Hello
I am making a power supply to power a Raspberry Pi/camera/touch screen (5V @3A), and some LEDs, servos/motors (12V LEDs and 9V servos/motors). I am using a 12V/5A adapter to supply power, and an LM2576 switching regulator to take the 12V down to 5V @3A for the pi etc. and a 7809 to drop 12V to 9V for the servos.
When I did my first test with the Raspberry Pi attached to 5V, it worked fine... beside the smoke starting to come from the regulator! I immediately turned it off and it still provides 5V at low loads, so I assume putting a heat sink on will fix my overheating problem... but I don't know if the ones I have are sufficient (recovered from old equipment). Could someone point me in the right direction please?
I am making a power supply to power a Raspberry Pi/camera/touch screen (5V @3A), and some LEDs, servos/motors (12V LEDs and 9V servos/motors). I am using a 12V/5A adapter to supply power, and an LM2576 switching regulator to take the 12V down to 5V @3A for the pi etc. and a 7809 to drop 12V to 9V for the servos.
When I did my first test with the Raspberry Pi attached to 5V, it worked fine... beside the smoke starting to come from the regulator! I immediately turned it off and it still provides 5V at low loads, so I assume putting a heat sink on will fix my overheating problem... but I don't know if the ones I have are sufficient (recovered from old equipment). Could someone point me in the right direction please?