 Piezoelectric buzzer |
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| Electrical connector for a microphone |
| An object, therefore, of the invention is to provide a new and improved electrical connector for ... |
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| Electrical connector having LED device |
| Accordingly, an objective of the present invention is to provide an electrical connector for input/... |
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| Connector with checking device |
| The objective of the present invention is to provide an electrical connector with a checking means ... |
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| Electrical connector with sensing terminal system |
| An object, therefore, of the invention is to provide a new and improved sensing terminal system for ... |
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| Electronic scale including a fault-detecting electronic display module |
| In accordance with the teachings of the present invention, an electronic scale including a fault-... |
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| Lock detecting structure of connector |
| With these problems in mind therefore, it is the object of the present invention to provide a lock ... |
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| Contact structure and production method thereof and probe contact assembly using same |
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| Load dependent control arrangements |
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Temperature responsive battery tester
| Details |
Inventors: Parker, Robert; Brass, Jack;
Assignee:
Primary Examiner: Kalafut; Stephen
Assistant Examiner:
Attorney, Agent or Firm: Renner, Otto, Boisselle & Sklar
A temperature responsive tester for measuring the voltage of a voltage source includes a temperature responsive display and an electrical element thermally coupled with the temperature responsive display for heating the temperature responsive display when a voltage exceeding a predetermined threshold level is impressed across the electrical element. Other embodiments of a voltage tester are disclosed. |
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DETAILED DESCRIPTION The battery tester of the present invention combines an electrical element, such as a zener diode, which exhibits a threshold conducting voltage with a temperature responsive display to permit accurate measurement of voltages and charges over a small range of battery voltages.
In accordance with one embodiment of the present invention, a device for measuring the voltage of a battery includes a temperature responsive material, a conductive heater for heating the temperature responsive material in response to an applied current, and a diode for applying a current from a battery to the conductive heater when the battery has a voltage exceeding a predetermined level.
In accordance with another aspect of the present invention, an apparatus for measuring the voltage of a voltage source includes a temperature responsive display, and an electrical element thermally coupled with the temperature responsive display for heating the temperature responsive display when a voltage impressed across the electrical element exceeds a predetermined threshold level.
In accordance with still another aspect of the invention, a device for testing a voltage source includes a temperature responsive display, and a diode thermally coupled with the temperature responsive display for hearing the temperature responsive display when the battery has a voltage exceeding a predetermined level.
In accordance with another aspect of the invention, a device for testing a voltage source includes a temperature responsive material having diodes thermally coupled with the temperature responsive material, each of the diodes heating a portion of the temperature responsive material when electrically coupled to a voltage source having voltage exceeding a predetermined level for each of the plurality of diodes.
In accordance with an additional aspect of the invention, a device for testing a voltage source includes a temperature responsive material, a diode in thermal contact with the temperature responsive material for heating the temperature responsive material when the voltage source has a voltage exceeding a predetermined level, and a conductive heater electrically in parallel with the diode for heating the temperature responsive material in response to an applied current
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Fuel Cells 
