Abstract: A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

Abstract: A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

Abstract: A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

Abstract: A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.

Abstract: Serial bus modules with unique multibit identifications that may be searched with multiple modules on a single bus. Modules may contain temperature history per integrated Arrhenius temperature dependent signal. Modules may be packaged as tokens or as two or three lead plastic plastic, also with the three lead packages further functionality as sensors or switches may be incorporated into the modules.

Abstract: A method of communicating information between a host device and a potentially portable module device which measures thermal accumulation over time via a temperature controlled counter. The temperature controlled counter may operate using substantially Arrhenius' law. The host device communicates with the portable module via a single wire bidirectional data bus. The single wire bus and one-wire communication protocol allows data flow between a host and a plurality of devices connected to the single wire bus. The single wire bus allows for a great versatility of uses for the portable module.

Abstract: A DC electrical power supply system for converting AC power to DC power for various telecommunications equipment loads includes plural rectifiers mounted on one or more shelves and adapted to be inserted on and removed from said shelves, at will. One or more voltage converters may be inserted and removed from said shelves at will and include adapter plates for supporting the converters in place of a rectifier unit. The power supply system includes a frame supporting the shelves and a cabinet which includes busworks for connecting the rectifiers to circuit breaker tiers and to a battery pack. Low voltage disconnect devices may be interposed in the buswork at selected locations to provide operation in a battery protection mode, load protection mode and load shedding mode. The circuit breaker tiers, buswork, shelving, rectifier units and converters are all accessible for connection and disconnection from the front side of the power supply system.

Abstract: A communication module comprises a substantially token-shaped body with first and second electrically conductive surface areas. The first and second surface areas are electrically isolated from each other and circuitry is positioned in the cavity within the substantially token-shaped body, and has connections to said first and second areas. The substantially token-shaped body has a perimeter around it. The first and second electrically conductive surface areas form a substantial portion of the substantially token-shaped body. The first and second electrically conductive surface areas form a cavity. One of the surface areas forming a flange around the perimeter of the substantially token-shaped body. The flange preferably resides in one geometric plane. The circuitry provides for the receipt and transmission of digital signals that are determined as voltage differences between said first and second areas.

Abstract: A printer port adapter which permits electronic keys to be accessed through the printer port of the PC, without disrupting the normal operation of the printer port in any mode of operation whatsoever. The electronic keys used have a one-wire signal interface, and this interface can be inserted into the full standard ISA printer port pin assignment, as well as the all known nonstandard additional assignments which have been overlaid onto the standard printer port.

Abstract: A transceiver (100) for TTL and RS232 communication with automatic sensing (130) of the type of input and adjustment of the output to correspond together with current stealing (131) from the input communication lines to provide extreme voltages for transmission. Hysteresis and surge suppression are built into the sensing.

Abstract: A transceiver (100) for TTL and RS232 communication with automatic sensing (130) of the type of input and adjustment of the output to correspond together with current stealing (131) from the input communication lines to provide extreme voltages for transmission. Hysteresis and surge suppression are built into the sensing.