Showing papers on "Converters published in 1969"
Patent•
22 Jul 1969
TL;DR: In this paper, the authors present a CIRCULATING or CYCLIC DEVICE, for converting analog data to digital form, and a CAPACITIVE TRANSFER TECHNIQUE is provided for ACCOMPLISHING SUCH CONVERSION.
Abstract: IN A CIRCULATING OR CYCLIC DEVICE, FOR CONVERTING ANALOG DATA TO DIGITAL FORM, A CAPACITIVE TRANSFER TECHNIQUE IS PROVIDED FOR ACCOMPLISHING SUCH CONVERSION. IN ADDITION, A CAPACITIVEREFERENCE VOLTAGE SWITCHING TECHNIQUE, PARTICULARLY FOR CYCLIC CONVERTERS IS PROVIDED FOR PRESENTING A BIPOLAR REFERENCE SWITCHING EFFECT UTILIZING A UNIPOLAR REFERENCE.
15 citations
TL;DR: Several basic circuits for log and antilog generators, with differently weighted operating characteristics, are analyzed and, applications are described in this paper, where several basic circuits with different operating characteristics are compared.
Abstract: Logarithmic converters have an important place in signal processing and the bipolar transistor can be an invaluable element for generating such functions. As with most any design, there are tradeoffs. With logarithmic converters composed of bipolar transistors, response time must be weighted against dynamic range. Several basic circuits for log and antilog generators, with differently weighted operating characteristics, are analyzed and, applications are described.
14 citations
01 Aug 1969
TL;DR: In this paper, the behavior of commonly used materials when excited with square wave power was studied for use in static inverters and converters, and suitable data on the behavior was provided.
Abstract: Program studies materials for use in static inverters and converters. It gives suitable data on the behavior of commonly used materials when excited with square wave power.
7 citations
Proceedings Article•
01 Jan 1969
TL;DR: Modularized static AC and DC inverters and converters for aerospace electrical power conditioning systems, discussing circuit functions and performance tests as mentioned in this paper, are discussed in Section 2.1.
Abstract: Modularized static AC and DC inverters and converters for aerospace electrical power conditioning systems, discussing circuit functions and performance tests
4 citations
Patent•
25 Apr 1969
TL;DR: In this paper, a function generator as used in an analog computer and employing a pair of digital to analog converters having outputs connected in summing relation is described, and circuit means connected with the converters to drive the output of one converter back and forth between function and reference values.
Abstract: The disclosure concerns a function generator as used in an analog computer and employing a pair of digital to analog converters having outputs connected in summing relation; and circuit means connected with the converters to drive the output of one converter back and forth between function and reference values, and further characterized in that the output of one converter increases while the output of the other converter decreases, and vice versa.
4 citations
Patent•
03 Feb 1969
TL;DR: A hybrid digital-to-analogue function generator for generating analogue voltages which are nonlinear functions of an input digital number was proposed in this article, where the function generator uses digital to analogue converters which have two reference voltage inputs, Eo greater than Ei, the output voltage of each converter being defined as:
Abstract: A hybrid digital-to-analogue function generator for generating analogue voltages which are nonlinear functions of an input digital number. The function generator uses digital-to-analogue converters which have two reference voltage inputs, Eo greater than Ei, the output voltage of each converter being defined as:
3 citations
01 Jan 1969
TL;DR: In this article, the development of static inverters or converters operating electrically in parallel for space vehicle applications is discussed, and a static inverter or converter operating in parallel is proposed.
Abstract: Development of static inverters or converters operating electrically in parallel for space vehicle applications
2 citations
TL;DR: In this article, the advantages of reduction in size and the elimination of audible noise have given designers the incentive to increase the frequency of operation of inverters and converters to the limit of the capabilities of available power transistors.
Abstract: Inverters and converters with large power output capabilities are presently being operated at frequencies above the audible band. The advantages of reduction in size and the elimination of audible noise have given designers the incentive to increase the frequency of operation of inverters and converters to the limit of the capabilities of available power transistors.
1 citations
Patent•
03 Jan 1969TL;DR: In this article, an improved CIRCUIT for PROTECTING ELECTRIC POWER CONVERTERS from Commutation FAILURE is presented. But, it does not provide any means for direct detection of the actual MARGIN of an ELECTRIC power converter.
Abstract: IN THIS IMPROVED CIRCUIT FOR PROTECTING ELECTRIC POWER CONVERTERS FROM COMMUTATION FAILURE, SUITABLE MEANS IS PROVIDED FOR DIRECTLY DETECTING THE ACTUAL MARGIN OF AN ELECTRIC POWER CONVERTER AND FOR COMPARING THE DETECTED ANGLE WITH A GIVEN REFERENCE IN ORDER TO INITIATE MARGIN ANGLE INCREASING MEASURES IF THE DETECTED ANGLE IS UNDERSIZE.
TL;DR: In this paper, a new class of generalized impedance converters (GIC) consisting of generalized positive and negative converters is defined and realized using operational amplifiers and passive elements.
Abstract: A new class of generalized impedance converters (GIC) consisting of generalized positive and negative impedance converters is defined and realized using operational amplifiers and passive elements. An example is included to illustrate their use in network synthesis.