OngoingSuper Simple Light detector
STDSuper Simple Light detector
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：Creation time:2020-11-05 09:07:27Update time:2020-11-05 10:02:47
Description
A simple light detetctor / nightlight circuit.
PCB layout fits on one side
BOM
|Description|Value|Designator|QTY.|Part number|
|-|-|-|
|Resistor|200r|R1,R2|2|C433755|
|Resistor|47k|R3|1|C433715|
|Light Dependant Resistor| |R4|1| |
|Transistor|2N3904|Q1|1|2N3904TA|
|LED|5mm LED|U1,U2|2| |
No power solution is included in the BOM. A coin cell is enough to power the circuit.
Design Drawing
schematic diagram
Preview
Sheet_1Open in Editor
PCB
Preview
light detcetor v2Open in Editor
BOM
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | A9050 | R4 | RESISTOR_LDR_5X4.1_RM3 | 1 |
| 2 | 47K | R3 | RES-TH_BD2.4-L6.3-P10.30-D0.6 | 1 |
| 3 | 200 | R1,R2 | RES-TH_BD2.4-L6.3-P10.30-D0.6 | 2 |
| 4 | 2N3904TA | Q1 | TO-92-3_L4.9-W3.7-P2.54-L | 1 |
| 5 | 5mm LED | U1,U2 | 5MM LED | 2 |
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