I am trying to separate grounds for a noisy side of an optocoupler and a clean side of the optocoupler. So I would need gnd1 for clean side and gnd2 for noisy side.
I have a bridge rectifier converting the input AC voltage to DC which one of the points on the rectifier is my ground (call it gnd1). Then I have some voltage regulators. The voltage regulators are tied to this same ground (gnd1). Can I not tie one of the voltage regulator's gnd pins to gnd1 and just call this pin a new gnd (say gnd2)? But it's really just a floating pin, then, right? I'm not sure the voltage regulator would work in this case.
I just can't see how to create a separate ground. Any help is appreciated. Thanks.
I have a bridge rectifier converting the input AC voltage to DC which one of the points on the rectifier is my ground (call it gnd1). Then I have some voltage regulators. The voltage regulators are tied to this same ground (gnd1). Can I not tie one of the voltage regulator's gnd pins to gnd1 and just call this pin a new gnd (say gnd2)? But it's really just a floating pin, then, right? I'm not sure the voltage regulator would work in this case.
I just can't see how to create a separate ground. Any help is appreciated. Thanks.