Is there a circuit that changes low signal from 0V to -5V?

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5V and -5V

Hi, right now I have a signal that is either high(5V) or low(0V). Is there any circuit that can make this signal when it is high, it's 5V and when it is low, it is -5V instead of 0V?
 

5V and -5V

just put a opamp comparator with +5 and -5 volt as its power supply and feed the signal to + input and tie the - input of opamp to ground.
 

Re: 5V and -5V

The idea of the comparator is good but you must tie the inverting input to +2.5V and not to ground (0V). You can produce +2.5V with a voltage divider from +5V and -5V (for example use 10K and 30K resistors). Also use a comparator and not an opamp.
 

5V and -5V

2 BJTs can do a job , even one BJT will do it (pnp common base )
 

Re: 5V and -5V

use a cap after charged to 5V, then reconnect the 5V to zero, the other side will be -5V.
 

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