I need to reduce 24VDC to 12VDC. The load draws <.6 amps @ 12VDC. The LM 317T is supposed to handle up to 1.5A. I made the simple circuit with a couple resistors and have the desired voltage in/out voltage but the LM317 is getting too hot still even with a heat sink on it. I reduced the load to about .319 amps and it still gets hot. Is this because I am dropping the voltage so much? Is there any way I can keep the temperature down by reconfiguring the circuit? Possibly different value resistors in different spots? Below is a diagram of what I put together, R2 is 1.2K ohms, and R1 is 135 ohms. If I put a higher resistance on R1 and drop R2 would that make any difference? I know I can achieve the desired output voltage with various configurations but would like some input.
Any tricks to parallel two or more LM317's together to get more current capability? Also, if anyone has another way to drop 24v to 12v reliably feel free to post it. I'd like to keep it simple and inexpensive. What I'm doing is adding a small neon transformer/lights made for PC's to an industrial control panel with a build in 24V power supply. I use them in some other panels I make that can use 12v throughout but I have some where the primary voltage requirement is 24v and I don't want to have to add another power supply.
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Any tricks to parallel two or more LM317's together to get more current capability? Also, if anyone has another way to drop 24v to 12v reliably feel free to post it. I'd like to keep it simple and inexpensive. What I'm doing is adding a small neon transformer/lights made for PC's to an industrial control panel with a build in 24V power supply. I use them in some other panels I make that can use 12v throughout but I have some where the primary voltage requirement is 24v and I don't want to have to add another power supply.
**broken link removed**