I do not understand your question. The theoretical Dirac delta function contains all frequencies. This can have any amplitude as proscribed for the analysis. In signal processing this is called the unit impulse function and it has an amplitude of 1. This is strictly not a voltage though for the Y axis need not be a voltage.
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"Don't disturb my circles." translation of Archimedes last words
Without some context it is just a jumble of words.
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"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Impulse and power frequency voltages are two different things. Power frequency refers to the normal system power frequency voltage (normally 50 or 60 Hz) consisting of both positive and negative polarities with a periodic waveform. Impulse voltage is a wave of unidirectional polarity; either positive or negative with respect to zero but not both.