Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Re: ECG Front End Circuit
Thanks for your reply , this can be the starting point for me to build the front end circuit
- - - Updated - - -
But i would like to have a look at the front end circuit , i need to know how much gain is required to actually detect a ECG signal from finger tips
Hi All,
I am searching for a circuit design to acquire ECG signals from patients finger tips .
I am referring to these devices :
https://www.alivetec.com/alivecor-heart-monitor/
Has anyone tried it ?
Any help on this topic is appreciated
Regards ,
Ahmed
Hi ,
Please visit my page for any help regarding your FPGA or Microcontroller projects :
https://www.facebook.com/Embedded-Strings-Inc-446837178702797/
Regards
Here are the results of testing Rx coil with a 8-order Sallen-key active filter , on the last stage of the circuit i ran out of accurate values of the capacitors or the sales guy from where i bought it didnt had 5% capacitor for those values , bottom line is it did cleaned the signal , but time...
i was reading the literature of one such switched-capacitor lowpass filter IC i.e MAX291 , sounds very tempting , but do they also provide gain setting ???
Thanks for the advice jiripolivka , i am going to build a 8-order butterworth active filter with a gain of 4 , connect Rx coil to it and do further testing as you have pointed out , and share the results .
I am trying to modulate the 25Hz high signal with 1Mhz , because i think since 25Hz is very low maybe 1Mhz will radiate out further and can be detected . I am planning to make another TX coil with just a few turns of wire around a round plastic cap and try to transmit signal from it , will it...
OK , in that case i should test my Rx coil again with a 8 order active butterworth or other type of opamp filter or just a RC low pass filter . I also wanted to test this circuit see attached . i am just not sure which transistor to use , any suggestions to improve this ckt will be highly...
Hi BradtheRad, No i am not trying to light a bulb or charge something 8 feet away ,i just need to sense 25Hz from a distance of 8 to 12 feet away , i dont care even if its modulated RF i.e pulses of 25Hz but during 40ms of high its 4 or 5 Mhz pulses and when its low for another 40ms its silent...
Hi All ,
I need professional advice on a problem I am trying to solve . I am trying to sense electromagnetic field created by an iron-core coil from a distance of 12-feet. The Transmitter coil is 6-inches in length , #30 AWG wire is winded on it up the thickness of about 0.5 inches ( I don’t...
Basically i need to amplify signal picked up from a Rx coil . The pick up coil has the impedance of 2.4Kohm and its a AWG #44 wire wound air core coil . Actually i do need a pre-amp IC with AGC so that if the TX coil is near or far the gain is controlled . What other opamp or circuit would you...
Hi All,
I am trying to design and build a Low Pass Filter ( Active Filter with opamps ) . This will be the front end pre-amplifier as well as filter connected to a coil that will pick up 22hz to 32hz pulses from a Magnetic coil placed 10 feet away . I have used Filter Wiz Lite and Filter LAB2.0...
Hi ,
I am not sure what should be the approach , i am trying to make a electromagnetic pulsing PIG or Inspection tool as a small project , these are used to inspect oil or gas pipelines and they travel inside the pipe either by maintaining a strong magnetic field or a pulsating one .
i am not...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
