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I want to measure the output current of a switching power supply via ACS712.
when the switching power supply is not connected to it's supply (220 volt/50 Hz) i measure the sensor's voltage that should be Vcc/2. but it is not and it changes in a spread range from 2.4 to more that 2.7 .
Hi
I'm working with an ACS712 current sensor.
my problem is here:
sensor's output voltage when it is not measuring is not constant.It varies from 2.3 to 2.5.
but it should be fixed 2.5.
what can i do to make that value constant ?
exactly... one of the capacitors of the power supply where totally damaged after my rest. and one of the resistors was burned completely.
but how i can find that does it have current limiting or not ?
thanks...
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How can i find that does it have current limiting or not ?
Hi,
I'm trying to measure output current of a switching power supply.
input voltage is 220 ac.
output voltage is 22 dc.
the load that is connected to the switching power supply has a resistance about 10 Ohms.
I use a 0.22 ohm resistor for converting the current into voltage and then i measure...
Hi,
It sounds to be a difficult project.
Have you decided that where are you going to save your digital data? I think you should use a SD card and then send the data from transmitter to reciever.
but from my experience I suggest using an ARM Micro for your prcessing.
Hi,
I'm trying to send serial data from one micro to another mirco via optocoupler.
my sending speed is 9600bit/sec.
i'm using H11L1 optocoupler.it's speed is 1Mhz(from datasheet)..
but it doesnt work .
Can anyone help me ?
Hi,
I have a 50Hz sinewave that there is a 70KHz wave on it.I need to convert this analog signal to digital form and calculate the specifications of it, like Harmonic distortion,Crest factor and etc.
My sampling frequency is about 150KSPS that it satisfy the nyquist theorem.
but know I dont know...
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