Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Resource icon

Simple, Efficient, Inexpensive, High-Power LED Constant-Current Switching Supply 2017-01-25

Status
Not open for further replies.

crutschow

Well-Known Member
Most Helpful Member
crutschow submitted a new article:

Efficient LED Constant-Current Switching Supply - Constant-current hysteretic buck regulator supply for higher power LEDs, efficiency of >85%

Note: This article is in the process of being updated--

Resistors or linear constant-current sources are okay for small, low-current LEDs but it's desirable to use a better efficiency switching supply for higher power LEDs.
Here's is a relatively simple switching constant-current supply that uses the common LM339/393 as part of a relatively simple and reasonably high efficiency circuit.

Below is the LTspice simulation of the regulator for up to about 1A LEDs.
It's a...

Read more about this article...
 
Last edited by a moderator:
Hi,
Instead of IC buffer cannot we use small P or N FET as non-inverting buffer to make it more easy and cheap?
 
Status
Not open for further replies.

New Articles From Microcontroller Tips

Back
Top