Abstract: A voltage regulator includes a current bridge and first and second current paths coupling a current mirror to respective first and second voltage-to-current converters. The current mirror controls a second current dependent on a first current. The first voltage-to-current converter controls the first current dependent on either a reference voltage or a feedback voltage derived from the regulator's output voltage, and the second voltage-to-current converter controls the second current dependent on the other of the feedback and reference voltages. Voltage-to-current conversion by the first converter is independent of voltage-to-current conversion by the second converter. An output transistor stage coupled to the second current path controls the output voltage dependent on the voltage in the second current path indicative of a deviation of the second current from a target current value dependent on the reference voltage.

Abstract: A level shifter (21) comprises a first stage (22) and a second stage (23). The first stage (22) comprises first and second inputs (34, 35) and is configured to generate a first signal (37) which indicates in a first state if either at least one of at least two first power voltages (Vdig, Vdda) provided for circuitries (38, 39) is unavailable or in a second state if each of the first power voltages (Vdig, Vdda) is available at the first and second inputs (34, 35). The second stage (23) comprises an output (51-54) and is configured to switch a second power voltage (Vbat) through to be present at the output (51-54) only if the first signal (37) is in its second state.

Abstract: Apparatus (10) comprising a level shifter (15) connectable to a signal input (1) for receiving an input signal (s(t)) with a negative signal swing. The level shifter (15) provides for a DC shift of the input signal (s(t)) to provide an output signal (r(t)) with positive signal swing. The level shifter (15) comprises an amplifier (17) with a first input (11), a second input (12), and an output (13). A first capacitor (C1), a second capacitor (C2), a reference voltage supply (16), and a transistor (14; 74) serving as a switch, are arranged in a network as follows: the first capacitor (C1) is arranged between the signal input (1) and the first input (11), the second capacitor (C2) is arranged in a feedback-loop (18) between the output (13) and the first input (11), and the reference voltage supply (16) is connected to the second input (12). The transistor (14) is arranged in a branch (19) that bridges the second capacitor (C2), whereby a control signal (CNTRL) is applicable to a gate (14.

Abstract: Fibres containing casein and at least one heat-settable protein are prepared by dry-spinning an aqueous protein mixture containing calcium- and phosphate ions at a temperature below the gelling point of the protein mixture and drying the fibres obtained.