null voltage การใช้

• The step number n and sometimes the frequency f are adjusted to make the null voltage as small as possible.
• Here, V _ a = nf / K _ J is the Josephson array voltage, " V " 0 is a combination of thermal offset voltages and any offset voltage in the nullmeter, mt represents a linear drift component of the offset voltage, P = \ pm 1 is the polarity of the reversing switch, V _ \ text { null } is the differential null voltage, and V _ \ text { noise } represents noise in the unknown, the null meter, and any other sources of random noise.