- Sun Apr 07, 2013 6:51 pm
#157994
I recently purchased a LM 358 op amp hoping to amplify 0-1V Dc coming from a COM-10613 digital pot to 0-2V Dc. I can't figure out what I am doing wrong however at the maximum end with a 1V in, I am only getting .7V out. Any help anyone could provide would be greatly appreciated. Attached is a wiring schematic of what I hooked up.
http://img850.imageshack.us/img850/6029 ... 2237pm.jpg
To make you all aware of the overall purpose of the circuit. I am attempting to simulate the trigger on a cordless drill. I was able to use the digital pot to ramp the voltage allowing for a smooth actuation from off to running. However, the wiper arm on the pot killed half of my voltage not allowing me to reach maximum speed. So I was hoping to use an op amp to amplify the trigger output voltage back to 2V.
Thank you in advance.
http://img850.imageshack.us/img850/6029 ... 2237pm.jpg
To make you all aware of the overall purpose of the circuit. I am attempting to simulate the trigger on a cordless drill. I was able to use the digital pot to ramp the voltage allowing for a smooth actuation from off to running. However, the wiper arm on the pot killed half of my voltage not allowing me to reach maximum speed. So I was hoping to use an op amp to amplify the trigger output voltage back to 2V.
Thank you in advance.