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The Unified Modeling Language (UML) has become a widely adopted standard in the software development industry. Unfortunately, the UML is a semi-formal language which lacks precisely defined constructs. Z language is a formal specification language. Formal languages are used to ensure that systems meet regulations and standards. This paper aims to reduce risks associated with software development and...
The power factor of ac power controller circuits for resistive load drops to small values as the load power is reduced. This paper presents a new ac controller for resistive loads. The new controller has a good power factor for a change in the load power from 100% to 10%. Theoret-ical analysis of the controller circuit as well as experimental results are given.
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