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STD Automatic Op-amp night light circuit using IC-741
License: GPL 3.0
Mode: Editors' pick
- 0
Update time：
2021-04-09 23:53:30
Creation time：
2018-01-13 16:36:59
Description
We’ve watched a lot of Automatic night light switch circuits. Which I like to use a transistor as the base. But now we let to see Automatic Op-amp night light circuit using IC-741. It is also very simple. As my feelings, It has high sensitivity more than one, and with great high accuracy. Read more : [**Automatic Op-amp night light circuit using IC-741**](https://www.eleccircuit.com/automatic-light-switch-using-ic-741/)
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | CB549 | Q1 | TO-92(TO-92-3) | 1 |
| 2 | 9V...12V | RY1 | Panasonic ALQ Series Form A SPST Relay | 1 |
| 3 | 1N4001 | D4,D5,D6 | DO-35 | 3 |
| 4 | 1N4148 | D3,D2,D1 | DO-35 | 3 |
| 5 | 100K | R1,R4 | AXIAL-0.3 | 2 |
| 6 | 4.7K | R2 | AXIAL-0.3 | 1 |
| 7 | 330K | R3 | AXIAL-0.3 | 1 |
| 8 | XFMR | T1 | NONE | 1 |
| 9 | 50K | VR1 | RES-ADJ_3386P | 1 |
| 10 | LM741 | IC1 | NONE | 1 |
| 11 | 0.01uF | C1 | CAP-TAN-S2.5 | 1 |
| 12 | 1k | LDR1 | AXIAL-0.3 | 1 |
| 13 | 470uF | C2 | CAP-TAN-S2.5 | 1 |
| 14 | 3Pole connector | 220VAC | DIP | 1 |
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