Questions tagged [current-transformer]
The current-transformer tag has no usage guidance.
169
questions
0
votes
1
answer
68
views
Maximizing power transfer from 50Hz AC line via toroidal current transformer
This paper looked at ways of achieving high power-to-weight ratio for harvesting power from a 50Hz overhead line.
https://findresearcher.sdu.dk/ws/portalfiles/portal/250674676/...
1
vote
2
answers
85
views
How to sample current in high-kHz to low-MHz [closed]
I am working on a project that, at its simplest, is a switching circuit (either a half-bridge or single switch) connected to a resonant filter. I need a way to measure/sample the current going from ...
- 31
3
votes
0
answers
71
views
Current Transformer: Bifilar Fractional Turn fixed compensation explained
I'm a new design engineer at a company that manufactures current transformers. When we get requests for very high accuracy, high burden CTs with a lower turns ratio (usually 600:5 or less) we're ...
- 51
2
votes
0
answers
36
views
Connecting an energy meter with 6 CTs? [closed]
I want to install an energy meter to monitor the energy consumption of a transformer. The secondary side of this transformer is a parallel circuit, making it impossible to connect three current ...
- 21
0
votes
3
answers
55
views
current transducer Burden Resistor configurations
How will the current flow? Will it go from x1 to gnd and x2 to gnd---(Rb=30ohms)
or
x1 to x2 and x2 to x1 (Rb=60ohms) and when no current is flowing r1 and r2 will act as an pull-down resistor so ...
0
votes
0
answers
17
views
Power indicator circuit with overcurrent signaling
I'm seeking advice on a circuit I've developed through experimentation, patience, and determination.
While I have a technical education in electronics and electric systems from middle school, I'm not ...
0
votes
1
answer
57
views
Ground Fault Interrupter
I was trying to simulate a circuit where it can detect grounded neutral conditions in the household. I need to have a current transformer which can detect the current differential ans sends a signal ...
- 1
2
votes
2
answers
688
views
Measure very small current with Arduino? [closed]
I have to make a circuit/device in which i have to measure very small current in a wire carrying ac current.
In a given scenario, there will be a live wire carrying as low as 0.2A and as high as 100A. ...
- 222
0
votes
0
answers
50
views
Connecting +/-4V signal to ADC in microcontroller
I want to connect current transformer do the ADC input in microcontroller. The device have analog signal output (-4 to +4V) and ADC range is 0 to 3.3V
I have PCB according to the below scheme. Is the ...
- 41
0
votes
1
answer
166
views
Explanation of the circuit diagram of a PIR sensor activated light
Can someone please explain the operation of this circuit diagram of a PIR sensor led light.
The high voltage "ground" connections in the original diagram have been replaced with connections ...
0
votes
2
answers
88
views
163 A - 400 Hz CT Testing For Aviation Generator Application
What power supply equipment could I use to provide a 400 Hz, 163 A rms supply to support the testing of a wound Current Transformer installed to an aircraft power generator?
The test requirements are ...
- 1
0
votes
1
answer
51
views
How do I model domestic power demand and identify consumers by their resistive and reactive draw?
I put a commercially available 80 A current transformer on the live tail to my domestic fuse box. I obtain readings of current draw, supply voltage and power draw.
When an appliance is turned on I am ...
- 13
2
votes
1
answer
173
views
Components Used in an Opamp Circuit Measuring AC Voltage
Why do we use this capacitor in the opamp and why do we superimpose it on the DC voltage and then destroy it again with the capacitor?
I got some answers here, but as @SamGibson pointed out, I opened ...
- 33
1
vote
4
answers
436
views
Why do we use this capacitor in the opamp and why do we superimpose it on the DC voltage and then destroy it again with the capacitor?
I am interested in the ZMPT101B circuit and there are a few things I cannot understand.
This circuit is designed to measure AC Main voltages between 50Hz and 80-250V and to be read from an MCU like ...
- 33
0
votes
1
answer
123
views
Self-powered measurement unit for current transformer
A few days ago my friend told me his end-year project about a current transformer that capable of measure current with its own instrumentation. And some concept that we discussed confused me. Let's ...
- 73