## Related questions with answers

Neon signs require $12 \mathrm{kV}$ for their operation. To operate from a $240\mathrm{V}$ line, what must be the ratio of secondary to primary turns of the transformer? What would the voltage output be if the transformer were connected in reverse?

Solutions

VerifiedWe are given:

$\begin{aligned} \text{Output voltage:~}V_s & = 12\mathrm{~kV}= 12\cdot 10^{3}\mathrm{~V}\\ \text{Input voltage:~}V_p & = 240\mathrm{~V}\\ \end{aligned}$

We must find the ratio between the number of turns on the primary and the secondary coil on the transformer. We then must find the output voltage if transformer is wired backwards.

In this problem, it is stated that the neon signs require 12000 volts for their operations. What we need to do here is to find the ratio of secondary to primary turns of the transformer, so the transformer would be able to operate from 240 volts line.

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