License

Public Domain

Recommend Projects

LED Dimmer

1 year ago 682
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

555 timer based PWM LED dimmer
This project uses PWM to turn on and off a LED (or a strip of them) really fast and changes the duty cycle (Fig.1) so that the human brain perceive it as the dimming of the LED(s). This means that the MOSFET doesn’t have to drop large amount of voltage, this makes the device very energy efficient.

Fig.1 pwm1.gif

TODO: Calculate efficiency at different load currents and put a graph here.

Documents

V1

V1_PCB

V2_SMD

BOM

ID Name Designator Footprint Quantity Manufacturer Part Mounted
1 LEDOUT LEDOUT CONNECTOR 5.0MM 1 2.54-1*2PFemale Yes C49661
2 NE555DR U2 SOIC-8_150MIL 1 NE555DR Yes C7593
3 VIN VIN CONNECTOR 5.0MM 1 2.54-1*2PFemale Yes C49661
4 100R R3 0603 1 RS-03K1000FT Yes C115420
5 NCE3018AS Q1 SOP-8_150MIL 1 NCE3018AS Yes C163739
6 1uF C1 0603 1 0603X105K160NT Yes C89188
7 1k R4 0603 1 WR06X1001FTL Yes C112433
8 M4 D2,D1 SMAF 2 M4 Yes C164158
9 50K R2 RES-ADJ_EVM3X3 1 EVM3ESX50B54 Yes C11962

Attachments

None

Members

Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.