Honeywell International Inc.

Bart Meijer

Murali Krishna Bezawada

John Boettger

Antony Baskar Arul

Suresh Babu Dtvs

Tushar N Nisith Shrimankar

Gopalakrishnan Rangarajulu

A power conditioning circuit includes at least one power storage device having electrodes coupled for receiving power from a DC power source. At least one active current limit (ACL) circuit coupled to the electrodes of the power storage device is for limiting a maximum power output from the power storage device under fault conditions. A DC-to-DC converter has its inputs coupled to the ACL circuit. At least one crowbar circuit has a first terminal and a second terminal and a shorting device coupled to an output of the DC-to-DC converter for providing output terminals for the power conditioning circuit.

Intrinsically safe power conditioning circuit

An interface device for providing Intrinsic Safety to a Smart Identity Module (SIM) card includes a buffer circuit including a voltage regulator and a voltage level translator including drivers. Baseband processor side pins include at least an input/output (IO) pin for receiving data signals, first SIM reset (RST) pin, core power supply (VCC) pin, a clock (CLK) pin, a battery power supply (VBAT) pin, and SIM side pins include at least a VCC pin, a SIM CLK pin, second SIM RST pin, and a SIM IO pin. There is at least one series resistor (R, R, R, Rand R) in series with each of the baseband processor side pins.

Interface device providing intrinsic safety for a communications device

An intrinsic safe in-line adaptor with an integrated capacitive barrier for connecting a wireless module with an antenna. The in-line adaptor (e.g., N-type to N-type) can be designed to include an intrinsic safe circuit and the integrated capacitive barrier. The intrinsic safe circuit further includes a multi-layer PCB and the PCB can be potted and sealed with a mechanical metal casing. The intrinsic safe capacitive barrier can be integrated with a coaxial connector and mounted as part of a flameproof enclosure to meet an explosion safety standard and an intrinsic safety requirement. The mechanical metal casing can be isolated by the enclosure (e.g., rubber) to meet isolation requirements. The wireless module can be directly connected with the antenna utilizing the in-line adaptor via the coaxial connector and without any specific cable assembly.

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Zuid Holland, Netherlands

Bart Meijer