F.PDF" H 1950 1200 50 0001 C CNN
1 1950 1200
1 0 0 1
$EndComp