Tagged Questions
3
votes
3answers
212 views
Power management for a 5V 12A load
I need to deal with a peak load at 5VDC and about 11.25A but I'm not sure how to manage this.
I have 5 individual loads of 2.25A and small loads from an MCU and some LEDs all of which should fit into ...
9
votes
1answer
562 views
Why does TO-220 79xx voltage regulators conduct the input voltage to the heat sink?
I find it somewhat dangerous to connect a large heat sink on 79xx series voltage regulators. Because they transfer all the negative voltage to the heat sink. Why just they didn't make the 2nd pin of ...
3
votes
3answers
332 views
Regulator cooling in a confined space
I've designed a simple PWM RGB LED slow fader to be used as a garden lighting effect. My circuit works great, but I under-estimated the amount of heat that is generated by the 7805 linear regulator.
...
5
votes
6answers
967 views
How to keep a linear regulator cool without an actual heatsink?
I want to use a linear regulator for some application, it's in a SOT-223 (not SOT-89) package. How do I keep it cool, preferably without a bulky heatsink? The regulator may be dissipating 2-3W of ...
4
votes
4answers
302 views
Low Profile Power Dissipation
I have a project where my power supplies are giving me a bit of a headache. I have three voltage regulators that I am trying to run from a single bench power supply. There are two 3.3V regulators, and ...
