Real Time Touch



new TOP 200 Companies filing patents this week

new Companies with the Most Patent Filings (2010+)




Real Time Touch

Astec International Limited patents


Recent patent applications related to Astec International Limited. Astec International Limited is listed as an Agent/Assignee. Note: Astec International Limited may have other listings under different names/spellings. We're not affiliated with Astec International Limited, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Astec International Limited-related inventors


Power supplies having power switches controllable with a varying frequency, duty cycle and/or phase to regulate outputs

A switched mode dc-dc power supply includes a power circuit having an input for receiving an input voltage, an output for providing an output voltage, and four power switches coupled between the input and the output. The four power switches are arranged in a full bridge configuration. ... Astec International Limited

Transformers having screen layers to reduce common mode noise

According to some aspects of the present disclosure, transformers having a screen layer and corresponding methods of winding transformers and are disclosed. Example transformers include at least one transformer core, at least one primary winding layer wound about the transformer core, and at least one secondary winding layer wound about the transformer core. ... Astec International Limited

Circuit board assemblies having magnetic components

According to some aspects of the present disclosure, circuit board assemblies and methods of circuit board assembly are disclosed. Example circuit board assemblies include a circuit board and a magnetic component coupled to the circuit board. ... Astec International Limited

Methods of forming coils for inductive components

A method of forming a coil for an inductive component includes bending a conductor into a figure 8 configuration. The figure 8 configuration has opposite first and second ends, a first substantially rounded portion, and a second substantially rounded portion. ... Astec International Limited

Heat sink assemblies for surface mounted devices

According to some aspects of the present disclosure, heat sink assemblies are disclosed. Example heat sink assemblies include a printed circuit board having a first side and a second side. ... Astec International Limited

Control circuits for selectively applying error offsets to improve dynamic response in switching power converters

A control circuit for controlling a power circuit having a power switch includes a control loop configured to generate a control signal for the power switch of the power circuit based on an error signal determined by comparing a sensed parameter of the power circuit and a reference signal, and a positive offset signal and a negative offset signal each configured to adjust the control signal. The control circuit is configured to detect a change in an output current of the power circuit and selectively apply only one of the offset signals based on the change in the output current to adjust the control signal thereby enhancing a dynamic response to the change in the output current. ... Astec International Limited

Automatic transfer switch circuits and control methods

According to some aspects of the present disclosure, automatic transfer switch circuits and control methods are disclosed. Example automatic transfer switch circuits include a first voltage input having a line terminal and a neutral terminal, a second voltage input having a line terminal and a neutral terminal, a voltage output having a line output terminal and a neutral output terminal, a first relay coupled to the line terminal of the first voltage input and the line terminal of the second voltage input, a second relay coupled to the neutral terminal of the first voltage input and the neutral terminal of the second voltage input, a third relay coupled between the line output terminal and at least one of the first relay and second relay, a fourth relay coupled between the neutral output terminal and at least one of the first relay and the second relay, and a controller.. ... Astec International Limited

Multiple phase power converters having integrated magnetic cores for transformer and inductor windings

A multiphase dc/dc power converter includes a magnetic core having a plurality of core sections and defining a plurality of magnetic flux paths, and a plurality of winding including a plurality of transformer winding sets and a plurality of inductor windings. Each transformer winding set includes a primary winding and a secondary winding wound about at least one core section of the plurality of core sections. ... Astec International Limited

Switching power converters controlled with control signals having variable on-times

A control circuit is configured to sense an ac input voltage of a power factor correction (pfc) power circuit in a switching power converter, provide a control signal having an on-time and an off-time to at least one power switch of the pfc power circuit, and in response to detecting a peak voltage of the ac input voltage, increase the on-time of the control signal based on the sensed ac input voltage during an interval that begins with the peak voltage of the ac input voltage and ends with the next zero crossing following the peak voltage of the ac input voltage to improve a power factor of the switching power converter. Other example switching power converters, pfc power circuits and control circuits for controlling one or more power switches are also disclosed.. ... Astec International Limited

Input redundant circuit

An input redundant circuit according to the present disclosure may include: a core power supply unit; a first input port connected to a first input voltage; a second input port connected to a second input voltage; a relay unit connected to the first input port and the second input port to supply one of the first input voltage and the second input voltage to the core power supply unit; and a surge current limiting unit coupled to the relay unit, configured to limit a surge current generated when the relay unit is switched between the first input voltage and the second input voltage.. . ... Astec International Limited

Switch mode power supplies including primary side clamping circuits controlled based on secondary side signals

A switch mode power supply includes an input, an output, and a power converter coupled between the input and the output. The power converter includes a transformer having a primary side and a secondary side, and a clamping circuit. ... Astec International Limited

Power supplies and methods for reducing common mode noise

An example switched-mode power supply includes an input for receiving an input voltage from a voltage source, an output for providing an output voltage to a load, and a transformer having a primary winding, a secondary winding, and a conductive shield disposed between the primary winding and the secondary winding. The power supply also includes a neutralization signal generator circuit coupled to the conductive shield to apply a neutralization signal to the conductive shield to reduce a common mode noise between the primary winding and the secondary winding of the transformer. ... Astec International Limited

Power supplies having a single isolation device for feedback and fault detection

According to some aspects of the present disclosure, isolated power supplies and corresponding control methods are disclosed. Example isolated power supplies include a transformer, at least one power switch coupled to the transformer, a controller, an output terminal, and a feedback circuit coupled to the output terminal to sense the output voltage and compare the sensed output voltage to a voltage reference. ... Astec International Limited

Multiphase interleaved forward power converters including clamping circuits

A multiphase interleaved forward power converter includes two or more subconverters and two or more subconverters clamping circuits. Each subconverter includes an input, an output, and a transformer coupled between the input and the output. ... Astec International Limited

06/01/17 / #20170155332

Modifiable dc-dc power converters for providing different output voltages

A dc-dc power converter kit includes a body, a plurality of input connectors, and a plurality of output connectors. The body includes a plurality of inputs configured to couple to one another to form a power converter input, a plurality of outputs configured to couple to one another to form a power converter output, and a plurality of transformers. ... Astec International Limited

05/18/17 / #20170141678

Power factor correction stage control during start-up for efficient use of a negative temperature coefficient thermistor

A power factor correction (pfc) stage of a power supply unit has a pfc circuit including a rectifier circuit, a pfc controller circuit with a pfc switch, a current sensor connected to the pfc switch, a high frequency bypass capacitor connected between the pfc controller circuit and the rectifier circuit, and a bulk storage capacitor connected between the pfc controller circuit and an output of the pfc stage. The pfc stage also has a negative temperature coefficient thermistor connected in series with the pfc switch and the current sensor. ... Astec International Limited

04/20/17 / #20170111041

Methods for overdriving a base current of an emitter switched bipolar junction transistor and corresponding circuits

An emitter switched bipolar transistor circuit includes a bipolar junction transistor (bjt) having a collector coupled to an output terminal, a metal oxide semiconductor field effect transistor (mosfet) coupled to an emitter of the bjt, a bias voltage supply coupled to the base of the bjt, a buffer coupled to the base of the bjt, and a comparator. The comparator includes a first input coupled to the collector of the bjt, a second input coupled to a voltage reference, and an output coupled to an input of the buffer. ... Astec International Limited

04/13/17 / #20170104407

Control circuits and methods for transitioning between power converter control modes

A control circuit includes a first integrator circuit corresponding to a first mode and a second integrator circuit corresponding to a second mode. The control circuit is configured to transition control of the power converter between the first mode and the second mode such that one of the first mode and the second mode is a controlling mode for a period of time and the other one of the first mode and the second mode is a non-controlling mode for the period of time, and set an output of the first integrator circuit or the second integrator circuit corresponding to the non-controlling mode to equal an output of the first integrator circuit or the second integrator circuit corresponding to the controlling mode. ... Astec International Limited

04/13/17 / #20170104340

Constant current limiting protection for series coupled power supplies

A control circuit for controlling multiple power supplies having their outputs coupled in series is configured to in response to an output current reaching a defined current threshold of a power supply of the power supplies, control the power supply to operate in its constant current mode so that the output current is regulated at the defined current threshold as the remaining power supplies operate in their constant voltage mode, and in response to the output voltage of the power supply reaching a defined voltage threshold, control the power supply to operate in its constant voltage mode so that the power supply provides a first regulated output voltage to its output as the remaining power supplies provide a second regulated output voltage different than the first regulated output voltage to their output. Various other systems, power supplies, control circuit and methods are also disclosed.. ... Astec International Limited

02/23/17 / #20170054375

Fixed frequency discontinuous conduction mode flyback power converters employing zero voltage switching

A power supply system includes a flyback power converter and a control circuit coupled to the flyback power converter. The power converter includes an input, an output, a transformer having a plurality of windings coupled between the input and the output, a first power switch coupled to the transformer and a clamping circuit having a capacitor, a diode, and a second power switch coupled to one of the plurality of windings. ... Astec International Limited








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



###

This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. Freshpatents.com is not affiliated or associated with Astec International Limited in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Astec International Limited with additional patents listed. Browse our Agent directory for other possible listings. Page by FreshPatents.com

###