4.3.2 Countermeasures against irregularities of the relay drive processing
Figure 4.15 shows the relay driver by the boost voltage circuit. The input voltage Vs (5V) is provided as the input to the boost circuit. The magnitude of VO is, as described above, 24V, and the relay drive voltage is designed to fit this condition. The voltage ratio ( ) of the boost voltage is given as follows;
The boost voltage ratio equation: