Building an ECG Monitor: Op-Amp Recommendations and Tips | Forum Discussion

  • Thread starter Thread starter temujin
  • Start date Start date
  • Tags Tags
    Monitor
AI Thread Summary
Building an ECG monitor requires careful selection of op-amps, with users expressing concerns about the high cost and availability of options like TI's ina122 and ina332. Key specifications to consider include common-mode rejection ratio (CMRR), power supply rejection ratio (PSRR), input impedance, and voltage characteristics. Users are encouraged to clarify their specific requirements to receive tailored recommendations. The discussion emphasizes the importance of balancing performance with cost and availability in component selection. Overall, understanding the necessary specifications is crucial for successfully building an effective ECG monitor.
temujin
Messages
46
Reaction score
1
Dear Forum,

I would like to build my own ECG monitor.
Does anyone have experience building one?

Especially I am looking for recommendations on which op amps I can use. The ones I have found, like TI's ina122, ina 332 are both rather expensive (like 10 euro per piece) and hard tu find through the regular distributors.


regards
t.
 
Engineering news on Phys.org
What are the specs that you are looking for from your opamp components? What CMRR and PSRR? What input impedance and input output voltage characteristics? What are you going to use for supplies?
 

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...
View full post »

Thread 'Question about the voltage between two charged capacitors'

suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...
View full post »
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Similar threads

What should I be looking for when reading Op-Amps?
Replies
5
Views
2K
Can I Build a Homebrew Analog Computer Using Op Amps?
Replies
2
Views
2K
Solving OP Amp & EMI Problems - Joe's Experience
Replies
11
Views
5K
Properly Thanking Members: Etiquette and Tips | Forum Discussion
Replies
4
Views
2K
Power in electric circuit: apparent contradiction
Replies
13
Views
2K
Electrical DIY electromagnet vs rare earth magnet?
Replies
12
Views
7K
How can I effectively study for multiple subjects in a limited amount of time?
Replies
8
Views
4K
6 months after dropping out of college - my tips
Replies
37
Views
14K
Seeking Advice For Schooling and my Physics Future
Replies
7
Views
2K
  • Sticky
Physics Forums Global Guidelines
Replies
2
Views
502K

Hot Threads

Recent Insights

Back
Top