I have some gaps in my understanding of grounding.
I am using a signal generator which uses a 5v switched power supply plugged into 240v mains supply. The sig-gen output is going to a mosfet gate driver. The gate driver can make use of 12A so I want to make this available from a 12v lead-acid battery.
I don't have a bench PSU with that kind of amps. Neither do I have a true sine wave inverter to power the system.
At the moment the sig-gen negative is on the gate driver ground. But if I put the positive and negative of the battery to the V+12 pin and ground of the gate driver this means the battery is now using the same ground as the mains... I think.
Is this safe for the equipment? I also have an oscilloscope grounded on the gate driver ground pin.
Thank you.
I am using a signal generator which uses a 5v switched power supply plugged into 240v mains supply. The sig-gen output is going to a mosfet gate driver. The gate driver can make use of 12A so I want to make this available from a 12v lead-acid battery.
I don't have a bench PSU with that kind of amps. Neither do I have a true sine wave inverter to power the system.
At the moment the sig-gen negative is on the gate driver ground. But if I put the positive and negative of the battery to the V+12 pin and ground of the gate driver this means the battery is now using the same ground as the mains... I think.
Is this safe for the equipment? I also have an oscilloscope grounded on the gate driver ground pin.
Thank you.