IEEE Transactions on Communication and Electronics 

About: IEEE Transactions on Communication and Electronics is an academic journal. The journal publishes majorly in the area(s): Electromagnet & Electronic circuit. It has an ISSN identifier of 0536-1532. Over the lifetime, 151 publications have been published receiving 1549 citations.

The duobinary technique for high-speed data transmission

Abstract: A new data transmission technique has been evolved, which has the speed capability of the quaternary systems and, at the same time, promising performance. An important advantage of this technique is that the amount of circuitry required and the degree of complexity are relatively low, being not much more than for a straight binary system and much less than for a typical quaternary system. The process is sufficiently general so that it is applicable to serial transmission over wire lines and parallel transmission over high-frequency radio circuits.

Selected harmonic reduction in static D-C — A-C inverters

Abstract: An a-c voltage control technique is described that eliminates the third and fifth harmonic voltage present in the a-c load-voltage waveform of a 2-controlled-rectifier or transistor d-c to a-c single-phase inverter. The addition of two more controlled rectifiers or transistors to the basic circuit makes it possible to control the fundamental frequency component of the a-c load voltage from maximum to zero without reintroducing the third and fifth harmonics. The same technique can be used in a 12-controlled-rectifier or transistor d-c to 3-phase a-c inverter. In the case of the 3-phase inverter, the lowest harmonic of the fundamental frequency present in the line-to-line a-c voltage is the eleventh.

Four-terminal-pair networks as precision admittance and impedance standards

Abstract: THE DEVELOPMENT of suitable standards for the maintenance of impedance and admittance has been along two separate lines. One of these lines is based on the concept of 4-terminal measurement, which requires a standard to be provided with two current and two potential terminals. This technique has long been used with low d-c resistances, and may be applied directly to the measurement of small mutual inductances. The technique results in the elimination of uncertainties caused by variations in contact impedances. The other line of approach is applicable to very high impedances in which case even a very low stray admittance between the terminals could change appreciably the apparent impedance of the standard. The effect of stray admittances is eliminated by shielding the standard and making measurements in such a way that stray admittances to the shield are not included in the measurement. The technique is most often applied to the measurement of low capacitances; this standard is called a 3-terminal capacitor. The technique is also feasible for use with very high d-c resistances.

Techniques for the diagnosis of switching circuit failures

Abstract: In 2.12 minutes an IBM 7090 program found four input tests (for an 8-input parity check circuit) whose outcome determines whether any one of 102 possible failures occurred. For any single-output combinational circuit, with no more than 35 input variables, the program computes the set of all inputs detecting a given failure - the essential novelty of the method. These sets, one for each failure, are then Processed to find a (small) subset of tests which detect any failure. The underlying method extends to the diagnosis of circuits with feedback.

SCR inverter commutated by an auxiliary impulse

Abstract: THE KEY to efficient inverter circuits, using silicon controlled rectifiers (SCR's), is the method of commutation — the process of transferring current from one controlled rectifier to another. When feedback rectifiers are used to provide an alternative path for reactive load current, the size of the commutating components can be greatly reduced,1 and the commutation transient takes the form of an impulse. This impulse must be large enough to extinguish the current in the conducting controlled rectifier and long enough to provide inverse voltage for the required turn-off time. In many inverters,1 commutation is initiated by turning on the controlled rectifier that is complementary to the one being turned off. This paper describes a new circuit in which the commutating impulse is initiated by gating auxiliary controlled rectifiers. The inductance-capacitance (LC) pulse circuit is separate from the main power circuit except during commutation.