Questions tagged [current-signal]
The current-signal tag has no usage guidance.
16
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Implementing guard trace/ring in PCB design
I have read here and there some articles about pcb guard trace/ring. But none of them discussed how to correctly implent it. What I could find were some pictures and comparison that cant help me at ...
- 3,274
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Is there a modern discrete component alternative to the JFET as preamplifier?
Please consider this schematic of an electret microphone capsule:
(Source: Wikipedia)
While considering something similar for signal conditioning of a 20 mVpp, 3k impedance output from a piezo ...
- 50.5k
4
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2
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How do I sense sinusoidal voltage/current on a resistor?
I have an experimental circuit like below:
My aim is to measure maximum or effective value the current on the load.
The current sensor is a simple \$ 0.1 \Omega \$, \$5W\$ resistor.
I filtered ...
- 14.1k
3
votes
2
answers
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CAN bus system causing me extra work!
I bought a car reversing sensor system... I bench tested it with a simple 12 V PSU, and it works great. Integrating it into my car is another matter since finding out that most cars since 2008 ...
- 31
2
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3
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4-20mA Current Loops
Why was 4mA and 20mA picked? Was it an arbitrary choice? I don't see this signalling method used much in hobbyist projects, why's that? What are these current signalling loops best for?
- 3,834
2
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3
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How can I "filter out" a small offset current from a current source?
I have a current source that produces a 1 kHz 1 mA sinusoidal current. Unfortunately it also outputs a small DC offset current (microamps). The current source does have a small trim pot to zero out ...
2
votes
1
answer
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Resistor selection
I need help on what resistor (if any) I need for this set up.
12v car power as signal power to DPDT relay switch. What do I need on the deadend side of relay signal?
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2
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Audio - Current Graph
Mostly the signals out of a audio source is represented by Voltage/Time graph; like this -
Then how would the Current/Time graph would look like, and what will happen if we alter it?
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1
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1
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How to convert low voltage digital signal (0-3.3V) to high power current signal 15-40W ranging from 1kHz to 1MHz?
I need to convert a digital signal generated from a microcontroller GPIO (0-3.3V) to a high-power (15-40W) current signal to drive an LED chip for illuminance, where the signal frequency can range ...
- 41
1
vote
0
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Current Controlled Potentiometer
The core problem I am having is that I need to be able to control a DC to DC voltage regulator based on input from a 4 to 20 mA signal. The end goal is to have the output voltage of this regulator be ...
- 11
1
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0
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AC current amplifier with pwm current control
I'm starting to build a piece of test equipment to test a trip device for switch gear breakers. I need to amplify an AC current source. When the breaker is in service the trip device receives its ...
- 11
0
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3
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Converting 1 - 5V signal to 4 - 20mA signal
reference: https://www.analog.com/media/en/technical-documentation/technical-articles/D61_EN-Convert.pdf
I am trying to convert a 1-5V signal to a 4-20mA signal using this circuit but it was not ...
- 11
0
votes
2
answers
845
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Current sign when leave from battery and entering in resistor
I have to some confusion relate to basic fundamentals of current sign.
Here is the simple circuit, with 30v, 1k resistor and current is 30mA.
Whenever i have connected current prob to the battery ...
- 31
0
votes
1
answer
934
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Current Transducer with true RMS voltage output [duplicate]
Possible Duplicate:
ICs that convert an AC signal into its true rms value
Can anybody please recommend me a current transducer which has the provision of true RMS voltage output and instantaneous ...
- 21
0
votes
1
answer
603
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PIC to measure Pressure sensor "MBS 1200"
I have a pressure sensor MBS 1200. I want to connect the same to a PIC micro controller for an application. Can you please suggest a circuit to do the same. I am not familiar with current output ...
- 1,172
0
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0
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(Inductor) Low-pass filter for current signal
I'm using resistors in a series circuit to vary the resistance between a constant 12V supply line and ground.
Using transistors, the current either flow through all resistors, or is routed to ground ...
- 168