In: Physics
What is the purpose of the ballast resistance in a HeNe supply? Make specific reference to the electrical characteristics of a gas discharge as compared to an "ohmic" resistance. What might happen to a power supply if the ballast resistor was omitted?
Please find the answer attached below. I have explained
electrical characteristics of a gas discharge in detail,Please go
through it. Breakdown voltage is the minimum voltage that needs to
be supplied to the system to make it highly conductive (or generate
electrical current ).