Comments on: Cheap Universal LED driver (CULD) https://milwaukeemakerspace.org/2023/06/cheap-universal-led-driver-culd/ Conceive, Collaborate, Create Sat, 01 Jul 2023 20:29:13 +0000 hourly 1 https://wordpress.org/?v=6.4.4 By: Tim42e https://milwaukeemakerspace.org/2023/06/cheap-universal-led-driver-culd/#comment-1115776 Sat, 01 Jul 2023 20:29:13 +0000 https://milwaukeemakerspace.org/?p=11109#comment-1115776 So a couple of comments, your design is good, i really like the concept.

Inductor issues,
1. The chosen inductor has a max current of 300ma, this max current has to be sized for the output current plus the ripple current. This means I would not run more than about 200ma on your output.

Current sense resistor power
Your resistor seems to be sized as an 0603, standard 0603 resistors have a power of 0.1W which means the max current allowed is 131mA at a minimum of 5.9 ohms.

That’s all I am going to review on my phone.

But, I am an electronics engineer and product designer. I also have a pick and place machine and reflow oven. I would like to work with you to redesign this, and do a small first run.

Tim

]]> By: Jon D. https://milwaukeemakerspace.org/2023/06/cheap-universal-led-driver-culd/#comment-1114955 Mon, 26 Jun 2023 06:22:12 +0000 https://milwaukeemakerspace.org/?p=11109#comment-1114955 Wow. I don’t really understand most of this but I do know this is super impressive!

]]> By: Jon D. https://milwaukeemakerspace.org/2023/06/cheap-universal-led-driver-culd/#comment-1114954 Mon, 26 Jun 2023 06:21:01 +0000 https://milwaukeemakerspace.org/?p=11109#comment-1114954 wow! impressive!

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