Abstract: The present invention provides a portable ice chopper assembly having dual reciprocating blades for chopping ice. A gear box assembly is connected to the rotating motor assembly for converting the rotating movement of the motor assembly into reciprocating movement of the dual chopping blades. Dual reciprocating plungers are connected to and driven by the gear box assembly for driving the plungers in a reciprocating up and down linear movement, wherein the plungers each have respective horizontal actuating bars. The cutting blades move up and down in a linear reciprocating movement, with the two cutting blades moving up and down in an alternating manner to chop the ice.

Abstract: An improved power supply unit includes a DC power source having a positive terminal and a negative terminal, and a voltage regulating circuit that includes a plurality of elements coupled in series between the positive and negative terminals of the DC power source to regulate the power supply signals supplied thereto to effectively cancel ripple and noise in such power supply signals. In one embodiment, the series-coupled elements include at least one resistor and a transconductive element having a characteristic transconductance value of T. The at least one resistor provides a resistance substantially equal to 1/T. The transconductive element and the one resistor cooperate to suppress spurious voltage level variations produced by the DC power source. The transconductive element may be realized by a thermionic triode, field effect transistor or other suitable device.

Abstract: A circuit controlling the transmission of information from a testing probe to an ICE.TM. base unit for debugging an electronic component having a dedicated bus. The circuit comprises a plurality of gate arrays coupled together to operate in a pipeline fashion. Each of the plurality of gate arrays includes a bus tracking component, a formatting component, filtering circuitry and address translation circuitry. The bus tracking component monitors the dedicated bus and transfers internal command signals to its associated formatting component and formatting components of the other gate arrays. The formatting component transfers only completed data to the ICE.TM. base unit for tracing. If in "Format" mode, the formatting component synchronously aligns the completed data and its associated addressing information before transferring such information to the ICE.TM. base unit. In "Raw" mode, however, information from the electronic component is immediately transferred to the ICE.TM. base unit without alignment.

Abstract: A circuit controlling the transmission of information from a testing probe to an ICE.TM. base unit for debugging an electronic component having a dedicated bus. The circuit comprises a plurality of gate arrays coupled together to operate in a pipeline fashion. Each of the plurality of gate arrays includes a bus tracking component, a formatting component, filtering circuitry and address translation circuitry. The bus tracking component monitors the dedicated bus and transfers internal command signals to its associated formatting component and formatting components of the other gate arrays. The formatting component transfers only completed data to the ICE.TM. base unit for tracing. If in "Format" mode, the formatting component synchronously aligns the completed data and its associated addressing information before transferring such information to the ICE.TM. base unit. In "Raw" mode, however, information from the electronic component is immediately transferred to the ICE.TM. base unit without alignment.