Works as expected. Starts working at a supply voltage of 3.3V. It then draws 6.4 mA. At 5V supply the consumption is 10 mA and it remains at 10 mA up to at least 30V. Accuracy is not the best. For 3.3V with 3.3V supply voltage the error was 12%. For voltage above 4V the accuracy is about 1%, it is however trimmable by some trimpots that are accessible.
Works as expected. Starts working at a supply voltage of 3.3V. It then draws 6.4 mA. At 5V supply the consumption is 10 mA and it remains at 10 mA up to at least 30V. Accuracy is not the best. For 3.3V with 3.3V supply voltage the error was 12%. For voltage above 4V the accuracy is about 1%, it is however trimmable by some trimpots that are accessible.
Works as expected. Starts working at a supply voltage of 3.3V. It then draws 6.4 mA. At 5V supply the consumption is 10 mA and it remains at 10 mA up to at least 30V. Accuracy is not the best. For 3.3V with 3.3V supply voltage the error was 12%. For voltage above 4V the accuracy is about 1%, it is however trimmable by some trimpots that are accessible.
заводская калибровка тока оказалась просто прекрасна - отклонений нет во всем диапазоне. шунт 5 мОм. По напряжению шкала нелинейная - низкие напряжения занижает, высокие завышает (вместо 5,7 показывает 5,6В ; вместо 24.1 показывает 24.3 В ). Замеры проводились при внешнем питании 5В. Скорость обновления невысокая, около двух раз в секунду.
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the factory current calibration was just fine - there are no deviations in the entire range. shunt of 5 mω. The voltage scale is non-linear - low voltages are underestimated, high voltages are overstated (instead of 5.7, it shows 5.6 V; instead of 24.1, it shows 24.3 V). Measurements were carried out with an external power supply of 5V. The update rate is low, about two times per second.
The factory calibration of the current turned out to be just fine - there are no deviations in the whole range. Shunt 5m. Non-linear scale - low voltages underestimate, high voltages overestimate (instead of 5.7 shows 5.6V; instead of 24.1 shows 24.3 In ). Measurements were made with external power supply of 5V. The refresh rate is low, about twice per second.
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the factory current calibration was just fine - there are no deviations in the entire range. shunt of 5 mω. The voltage scale is non-linear - low voltages are underestimated, high voltages are overstated (instead of 5.7, it shows 5.6 V; instead of 24.1, it shows 24.3 V). Measurements were carried out with an external power supply of 5V. The update rate is low, about two times per second.
The factory calibration of the current turned out to be just fine - there are no deviations in the whole range. Shunt 5m. Non-linear scale - low voltages underestimate, high voltages overestimate (instead of 5.7 shows 5.6V; instead of 24.1 shows 24.3 In ). Measurements were made with external power supply of 5V. The refresh rate is low, about twice per second.
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the factory current calibration was just fine - there are no deviations in the entire range. shunt of 5 mω. The voltage scale is non-linear - low voltages are underestimated, high voltages are overstated (instead of 5.7, it shows 5.6 V; instead of 24.1, it shows 24.3 V). Measurements were carried out with an external power supply of 5V. The update rate is low, about two times per second.
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0
Q:
Does this meter sense DC current on its own, or does it need an external shunt? THANK YOU!!!
Does this meter sense DC current on its own, or does it need an external shunt? THANK YOU!!!
The wiring diagrams depicted are ( plus) common. Is there any (-) common wiring configuration? To place meter voltage / current on a twin voltage supply (one meter for each output voltage / current) I'd prefer a (-) common configuration so the (-) negative outputs are common.
The wiring diagrams depicted are ( plus) common. Is there any (-) common wiring configuration? To place meter voltage / current on a twin voltage supply (one meter for each output voltage / current) I'd prefer a (-) common configuration so the (-) negative outputs are common.
https://www.banggood.com/Geekcreit-Mini-Digital-Voltmeter-Ammeter-DC-100V-10A-Voltmeter-Current-Meter-Tester-BlueRed-Dual-LED-Display-p-1416489.html?cur_warehouse=CN In the picture below the description
https://www.banggood.com/Geekcreit-Mini-Digital-Voltmeter-Ammeter-DC-100V-10A-Voltmeter-Current-Meter-Tester-BlueRed-Dual-LED-Display-p-1416489.html?cur_warehouse=CN In the picture below the description
Answered by wujiahui on 24/04/2019Helpful (0)
0
Q:
Do you have a wiring diagram of the Volt/Amp meter?
Do you have a wiring diagram of the Volt/Amp meter?
There are diagrams in the product description. Thin red and black supply operating power to the meter. Thick red and black connect to the circuit being measured for voltage. The third thin wire (white or yellow) connects to the measured circuit, to read current.
There are diagrams in the product description. Thin red and black supply operating power to the meter. Thick red and black connect to the circuit being measured for voltage. The third thin wire (white or yellow) connects to the measured circuit, to read current.
Answered by Grumblydore on 28/02/2022Helpful (0)
0
Q:
Is it useful to connect to the electricity of the car
Is it useful to connect to the electricity of the car
ThePSU that powers the unit can be independent from the power source you are measuring if that's what you mean! But generally I think components like this are meant to be part of a designed system that utilises the same PSU. It depends on your application!
ThePSU that powers the unit can be independent from the power source you are measuring if that's what you mean! But generally I think components like this are meant to be part of a designed system that utilises the same PSU. It depends on your application!
I don't see the electrical drawing anywhere under the product description. Exactly where is added to the Internet wiring diagram? What link is it currently available on?
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I don't know the difference between them and them description. Does WHERE is the wiring chart on the Internet? What link is available?
Sehol nem látom az elektromos rajzot a termék leírása alatt. Pontosan HOL van hozzá az interneten bekötési rajz? Milyen linken érhető el aktuálisan?
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I don't see the electrical drawing anywhere under the product description. Exactly WHERE is the wiring diagram on the Internet? What link is currently available?
Click the link that says “See all description”. The connection diagrams showing how to use this tester to monitor a circuit are there.
However, perhaps what you are really asking for, is a circuit diagram of the tester itself? I don’t think the manufacturer is going to give you that detail.
Click the link that says “See all description”. The connection diagrams showing how to use this tester to monitor a circuit are there.
However, perhaps what you are really asking for, is a circuit diagram of the tester itself? I don’t think the manufacturer is going to give you that detail.
Answered by Grumblydore on 15/03/2022Helpful (0)
0
Q:
No hint where to find a schematic helped me, but I finally got it working, with the only problem that the voltage is tent times too low (0.14 instead of 14.?V). Is it possible to adjust that?
No hint where to find a schematic helped me, but I finally got it working, with the only problem that the voltage is tent times too low (0.14 instead of 14.?V). Is it possible to adjust that?