Voltage Level Shifting
Voltage Level Shifting
(OP)
I am trying to figure out the best way, with the least number of components to translate a voltage from -12V-5V to 0V-5V. I am using a comparator to compare negative voltages and the only negative voltage I have available to me on my board is -12V, so I have to use this voltage to supply the comparator. I am able to get the +5V with a pullup, but my low level output is -12V. I am going into some CMOS Tinylogic gates that only accept -0.5V to 7V for inputs. Any help would be appreciated!





RE: Voltage Level Shifting
RE: Voltage Level Shifting
The 2nd '-': minus or dash? In other words, is that -12v to -5v, or -12v to 5v? I assume the latter.
Perhaps all that it required is a diode to block the minus voltages, effectively turning minus into zero. In other words, -12v to +5v, through a diode, becomes 0v to +5v.
You might (?) need a resistor (100k?) to swamp out the input Z if high in reverse bias.
RE: Voltage Level Shifting
RE: Voltage Level Shifting
RE: Voltage Level Shifting
RE: Voltage Level Shifting
What was you solution?
DH
RE: Voltage Level Shifting
RE: Voltage Level Shifting
RE: Voltage Level Shifting
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