It's a pair of diodes combining a battery output with a power supply output. A seemingly trivial schematic, which I do not believe requires a drawing. Maybe, I missed something in your original post, and there was something else you had in mind. Can you elaborate?
i've seen a medium cabinet that contain an UPS , its used for a HAEMODIALYSIS UNIT so it doesn't looks like a normal UPS ....... thats why i wanna know what its looks like , i mean the circuit .....
i've seen a medium cabinet that contain an UPS , its used for a HAEMODIALYSIS UNIT so it doesn't looks like a normal UPS ....... thats why i wanna know what its looks like , i mean the circuit .....
It makes a difference if the power supplied is AC or DC. The previous answer I gave was appropriate for a UPS with a DC output. If the UPS in which you are interested is an AC unit, then the batteries are used to power an inverter which converts DC back to AC. The AC from the mains and the AC from the inverter are switched so that power is drawn from the mains if they are there and from the inverter when they are not. To track down what you are looking for I suggest you start by investigating the DC to AC inverter circuit.
i've seen a medium cabinet that contain an UPS , its used for a HAEMODIALYSIS UNIT so it doesn't looks like a normal UPS ....... thats why i wanna know what its looks like , i mean the circuit .....