Back to results
US 6,603,392 B1Granted
Control circuit for an alarm tone generator
AssigneeRobert Bosch GmbH
InventorRoss Richard Ramm
Life of this patent
Estimating the term…
Abstract
A driver circuit for an alarm tone transducer includes a signal generator for generating a first signal, a converter for converting the first signal into a second signal for the alarm tone transducer, a battery as a power supply for the circuit, and a circuit for raising the voltage to increase the voltage supply for the signal generator.
Claims5
A driver circuit for an alarm tone transducer, comprising:
- a signal generator for generating a first signal;
- a converter for converting the first signal into a second signal for the alarm tone transducer;
- a battery for use as a power supply for the driver circuit;
- and
- an amplifier circuit arrangement for providing a voltage to increase a voltage supply for the signal generator;
- wherein the converter includes an inductance arrangement, the amplifier circuit arrangement includes a capacitor coupled to a coil of the inductance arrangement, the converter includes a switch coupled to the inductance arrangement, the switch being switched on and off by the first signal, and wherein the battery is coupled in parallel with a series coupling of the inductance arrangement and the capacitor, the capacitor being coupled in parallel with the switch.
3 more elements
Dependencies are inferred from the claim text.