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Older ballasts with an iron core are basically an autotransformer. They transform voltage to a higher voltage with a single winding. Electronic Transformers increase voltage with capacitors and diodes.
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What are the Principles of operation of automatic voltage regulator?
The principles of operation of the automatic voltage regulator is that of the excitation system. The working principle is to regulate the flow of reinforcement on the exciter.
What is the principle of operation of explosive detector?
They usually respond to airborne volatile chemicals, which are typical around explosives.
How do you rewire a magnetic ballast F96T12 fixture to work with a new electronic ballast?
The end sockets have to be rewired. The schematic for the rewire is on the ballast label.
Can you use a 400W high pressure sodium bulb in a metal halide ballast?
No, the ballast has to be matched to the lamp. 250 watt ballast, 250 watt lamp. Also be sure to match the lamp type to the proper ballast even though the wattage is the same. HPS ballast to HPS lamp, Metal halide ballast to metal halide lamp and mercury vapour lamp to mercury vapour ballast.
Why bjt is called current controlled current device?
Because the operation of the transistor is determined by the current at the base. the principle equations of BJT operation are: Ic = h*Ib ,and Ie=Ib+Ic thus device operation is controlled by the input current.
