Circuit for checking the voltage of batteries

a battery and circuit technology, applied in the field of circuits for checking the voltage of batteries, can solve problems such as inconvenience for users

Inactive Publication Date: 2012-09-27
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It may be inconvenient for users.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0009]Referring to FIG. 1, a circuit is provided for checking the voltage of a battery 1, and warning users when the voltage of the battery 1 is less than a preset value. the circuit includes a Zener shunt regulator W, a pnp type transistor Q1, an npn type transistor Q2, a diode D1, a light emitting diode (LED) D2, and resistors R1-R7.

[0010]A cathode of the Zener shunt regulator W is connected to a positive pole of the battery 1 through the resistor R1. A reference terminal of the Zener shunt regulator W is connected to a base of the transistor Q1 through the resistor R2, and is connected to the positive pole of the battery 1 through the resistor R3. The reference terminal of the Zener shunt regulator W is further connected to a cathode of the Zener shunt regulator W. An anode of the Zener shunt regulator W is grounded. The base of the transistor Q1 is grounded through the resistor R4. An emitter of the transistor Q1 is connected to a cathode of the diode D1. A collector of the tran...

second embodiment

[0016]Referring to FIG. 2, a circuit includes a Zener shunt regulator W, a pnp type transistor Q1, an npn type transistor Q2, a diode D1, resistors R1-R7, and a buzzer F. When the voltage of the battery 1 is less than the preset value, the buzzer F works to warn the users. In addition, the LED D2 or the buzzer F can be replaced with other alarms.

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Abstract

A circuit is for checking the voltage of a battery. The circuit includes a regulator component, a pnp type transistor, an npn transistor, a diode, and an alarm. The circuit activates an alarm when the voltage of the battery is less than a preset value.

Description

BACKGROUND[0001]1. Technical Field[0002]The present disclosure relates to a circuit for checking the voltage of a battery.[0003]2. Description of Related Art[0004]For most electronic devices, users hardly know whether a battery needs to be replaced unless the battery is exhausted. It may be inconvenient for users.BRIEF DESCRIPTION OF THE DRAWINGS[0005]Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.[0006]FIG. 1 is a circuit diagram of a first exemplary embodiment of a circuit for checking the voltage of a battery.[0007]FIG. 2 is a circuit diagram of a second exemplary embodiment of a circuit for checking the voltage of a battery.DETAILED DESCRIPTION[...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01N27/416G10K9/12G08B5/36
CPCG01R19/0084G01R31/3682G01R31/362G01R31/3646G01R31/3835
Inventor HUANG, YONG-ZHAO
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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