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Combining 2 analog signals

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eozalp

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Hello forum,

I have two analog signals. The first one is 0..+30V and the second one is 0..-30V volt.
How can I combine them to form a -30..30V signal.

Thanks
 

1) feed them to a transformer with 2 primary.
2) use capacitor to block DC and then use an adder op-amp to add the signals. out put opamp should have +/-30v supply

hock
 

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