CN2050623U - Wmt-type measuring instrument for electronic clock - Google Patents
Wmt-type measuring instrument for electronic clock Download PDFInfo
- Publication number
- CN2050623U CN2050623U CN88207667U CN88207667U CN2050623U CN 2050623 U CN2050623 U CN 2050623U CN 88207667 U CN88207667 U CN 88207667U CN 88207667 U CN88207667 U CN 88207667U CN 2050623 U CN2050623 U CN 2050623U
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- resistance
- power supply
- measuring instrument
- circuit
- wiring board
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Abstract
The utility model discloses a 'quartz electronic watch maintenance detector' which can be used as a power supply and is provided with various grades. The function is all suitable for quartz clocks, and the WMT-typed measuring instrument for electronic clock is capable of measuring the functional parameters, such as power consumption current, voltage of battery, motor coil resistance and circuit board in quartz watch trouble maintenance process. The utility model can integrate power supply self-checking and measurement function into one body in the measuring instrument. The utility model has the advantage of simple operation and convenient operation.
Description
The utility model relates to a kind of being exclusively used in quartz analog clock, the table breakdown maintenance the measurement indicating device of static current of lcd, cell voltage, motor coil resistance and wiring board functional parameter.Especially power self test in a kind of self-powered static current of lcd, DC voltage, resistance, wiring board functional parameter and the measuring instrument, five kinds of clock, table maintenance measurement mechanisms that function is integrated in one.
At present, shortage is a kind of on the market can adapt to quartz clock, especially the little power consumption of quartz watch, weak signal and relevant with it cell voltage, the survey instrument that the coil resistance measurement function is integrated in one, the common multimeter of selling on the market only can be done the measurement of cell voltage, coil resistance, because its function and precision, to the main unit for electrical property parameters of quartz clock: static current of lcd and wiring board functional parameter then can't be measured, and bring difficulty often for electronic watch maintenance personal fault analysis.Because quartz clock is different from mechanical clock, mainly be machinery part in addition; Can just can find failure cause by rule of thumb or by means of magnifier, electronic watch then will lean on the foundation of every unit for electrical property parameters as fault analysis.
The purpose of this utility model provides a kind of measurement mechanism that the electronic watch maintenance personal is integrated in one to power self test function in quiescent current, dynamic pulse circuit average value current, wiring board functional parameter, cell voltage, motor coil resistance and the measuring instrument of fault quartz electronic clock and watch that is exclusively used in.The repertoire class all is applicable to the electronic watch maintenance, also is applicable to the test of electronic watch manufacturer assembly process fault clock and watch.This device is self-powered.Indicate the numerical value that needs to survey parameter when providing power supply to tested movement during measurement.By these parameters, then can analyze the problem that the fault clock and watch exist at aspects such as train, motor, coil, wiring board or batteries easily, maintenance personal's fault is got rid of provides convenience.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model circuit theory diagrams.
Fig. 2 is the utility model outward appearance front view.
1, the measurement of static current of lcd: at first with waver K
1, K
2Pull K
11, K
21Position, 20 μ A gauge outfit M and 220 μ f electrochemical capacitor C at this moment
2The back that is in parallel is connected in series with 1.5 volts power supply E, its just (+) bear (-) output terminal and can replace power supply to receive the power input of Quartzcrystal watch movement to be measured, then can indicate the numerical value of static current of lcd, the capacitor C of parallel connection by gauge outfit
2, can make pulse current become a current average indication stably on gauge outfit.This moment, gauge outfit full scale indicated value was 20 μ A, and general quartz watch dynamic duty electric current is in 1～3 μ A scope, when waver is pulled K
12, K
22During the position, gauge outfit M parallel connection the shunt resistance of one 550 Ω (by 1
KVariable resistor is set up) R
6, make meter range expanded range to 0～200 μ A, again with 1000 μ f electrochemical capacitor C
1Back in parallel is connected in series mutually with 1.5 volts of power supply E, has formed the metering circuit to the quartz clock movement static current of lcd.General crystal clock static current of lcd is in 100～200 μ A scopes.
2, the measurement of DC voltage: when waver is pulled to K
13, K
23The time, gauge outfit M and 95.05
KResistance is (by 100
KVariable resistor is set up) R
7Be in series, formed full scale and be 2 volts dc voltage measurement circuit.This grade can be used for the voltage determination of various 1～No. 5 dry cell of crystal clock and all kinds of table usefulness button cell.
3, the measurement of resistance: waver is pulled K
14, K
24The time, the resistance zero potentiometer W of the 470 Ω back of connecting with the resistance R 5 of 51 Ω is in parallel with gauge outfit M, again by potentiometer intermediate point and 890 Ω resistance (by 1
KVariable resistor is set up) R
3, just to have formed the center resistance behind 1.5 volts of power supply E series connection backs be 1
KResistance measuring circuit, these shelves are mainly used to measure clock, table motor coil resistance.The coil direct current resistance of general quartz watch is in 2～4K scope, and the crystal clock coil resistance is in 300～500 Ω scopes, and adopting the center resistance is 1
KRange ability can satisfy simultaneously the measurement requirement of crystal clock and quartz watch motor coil preferably.
4, the mensuration of wiring board functional parameter: when waver is pulled to K
15, K
25The time, gauge outfit M and 1.2K resistance R
4Back and 20K resistance R are in parallel
1, 1.5 volts of power supply E are connected in series mutually, its output terminal can be used as the input end that power supply is applied to wiring board to be measured, this moment is the size of wiring board static working current as can be seen, in 2 of the pulse outputs of the measuring instrument output plus terminal being received wiring board respectively, then will produce per 2 seconds pulse signals once respectively, two output points all should be like this, and functions is normal, otherwise the explanation wiring board damages.
5, power self test in the measuring instrument: except that the dc voltage measurement shelves do not need in the power supply, all the other functions are usefulness all, in order to keep measuring accuracy, needs often internal power supply to advance to check, during self check waver is pulled K in above-mentioned all class
16, K
26Position, gauge outfit M and 95.05 at this moment
KResistance R
2Be in series, when two test pencils join, will have formed the dc voltage measurement loop of internal power supply E.Its range is identical with the dc voltage measurement shelves, and full scale is 2 volts, is lower than 1.4 volts as indicated value, then the battery that need more renew.
Claims (5)
1, quartz analog clock, electronic watch special measurement instrument that is integrated in one by static current of lcd, DC voltage, resistance, wiring board functional parameter and interior power self test measurement function, it is characterized in that: except that shelves of direct voltage, all the other five grades: 20uA, 200uA current gear, resistance, table are made the power supply of measuring instrument with all use inner 1.5 volts of batteries with wiring board and self-checking function.
2, table according to claim 1 is characterized in that: connecting with interior power supply after little electric current gauge outfit and the electrochemical capacitor parallel connection forms the metering circuit of a pulsing circuit current average again.
3, table according to claim 1 is characterized in that: little electric current gauge outfit is connected with resistance, interior power supply with resistance formation in parallel shunt circuit again and is formed the metering circuit of his-and-hers watches with the wiring board functional parameter.
4, table according to claim 1 is characterized in that: power self test circuit in the formed measuring instrument after little electric current gauge outfit is connected with resistance, interior power supply and two test pencils link to each other.
5, according to claim 2,3, the 4 clock and watch unit for electrical property parameters measurement mechanisms that described circuit impressed DC voltage is measured, the resistance measurement function is integrated in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88207667U CN2050623U (en) | 1988-06-24 | 1988-06-24 | Wmt-type measuring instrument for electronic clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88207667U CN2050623U (en) | 1988-06-24 | 1988-06-24 | Wmt-type measuring instrument for electronic clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050623U true CN2050623U (en) | 1990-01-03 |
Family
ID=4841649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88207667U Pending CN2050623U (en) | 1988-06-24 | 1988-06-24 | Wmt-type measuring instrument for electronic clock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873666A (en) * | 2018-07-28 | 2018-11-23 | 江西省东龙实业股份有限公司 | A kind of detection timepiece movement current tester |
-
1988
- 1988-06-24 CN CN88207667U patent/CN2050623U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108873666A (en) * | 2018-07-28 | 2018-11-23 | 江西省东龙实业股份有限公司 | A kind of detection timepiece movement current tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |