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STD Intermittent Battery Float Charger III
License: Public Domain
Mode: Editors' pick
- 1
Update time：
2021-04-01 18:37:00
Creation time：
2018-12-31 18:37:02
Description
Using just one multi-stage battery charger to maintain, or Float up to 6 12V Lead-Acid, Gel-Cell batteries.
The circuit can be expanded to maintain as many as 10 batteries, and with additional CD4017 IC's can be made to float many many more. The more batteries added will ultimately reduce the efficiency quality of the float charge.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | CD4017BE | U1 | DIP-16 | 1 |
| 2 | NE555P | U2 | DIP-8 | 1 |
| 3 | 2N7000 | Q1,Q2,Q3,Q4,Q5,Q6 | TO-92(TO-92-3)-2.54 | 6 |
| 4 | 12V LEADACID | V1,V2,V3,V4,V5,V6 | NONE | 6 |
| 5 | 0.01uF | C1 | RAD-0.1 | 1 |
| 6 | 440uF | C2 | RAD-0.1 | 1 |
| 7 | 2.0M | RHA | AXIAL-0.3 | 1 |
| 8 | 180 | R3,R4,R5,R6,R7,R8 | AXIAL-0.3 | 6 |
| 9 | 3mm | LED1,LED2,LED3,LED4,LED5,LED6 | LED-3MM/2.54 | 6 |
| 10 | 4.1M | RHB | AXIAL-0.3 | 1 |
| 11 | 8.2M | RHC | AXIAL-0.3 | 1 |
| 12 | NO | TP5,TP2,TP3,TP4,TP6,TP7,TP8,TP9,TP10,TP12,TP13,TP14,TP15,TP16,TP17,TP18,TP1,TP19,TP24,TP25,TP26,TP27,TP28,TP29,TP30,TP11,TP21,TP37,TP38,TP39,TP40,TP20,TP23,TP31,TP32,TP33,TP34 | TP_4545 | 37 |
| 13 | 2k | RL | AXIAL-0.3 | 1 |
| 14 | LM317T | U3 | TO-220(TO-220-3) | 1 |
| 15 | 0.1uF | C3 | RAD-0.3 | 1 |
| 16 | 1uF | C4 | RAD-0.3 | 1 |
| 17 | 392 | R9 | AXIAL-0.3 | 1 |
| 18 | 240 | R10 | AXIAL-0.3 | 1 |
| 19 | 3mm(If-15mA, Vf 2.0V) | LED7 | LED-3MM/2.54 | 1 |
| 20 | 1.8k | R11 | AXIAL-0.3 | 1 |
| 21 | 4.0 Ohm 1W(300mA) | R13 | AXIAL-0.3 | 1 |
| 22 | 6.2 Ohm 1W(200mA) | R14 | AXIAL-0.3 | 1 |
| 23 | 12.4 Ohm 1W | R15 | AXIAL-0.3 | 1 |
| 24 | 1k 1W | R1,R2,R18,R12,R16,R17 | AXIAL-0.3 | 6 |
| 25 | 2A | F1 | FUSE-1.0X1.9 | 1 |
| 26 | 0.1uF | C5 | RAD-0.1 | 1 |
| 27 | 1N4148 | D1,D2 | DO-35 | 2 |
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