Abstract: A voltage limiter for a signal receiver (1), the voltage limiter (20) including: an input (21) connectable to a signal source (10); an output (22) connectable to a detector (70) and connected to the input (21) via a signal conductor (30); a ground conductor (40) connectable to ground (5); a first branch (24) connected to the signal conductor (30), connected to the ground conductor (40) and comprising a first diode element (52); a second branch (25) connected to the signal conductor (30), connected to the ground conductor (40) and comprising a second diode element (53); and a resistor element (36, 54, 55) between the signal conductor (30) and the ground conductor (40).

Abstract: The disclosure concerns an oscillator circuit (10) for a signal transmitter, the oscillator circuit (10) comprising: a resonant circuit (12) comprising a resonant inductor (LR) and a resonant capacitor (CR) parallel to the resonant inductor (LR) or comprising a crystal device, a driving branch (14) comprising a pump capacitor (CP) connected to the resonant circuit (12), a feedback branch (20) connected to the resonant circuit (12), a phase shifting circuit (22) connected to the resonant circuit (12) via the feedback branch (20), a comparator circuit (24) connected to the feedback branch (20) via the phase shifting circuit (22) and a driver circuit (28) connected to an output of the comparator circuit (24) and operable to charge the pump capacitor (CP).

Abstract: A voltage regulator for driving a digital circuit includes an input terminal and an output terminal, a pass device and a first capacitor, and a boost circuit connected to the pass device or to the first capacitor and having a regulator boost input terminal connectable to the boost signal output terminal. The output terminal is connectable to a power terminal of a digital or switching circuit having at least a boost signal output terminal. The boost circuit includes a boost capacitor and a switching arrangement connected to the regulator boost input terminal and connected to the boost capacitor. The switching arrangement is controllable by a boost signal generated by the digital or switching circuit.

Abstract: A voltage regulator for driving a digital circuit includes an input terminal and an output terminal, a pass device and a first capacitor, and a boost circuit connected to the pass device or to the first capacitor and having a regulator boost input terminal connectable to the boost signal output terminal. The output terminal is connectable to a power terminal of a digital or switching circuit having at least a boost signal output terminal. The boost circuit includes a boost capacitor and a switching arrangement connected to the regulator boost input terminal and connected to the boost capacitor. The switching arrangement is controllable by a boost signal generated by the digital or switching circuit.