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Build a simple circuit to convert negative pulses to positive pulses.
Hello makers, future engineers, techs & students. Today I will talk about how you can build a negative to positive pulse circuit with minimal components. In the simulation I use a pulse_voltage that generates -5V to 0V pulses. Other components used include 3.3K and 5.1K resistor, a NPN 3904 transistor and a N4004G.
The capacitor is the key component that allows the conversion of the voltage seen on the oscilloscope. Since the characteristics of capacitors are to accumulate equal but opposite, when placed in a circuit negative to positive or positive to negative the capacitor will allow accumulation of negative or positive charge on its plates.
A great article on capacitors and negative voltage can be found here https://www.allaboutcircuits.com/projects/build-your-own-negative-voltage-generator/