| http://www.w3.org/ns/prov#value | - o a first reset signal; measuring the battery voltage VB1 before the conversion phase; generating the first reset signal to limit the on time to a time ton =K/VB1, where K is a predetermined constant; generating a second reset signal when the battery voltage VB falls below a predetermined reference voltage VR, wherein VR =VB1 -??VB, wherein VB1 represents the battery voltage before the conversion
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