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Ground connection , reference point on a circuit board

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evios

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Ground, reference point

Well basically how can I get a ground connection on a circuit board?
A circuit board will have 2 rails, one at the upper connected to the positive terminal of the source (battery) and the other will be the negative terminal from a battery. How about ground? Because my project consist of bipolar terminals and ground connection.

Thank you for reply.
 

Re: Ground, reference point

Hi,
If you are using a circuit with unipolar supply, the negative of the battery may be grounded. This circuit can not directly handle bipolar signals unless converted to unipolar by level shifting. Otherwise the circuit should be designed for bipolar supplies, in which case the midvalue (0V) of the supply will be the ground.

Regards,
 
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Re: Ground, reference point

laktronics said:
Hi,
If you are using a circuit with unipolar supply, the negative of the battery may be grounded. This circuit can not directly handle bipolar signals unless converted to unipolar by level shifting. Otherwise the circuit should be designed for bipolar supplies, in which case the midvalue (0V) of the supply will be the ground.

Regards,
Laktronics
Click to expand...

My circuit implementation is **broken link removed**
So which means i need a level shifter?:|
Well thanks for your reply.
 

Re: Ground, reference point

Hi Evios,

No, you don't need a level shifter. Looking at your schematic, you only need two terminal connections on the input and two on the output.

Internally, your circuit "ground" connects to the negative input terminal. All of those "0V" power port symbols then connect to that "ground".

The negative "LOAD" terminal connects to the node between R15 and R18, and the positive terminal connects where indicated. The very low resistance R15 is in the circuit to allow you to measure the current for the Wattmeter circuit.
 

Re: Ground, reference point

Because my project consist of bipolar terminals and ground connection.
Click to expand...
I don't see, how this statement is related to the said circuit, that apparently does a power measurement for an unipolar battery supply. If you are intending a different kind of power measurement, you possibly need a different circuit. Please clarify your requirements in this case.
 

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