Aspects of the disclosure provide a power circuit to provide electric energy with control and protection for driving a load, such as a light emitting diode array, and the like. The CES emulates a circuit from a local interworking function to a remote interworking function. A determination is made as to whether the trace command is for a full trace or a differential trace, where the full trace traces all the one or more specified fields, and the differential trace traces specified fields only in response to the specified fields having a value that has changed during processing. Communication of the braking information may take place utilizing an Automatic Dependent Surveillance Broadcast system andor other type of automatic networking system. 8 to 11 mass % of Na2O+K2O, contains from 100 to 500 ppm of SO3, has an average coefficient of thermal expansion from 50 to 350\xb0 C. The printed circuit board assembly includes a printed circuit board including a thermal conductive layer thermal conductively connected with the metal shell.