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7506180 |
System and method for determining the power drawn from a switching power supply by counting the number of times a switching power supply switch is enabled
Embodiments of a switching power supply circuit are disclosed wherein the number of times that a switch of the circuit is enabled is counted.
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7466150 |
Apparatus and method for generating a power signal from a load current
An apparatus for generating a power signal from a load current is described, has a controller with a load current input, a load current output, an intermediate signal output, and a status signal...
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7459886 |
Combined LDO regulator and battery charger
A method and circuit for simultaneously charging a battery and providing supply voltage to a load. The circuit includes a low-drop-out voltage (LDO) regulator and a constant-current,...
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7443155 |
Voltage detecting apparatus
A voltage detecting apparatus with a capacitor having a switch for detecting a voltage of a direct-current power source, which can detect a malfunction of the switch without additional parts and...
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7397229 |
Switch mode power circuit
There is provided a switch mode power supply circuit including at least one inductive component coupled to an associated switching device for cyclically connecting the inductive component to a...
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7191348 |
Transition detection at input of integrated circuit device
An integrated circuit has an input connection for connecting an external signal conductor that passes signals to execute functions in the device. The external signal conductor can pick up strong...
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6894501 |
Selecting multiple settings for an integrated circuit function using a single integrated circuit terminal
A method and apparatus for determining a setting specified from a plurality of the settings for a function provided in an integrated circuit, wherein the setting is specified by connecting an...
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6803768 |
Method for generating a fault signal in a voltage regulator and corresponding control circuitry for a system voltage regulator
A method for generating a fault signal in a system voltage regulator by a phase signal includes detecting the system voltage and phase signal; comparing the system voltage and phase signal with...
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6614231 |
High efficiency electronic load
A high efficiency electronic load has a switch mode power factor corrected (PFC) input rectifier circuit that provides a high voltage positive and negative direct current (DC) voltage to drive a...
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6580783 |
2nd level power fault testing apparatus for testing telecommunications equipment
A power fault testing apparatus for testing telecommunications equipment interfaces to Telcordia's 2 nd Level AC power fault standards. The apparatus is powered by a three-phase 480 VAC, 600 A...
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6534990 |
Voltage regulator wake up control using frequency detection
A generator wake-up system that transitions the voltage regulator from a low power, sleep mode to full voltage regulation mode when the wake-up system detects and confirms a valid frequency of...
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6518735 |
Method and apparatus for measuring pure resistance of in-vehicle battery
In an apparatus for measuring a pure resistance of an in-vehicle battery, a terminal voltage and a discharging current of the battery are measured when the discharging current flows from the...
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6367039 |
Method and apparatus for testing adjustment of a circuit parameter
A voltage regulator is disclosed which is coupled with a programmable trimming circuit by a trim test circuit. When disabled, the trim test circuit passes the logic states of the signals produced...
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6017017 |
Process and apparatus for the recognition of the state of a solenoid valve
A method and apparatus for the recognition of the state of a solenoid valve supplies an on/off control switching current to the coil of the solenoid valve. A high level of current is caused to flow...
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5751603 |
Asymmetrical power supply
An active asymmetrical power supply comprising a power supply, a load sensor and a voltage reference selection circuit. The load current sensor preferably, is coupled between the power supply and a...
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5737199 |
Fail Check Device and method for switching signal lines
A fail check device and method for switching signal lines, wherein PWM signals are sent out onto PWM signal lines through a PWM signal output/survey circuit. Based on the level of the PWM signals...
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5500806 |
Data logging in a voltage regulator controller
A voltage regulator controller including three types of data logs which are operator selectable and configurable. An operator can enable data logging to occur at specific times and intervals. The...
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4562548 |
Alarm limit recentering arrangement for maintaining uniform alarm limit tolerances about a sloping regulation characteristic
A microcomputer surveillance system is operative to monitor the output signal of a power supply to determine if an alarm limit has been reached and to center the alarm limits around an operating...
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4471308 |
Method of diagnosing component failure in a DC voltage regulator
The determination of specific faulty components in an automotive type DC voltage regulator is accomplished by detecting the presence or absence of harmonic frequencies, of the base operating...
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4369407 |
Regulator tester
Testing appartus and method for testing a regulator for switching current to an external load device in response to applied voltage, e.g., field current of an alternator. This tester is arranged to...
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4222005 |
Testing device for generator output voltage regulators
There is disclosed a testing device for a voltage regulator incorporated in a generator assembly for controlling the output voltage of the generator assembly to a predetermined value, the generator...
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3947757 |
Voltage regulator tester
A test circuit for automotive voltage regulators includes means for simulating transient battery voltages, a meter for monitoring these voltages as related to the operation of the regulator being...
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3936744 |
Automotive alternator and solid state regulator tester
A tester for a solid state voltage regulator includes two parallel branches available for interconnection to the two output contacts of the voltage regulator. The two branches both interconnect to...
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3898561 |
Tester for electrical devices
A tester for automobile-type solid state voltage regulators which provides normal and extreme operating condition tests, such as a low temperature-high current test, a high temperature and current...
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3599094 |
TESTER FOR STORAGE BATTERIES AND VOLTAGE REGULATORS INCLUDING DIFFERENTIAL VOLTAGE INDICATOR AND NULL ADJUSTING MEANS
Apparatus for checking the go no-go condition of a storage battery under load and the proper setting of a vehicle voltage regulator. The tester indicates which of two sections of a battery is...
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3437916 |
THREE LIGHT TESTING ARRANGEMENT FOR TESTING THE VOLTAGE OUTPUT OF AUTOMOBILE VOLTAGE REGULATORS
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3408562 |
Temperature compensated tester for voltage regulators
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3142797 |
Test apparatus for automobile generators, alternators and voltage regulators
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3058062 |
Composite electrical test instruments
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3007108 |
Control panel system
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2957138 |
Voltage regulator adjustor
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2956226 |
Mine test set
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2826737 |
Generator and regulator tester
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2780777 |
Test apparatus for electrical systems
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