Self-locking circuit arrangement

A circuit arrangement comprising:

• an input voltage connection for applying an input voltage (UE);
• an output voltage connection for providing an output voltage (UA);
• supply voltage connection for connecting a supply voltage (UV);
• a first switching element (T1) having a first and a second output connection and a control connection;
• a second switching element (T2) having a first and a second output connection and a control connection;
• a voltage divider connected in parallel with the output voltage connection and having a junction connected to the control connection of the second switching element (T2);
• the first output connection of the first switching element (T1) is connected to the output voltage connection, the second output connection of the first switching element (T1) is connected to a reference-ground potential;
• the first output connection of the second switching element (T2) and also the control connection of the first switching element (T1) are connected to the input voltage connection, the second output connection of the second switching element (T2) is connected to the reference-ground potential;
• and
• the control connection of the second switching element (T2) is connected to the output voltage connection thereby forming a self-locking circuit whereby the output voltage (UA) rises from zero to a prescribable value dependent on the supply voltage (UV) following a decrease in the input voltage (UE), the output voltage remaining at the prescribable value until the supply voltage (UV) is decoupled or the output voltage (UA) is shorted.