bigone5500
Well-Known Member
I have a LM7812 regulator. I want to use it to build a step down power supply to power my LEDs from my 24v PSU inside my ender 5 printer. I connected the regulator with a 1uF capacitor and 1N4004 on the input side and .22uF capacitor on the output side. I get my 12v but the regulator generated a substantial amount of heat. I am currently drawing 245mA of current to the LED strip. The heatsink is giving off about 145F temps. I wonder if it's just not going to work. The regulator is rated for 1.5A. Maybe I need a larger heatsink?
![20201220_152821.jpg 20201220_152821.jpg](https://www.rc-help.com/data/attachments/18/18900-0d0563b566c4fb5e9428a208344d44a3.jpg)
1x5/8x5/8"
![20201220_152834.jpg 20201220_152834.jpg](https://www.rc-help.com/data/attachments/18/18901-d43610fd42eab55ee988e1253ae57f66.jpg)
Output waveform
![20201220_140823.jpg 20201220_140823.jpg](https://www.rc-help.com/data/attachments/18/18902-a86aa4c3d1fbf19fd57b63e2de3662ab.jpg)
![20201220_152821.jpg 20201220_152821.jpg](https://www.rc-help.com/data/attachments/18/18900-0d0563b566c4fb5e9428a208344d44a3.jpg)
1x5/8x5/8"
![20201220_152834.jpg 20201220_152834.jpg](https://www.rc-help.com/data/attachments/18/18901-d43610fd42eab55ee988e1253ae57f66.jpg)
Output waveform
![20201220_140823.jpg 20201220_140823.jpg](https://www.rc-help.com/data/attachments/18/18902-a86aa4c3d1fbf19fd57b63e2de3662ab.jpg)