Neon_cloud
New Member
Hi
I am doing a project in which I need a Power amp (wired as a voltage follower) to power a 12v 6w bulb.
I have tried using this L272M chip, but it gets very hot, and after a while of the bulb being on, the output voltage and current of the chip both drop (The input of the chip comes from a D-A converter op amp with max output 13ish volts and an inverting op amp to keep the voltage positive)
The pin diagram I found of the chip recommends powering the L272M to +5 and -5V, but this was not suitable due to the large 13V input voltage it needs, so I tried it 0v and +15v, and it got very hot and the current and voltage output drop. Is there a chip that could pump out enough current to power this bulb and not get hot/lose output voltage/current..
Thanks
https://www.electro-tech-online.com/custompdfs/2012/02/CD00000054.pdf
(The L272M chip)
I am doing a project in which I need a Power amp (wired as a voltage follower) to power a 12v 6w bulb.
I have tried using this L272M chip, but it gets very hot, and after a while of the bulb being on, the output voltage and current of the chip both drop (The input of the chip comes from a D-A converter op amp with max output 13ish volts and an inverting op amp to keep the voltage positive)
The pin diagram I found of the chip recommends powering the L272M to +5 and -5V, but this was not suitable due to the large 13V input voltage it needs, so I tried it 0v and +15v, and it got very hot and the current and voltage output drop. Is there a chip that could pump out enough current to power this bulb and not get hot/lose output voltage/current..
Thanks
https://www.electro-tech-online.com/custompdfs/2012/02/CD00000054.pdf
(The L272M chip)
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