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!

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

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.

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.

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

Description

• Simple carrier for Allegro's 30A ACS715 Hall effect-based linear current sensor
• Accepts unidirectional current input upto 30A
• Output sensitivity: 133 mV/A
• High accuracy and reliability
• Operating temperature: -40°C to 150°C
• Logic voltage: 4.5V - 5.5V
• 80kHz bandwith

Description

• Current sense: 0.066 V/A
• Effect based linear current sensor
• logic voltage: 4.5 V - 5.5 V
• Supply current: 13 mA
• Two mounting holes on the logic side

Description

• Non-invasive AC current sensor (100A max)
• Output mode: 0-50mA
• Opening size: 13mm x 13mm
• Leading wire: 1m

Description

• Non-invasive AC current sensor (30A max)
• Output mode: Voltage/1V
• Opening size: 13mm x 13mm
• Leading wire: 1.5m

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

• Economical method to monitor any AC electrical load
• Built-in current transducer
• Wire window accommodates up to AWG #2
• Calibrated for 0-10A AC
• RoHS compliant and Non Ratiometric

 سنسور CSNE151-100 که درواقع یک سنسور جریان حلقه بسته می­ باشد بر اساس اصل اثر هال (Hall Effect) و متد فلو مغناطیسی صفر (سیستم فیدبک) عمل می­ نماید. به این معنا که فلو مغناطیسی همواره در مرکز سنسور در سطح صفر حفظ می­ گردد. به زبان ساده­ تر عملکرد سنسور اینگونه است که جریان اصلی از سیم­ پیچ اولیه عبور کرده و نسبتی از این جریان که متناسب با تعداد دور سیم ­پیچ ثانویه است در خروجی سنسور ظاهر می­گردد. حال از این جریان ایجاد شده جهت بالانس کردن هسته سنسور استفاده شده و در واقع بدین ترتیب یک حلقه بسته تشکیل می­گردد. این جریان حلقه بسته می تواند در خروجی سنسور توسط یک مقاومت به ولتاژ تبدیل شده و توسط یک پردازنده اندازه ­گیری شود.

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