current measurement

i want to design a circuit that limits the current range to provide protection against high current. I want to use a Schmitt trigger in this design. How can I do this? For example, I want to provide protection between 2 amperes and 15 amperes. When the current falls below 2 A, the circuit should...

I am working on a project that involves monitoring a cars battery. I can measure the voltage of it using a voltage sensor, a display and an arduino but that doesn't tell me much about the health of the battery. After researching, what seems to be the most popular way is putting a load onto the...

I have read different ways or reasons that could affect the measurement of multimeter readings. I am measuring resistance across a circuit at two points using a kelvin probe (Keithly 5808). I get different readings every time I take measurements of the same circuit in intervals of time. I tried...

Hi, I'm a rising freshman at Case Western University, and I would like to make an an electronic scooter to get around campus before I move in in about two months (mid august 2023). I already have a lot of the parts I would need for the project, like motors and motor controllers, among other...

Hi All, We are busy with a project that takes measurements from a Current Transformer (CT) to track current usage in attached appliances. The CT is connected through an amplifier circuit to a micro-controller ADC pin. The AC wave (positive cycle only) is sampled at 100us intervals (there are a...

Hi, I am currently trying to make an arduino based Power Meter. I will buy the SCT010T-D ct from YHDC. My question is the following. The ct says it has a DC 5v output at 5-10-20 etc Amps depending on the model. Does that mean the output is a sine wave with dc offset (which requires more...

Here's a circuit i've designed for measuring approximate current flowing through a mosfet. I have a uC that has no ADC, it only has a comparator and an internal bandgap reference voltage. So i can't just connect the drain to an ADC input and divide the voltage by Rmosfet. The line marked "PWM"...

Hi, I'm working on project which includes INA219 for sensing solar panel voltage and current. I have found other threads discussing on this matter but couldn't get answer I'm looking for. Instead of using any battery, I'm only looking to calculate current and Voltage from solar panel using...

Say there are 3 buses of: Bus 1: Slack bus with a voltage source of E=1.0 and phase of 0° Bus 2: a generator and a load. Bus 3: a load. The line impedance are given below: z12 = 0.05 + j0.1 z13 = 0.02 + j0.05 z23 = j0.05 z11 = -j100 z22 = infinity z33 = -j40 The generators and loads are given...

I am having issues finding a Variable current sensor switch that will precisely sense within the AC current ranges of 0-1 Amps (Test Range 0.001-0.2 Amps). Once the range of (0.001-0.2A) is sensed, I would like to trigger an alarm. Any suggestions on what I could use to sense such low AC currents?

Hello, I am new to hardware design. I am designing measurement circuit for Impedance Spectroscopy of electrochemistry cell. I need to measure the current coming from electrodes which have range from few milliamperes to few nanoamperes. as literature suggested, the equivalent circuit for...