Microblog: A very long article Wikipedia article on the orientation of toilet paper [Jun 7th, 22:52] [R]

Tuesday, May 24th, 2011

New Op Amp

Categories: [ DIY ]

I finally got the courage to try out the new op amp model (LT1495) I received last week.

I tried out the current monitor circuit, and it works. The supply voltage for the op amp was 5 V, and I measured the current going through a red LED, powered with 15 V (coming from a supposedly 12 V power adapter). The measurement was 33,6 mA instead of the 31 mA given by the amperemeter. Not very accurate, but I don't actually need high accuracy.

Next step: trying to re-build the motor speed-controller circuit, get it stable enough that it doesn't reboot the Arduino all the time, and check how the current monitor behaves when the current is switching on and off all the time.

[ Posted on May 24th, 2011 at 21:52 | no comment | ]