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STD 3s_Li-Ion_Voltage_Indicator_v1
License: Public Domain
Mode: Editors' pick
- 0
Update time：
2024-01-30 12:07:01
Creation time：
2021-01-07 08:33:44
Description
3s Li-Ion Battery Voltage Indicator
Based on LM3914N LED indicator IC
This project is using 5 LEDs instead of full 10pcs. Once you have calibrated the resistance value with a potentiometer, then you can remove it, measure it and place the measured resistance into "R_FIXED" axial resistor pads.
The PCB is fitted with 375mA fuse in case something becomes shorted. Also switch can be placed to the terminal block to take a measurement when you have connected this PCB to a battery with 2-pin JST connector.
REVISION: 1.0
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 10uF | C10 | CAP-TH_BD5.0-P2.00-D0.8-FD | 1 |
| 2 | 22K | R1 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 3 | 330nF | C2 | CAP-TH-P5.08 | 1 |
| 4 | 333-2UYD/S530-A3 | LED2,LED3 | LED-TH_BD5.0-P2.54-FD | 2 |
| 5 | 1N4007B | D1 | DO-41_BD2.4-L4.7-P8.70-D0.9-FD | 1 |
| 6 | TJ-L5FYTGHRMFCSFLC2R-A5 | LED1 | LED-TH_BD5.8-P2.54-FD | 1 |
| 7 | 3.9K | R2 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 8 | 10 | R3 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 9 | 375mA | F1 | FUSE-TH_BD3.0-L7.2-P11.20-D0.6 | 1 |
| 10 | 18K | R5 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 11 | TJ-L5FYTGHKMCGLFLC7K-A5 | LED4,LED5 | LED-TH_BD5.8-P2.54-FD | 2 |
| 12 | 1K | R4 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 13 | 1K | POT | RES-ADJ-TH_3362P | 1 |
| 14 | 100nF | C1 | CAP-TH-P2.54 | 1 |
| 15 | PH-2AW RHOS | POWER | CONN-TH_2P-P2.00_PH-2AW | 1 |
| 16 | LM3914N | U1 | DIP-18_L23.0-W6.5-P2.54-LS7.6-BL | 1 |
| 17 | CONN-TH_2P-P5.08 | SWITCH | CONN-TH_2P-P5.08 | 1 |
| 18 | 1.3K | R6 | RES-TH_BD2.2-L6.5-P10.50-D0.6 | 1 |
| 19 | R | R_FIXED | R_AXIAL-0.4 | 1 |
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