SPANNUNGSFOLGE-STEUERSCHALTUNG

摘要

The present invention provides means for sequencing various supply voltages to electronic circuits and devices to thereby protect those circuits and devices from exposure to deleterious voltages. A first transistor switch connects a first voltage source to a first output terminal. A second transistor switch is connected to the control electrode of the first transistor switch. The second transistor switch, when conducting, causes the first transistor switch to conduct. The second transistor switch is turned on by a second voltage source which is connected through a delay circuit to the control electrode of the second transistor switch. The second voltage source also is connected through a diode and capacitor circuit to a second output terminal.