CN2243083Y

CN2243083Y - Domestic cell voltage measurer with multiple luminescent diode to indicate

Info

Publication number: CN2243083Y
Application number: CN 95246666
Authority: CN
Inventors: 曹诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-18
Filing date: 1995-12-18
Publication date: 1996-12-18
Anticipated expiration: 2005-12-18

Abstract

The utility model relates to a domestic cell voltage measurer with multiple luminescent diode to indicate which is used for measuring the cell voltage. The utility model is not provided with a power supply. The 2 terminal of a measuring range change-over switch K is connected with a resistance R1, and the 1 terminal of the switch K is connected with the resistance R2, R3 of a voltage transformation hoisting circuit and the 2 terminal of the electrical inductance L1. The 5 terminal of the electrical inductance L3 of the voltage transformation hoisting circuit is connected with the positive terminal of a luminous diode BG3, and the luminous diode BG3 is connected with a luminous display circuit in series. The 4 terminal of the electrical inductance L3 is connected with the negative terminal of the BG7. The common negative terminal of the circuits and the 3 terminal of the switch K are respectively connected with a measuring pawl, and the measuring pawl can be folded; so the cell voltage of different model numbers can be measured.

Description

Household batteries voltage measurement device with a plurality of diode displaying

Scope of the present utility model belongs to the measurement of cell voltage and display technique.

Existing household batteries measuring technique generally is to adopt electromagnetism pointer-type, or the display packing of chemical heat-sensitive type.And adopt passive luminotron to show, generally be to 6 volts or 9 volts of higher voltage batteries.

The purpose of this utility model is for using the electric equipment of various batteries, a kind of low cost is provided, and nothing includes power supply, indicates with light emitting diode, can be to various small-sized 1.5 volts of batteries and Voltaic battery, the perhaps small size home appliance that other supply voltages in this range ability are measured.

This device is the working power of tested battery as circuit, and bright according to five light emitting diodes of contacting mutually, puts out and luminous power, indicates tested battery from 0.6 volt to 1.5 volts respectively, perhaps from 3 volts to 9 volts change in voltage.Measuring junction adopts the folding measuring claw, to adapt to the common batteries of various models, the measurement of button cell and laminated cell.

Consult the Chinese patent in nearly ten years, there is no the battery voltage measurement device of this type.

This device mainly partly is made up of electronic circuit and measuring claw two.

Circuit mainly partly is made up of voltage transformation lifting and photoelectric display two partly as shown in Figure 1.

Voltage transformation promotes the LC bikini sine-wave oscillator that comes down to a low-voltage, by transformer T, is the dc voltage conversion of 0.6 volt to 1.5 volts of input tens volts alternating voltage, and drives five lumination of light emitting diode demonstrations that are in series.When tested voltage, when just circuit its own power source voltage changed, the amplitude and the frequency of sine-wave oscillator also changed, and booster tension is also changed thereupon, thereby drive the lumination of light emitting diode of diverse location, reach the purpose that the indication input voltage changes.

Below, index map 1, to the circuit working principle of this utility model, the effect of components and parts is explained in detail.

As shown in Figure 1, K is 1 * 2 miniature slide switch, when pushing 1 position, measures 1.5 volts of power supplys, pushes 2 positions, measures 9 volts of power supplys.When K switch is in 1 position, resistance R 2 is short-circuit resistances, guarantees that battery being not less than under 100 milliamperes of discharge conditions, measures cell voltage.By BG2, L1, L2 and C form inductance L C bikini oscillator, and starting of oscillation when input direct voltage is 0.6 volt to 1.5 volts is by the sinusoidal voltage of tens volts of L3 outputs.BG3 is light emitting diode and resistance R 4 to BG7, R5, and R6, the R7 mutual group becomes serially connected luminous display circuit.BG2 is a low-power transistor, as 9014 etc.Resistance R 3 and diode BG1 form the dc bias circuit of BG2, and BG1 plays temperature compensation function.The method of adjusting biasing resistor R3 is: import 1.5 volts of normal voltages, regulate R3, make BG3 bright entirely to the light emitting diode of BG7.According to the variation of input voltage, adjust R4 respectively again from 0.6 volt to 1.5 volts, R5, R6, the resistance of R7 makes it the lumination of light emitting diode of corresponding parallel connection.Display voltage is traditionally arranged to be 0.6 volt, and 0.8 volt, 1.0 volts, 1.2 volts, 1.5 volts five grades.Because measured cell voltage is exactly the operating voltage of circuit, in fact the internal resistance (discharge capability) of battery is also tested.Transformer T adopts ferritic small-sized ring-like magnet ring or E font magnetic core all can.Winding wire directly adopts diameter 0.07mm, hollow tread flaking coiling, and turn ratio is: L1=15, L2=30, L3=400.

When K switch is in 2 position, import 9 volts of normal voltages, regulate R1, make BG4 be in complete bright critical conditions to four light emitting diodes of BG7.

The battery of different model contacts with tested battery to import by the folding measuring claw and detects voltage.The structure wiring layout of folding measuring claw as shown in Figure 2.

Figure among Fig. 2 is symmetrical.Wherein 1 is circuit board, and 2 is measuring claw, and 3 is lead.Just be welded to circuit board respectively by lead 3 between 1,2, negative input end.5 is blind rivet, and 4 is the hollow shell fragment of garden shape.After the assembling, measuring claw 2 can be done the rotation of 180 degree round rivet 5 for the axle center.

Existing electromagnetism pointer-type battery voltage measurement device is compared on this utility model and the city's field boundary, is that a kind of to have a cost low, is not afraid of vibration, and volume is little, and the life-span is long, effective household batteries voltage measurement device.

Claims

1 one kinds of household batteries voltage measurement devices with a plurality of diode displaying, nothing includes power supply, and it comprises range shift switch, and voltage transformation promotes circuit, light emitting diode display circuit.And, detect the cell voltage of different model by the folding measuring claw, it is characterized in that the anode of 3 termination circuit of K switch, link to each other the end of 2 terminating resistor R1 of K switch, the negative terminal of another termination BG3 of R1 with measuring claw, the end of R4,1 terminating resistor R2 of K switch, the end of R3 and 2 ends of inductance L 1, the other end of R2 and the anode of BG1, the E end of BG2,4 ends of L3, the negative terminal of BG7 connect to form the public negative terminal of circuit jointly, and link to each other with measuring claw, resistance R 3 and BG1 form the dc bias circuit with temperature compensation, capacitor C, triode BG2, inductance L 1, L2 forms inductance connecting three point type, inductance L 1, L2, L3 forms step-up transformer T.Light emitting diode BG3, BG4, BG5, BG6, BG7 and resistance R 4, R5, R6, R7 form tandem luminotron display circuit, and continuous with 4,5 ends of inductance L 3.

2 household batteries voltage measurement devices according to a plurality of diode displaying of the described usefulness of claim 1, the public negative terminal that it is characterized in that the E utmost point connection circuit of triode BG1, the other end of B utmost point connecting resistance R3, the negative terminal of BG1 and an end of capacitor C, the C utmost point connects 1 end of inductance L 2, inductance L 2, L1 is in series, and common port is 2 ends, and connects 1 end of K switch.3 ends of another termination inductance L 1 of capacitor C, light emitting diode BG3, BG4, BG5, BG6 respectively with resistance R 4, R5, R6, the R7 parallel connection, and the positive pole of BG3 connects 5 ends of inductance L 3, and the negative pole of BG3 connects the positive pole of BG4, the negative pole of BG4 connects the positive pole of BG5, the negative pole of BG5 connects the positive pole of BG6, and the negative pole of BG6 connects the positive pole of BG7, the public negative terminal of the negative pole connection circuit of BG7.

The 3 household batteries voltage measurement devices according to a plurality of diode displaying of the described usefulness of claim 1 is characterized in that step-up transformer T is by inductance L 1, L2, and L3 forms.L1, L2 is in series, and adopts ferritic annular or E font magnetic core.

4 household batteries voltage measurement devices according to a plurality of diode displaying of the described usefulness of claim 1, it is characterized in that two measuring claws are fixed on circuit board or the shell, be connected with negative terminal with the anode of metering circuit respectively by lead, and measuring claw is rotatable folding.