Friday, 17 February 2017

operational amplifier - How can LM324 work in dual supply mode when it only has 2 pins for the supply?


The LM324 quad opamp data here says that it can work in single as well as dual supply mode. However, it has pins for positive supply and another for ground on its sides. The pin for ground can also be used for negative supply as per the datasheet. However, if we shall only connect the +V and -V and no GND, how does the concept of -V arise in the operation of the op-amp?




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