Odometers are extremely useful for cars, they tell you how far you have gone, wouldn’t it be nice if you were able to have a device that does the same for electrical current? The LTC4150 SparkFun Coulomb Counter Breakout is here to be your odometer for current. If you are wondering: a coulomb is defind as, to put it simply, one amp for one second. This breakout is capable of constantly monitoring the current your sensor is using, is able to add it up, and will give you a pulse each time a given amount of amp-hours have been used. When used effectively and if you start with a full battery, you’ll always know exactly how much of it is left!

سون سگمنت قرمز رنگ

Description
Three wires digital voltmeter,0.28" LED display,mini size,with reversal protection.
Measure voltage range 0-100V, need DC4-30V external power supply.

Features:
Functional set voltage meter in one, measuring current power from the measuring circuit, does not require a separate power supply isolated power supply, easy to use.
Affordable only 10 a few dollars you can have a fully functional voltage meter.
33V Variable Precision representatives : measuring stalls below 10V voltage measurement resolution of 0.01V, 10V with a resolution of more than 0.1V

Datasheet

Zero CJMCU-219 module is a drift with I2C interface, bi-directional current / power monitor integrated circuit (IC), and further expansion of the energy-saving electronic products TI camp. INA219 with the industry's highest accuracy and most compact size, not only to monitor the voltage drop across the shunt resistor, the sensing shunt supply voltage, while also calculating power. The device is available in a SOT23 package, available for digital current sensing small servers, laptops, power supply, battery management and automotive and telecommunications equipment, low-cost solutions.

Specifications:
on-board precision miniature voltage transformer
on-board high-precision op amp circuit, the signal for precise sampling and appropriate compensation function
the module can be measured within the 250V AC voltage corresponding to the output of the analog can be adjusted
PCB board size: 49.5 (mm) x19.4 (mm)
 

Specifications:
on-board precision miniature current transformer
on-board high-precision op amp circuit, the signal for precise sampling and appropriate compensation function
the module can measure less than 5A AC current, corresponding to the output of the analog can be adjusted
PCB board size: 38 (mm) x18.5 (mm)
 

Module description:
This module is based on the principle of a resistor divider design, enabling the terminal interface input voltage reduced five times, Arduino analog input voltage up to 5V, then the input voltage voltage detection module can not be greater than 5V × 5 = 25V (3.3V if used system, the input voltage can not be greater than 3.3Vx5 = 16.5V). Because Arduino AVR chips used in 10 AD, so the analog resolution of this module is 0.00489V (5V / 1023), so the minimum voltage detection module detects input voltage is 0.00489V × 5 = 0.02445V.

Description

Non-invasive AC current sensor (10A max)

Used for measuring alternating current

Ferrite core material

The SeeedStudio Non-Invasive AC Current Sensor (10A Max) are sensors that are used for measuring alternating current. They are particularly useful for measuring whole building electricity consumption (or generation for that matter). The split core type is particularly suitable for DIY use it can be clipped straight on to either the live or neutral wire coming into the building without having to do any high voltage electrical work

Description

• Non-invasive AC current sensor (25A max)
• Used for measuring alternating current
• Ferrite core material

Description

• Non-invasive AC current sensor (50A max)
• Used for measuring alternating current
• Ferrite core material

Description

• Non-invasive AC current sensor (20A max)
• Used for measuring alternating current
• Ferrite core material

Description

Non-invasive AC current sensor (15A max)

Used for measuring alternating current

Ferrite core material

The SeeedStudio Non-Invasive AC Current Sensor (15A Max) is a sensor used for measuring alternating current. It is particularly useful for measuring whole building electricity consumption (or generation for that matter). The split core type is particularly suitable for DIY use it can be clipped straight on to either the live or neutral wire coming into the building without having to do any high voltage electrical work

Description
                            Current sensor brick    
 Fast response and high sensitivity    
            Simple drive circuit   
    Stable and long life   

Description

• Non-invasive AC current sensor (70A max)
• Used for measuring alternating current
• Ferrite core material

Description

 .NET gadgeteer ACS712 current sensor
 Uses isolated magnetic field to measure current
 Includes one gadgeteer cable
 RoHS compliant

Description

• Non-invasive AC current sensor
• Input current: 0~60A AC
• Build-in sampling resistance (RL): 31Ω
• Dielectric strength: 1000V AC/1min 5mA

Description

• Economical method to monitor any AC electrical load
• Built-in current transducer
• Wire window accommodates up to AWG #2
• Calibrated for 0-100A AC
• RoHS compliant and Non Ratiometric

Description

• Comes in handy for measuring the output of sensors with 5V ranges
• Measures DC voltage from 0-5 volts with 2.5% accuracy
• Clear and easy to read scale and an adjustable dial
• Meter's Face: 45x45mm
• Mounting hole should be 38mm
• Overall depth: 35mm

Description

• Economical method to monitor any AC electrical load
• Built-in current transducer
• Wire Window accommodates up to AWG #2
• Calibrated for 0-25A AC
• RoHS compliant and Non Ratiometric

Description

• Low battery voltage alarm with high pitch warning sound
• Protects battery from over-discharge
• Input voltage: 7.4 ~ 16.8 volts
• Battery type: 2 ~ 4S LiPo