Figure 1 shows the circuit diagram of a peripheral block which is sensing the temperature with resistive sensors as NTC or PTC. The voltage reference source is the integrated circuit (IC) LM317L/M/T.

With this simple circuit configuration, an optoisolator can drive a standard 2N2222 transistor output high or low to indicate if the line voltage is 120 V or 220 V ac.

This creates an SFG that matches the circuit schematic. The SFG clearly shows circuit operation and can be used as a circuit description. In VSA, the voltage at each schematic node becomes an SFG node ...

Note that because there is a common portion of the winding (Section 1-2), there is no isolation between the input and output circuits. Also note that there is only one winding. As shown in the diagram ...

The schematic lists three Crydom SSRs based on load rating. Any SSR can be used as long as it has zero-voltage switching with a maximum turn on/off of one half cycle.

Systems are often designed using a system block diagram that considers the ‘input, process and output’ close input, process and output The series of events that makes a system. of a system: ...