• Home
  • News
  • Magazine
  • Shop
  • Subscribe now
  • Forum
  • Service

Search

Products

My Elektor

Log in

Email:

Password:

Remain logged in

Password forgotten?
Register

Shopping cart Shopping cart

Info Elektor Credits: 0

Home › Magazines › 2006 › October › ECG using a Sound Card

‹ previous
next ›

ECG using a Sound Card

Medical signal processing on a PC

Published in issue 358, October 2006

ECG using a Sound Card
Is it possible to use a computer with an ordinary sound card to record an ECG (electrocardiogram) signal and measure someone’s pulse? This question has been researched in a university dissertation and answered convincingly in the positive. The heart monitor described here is the fruit of this work, and the software is available for free downloading.

Components

Relevant websites

Free downloads

Resistors

R1,R2,R4,R6,R7,R19-22 = 10k

R3,R5 = 22k 1%

R8 = 47k

R9 = 42k2

R10,R11 = 3M3

R12 = 150k

R13 = 4k7

R14,R16 = 47k

R15 = 220

R17,R18 = 100

R23, R24 = 1M

P1 = 10k preset

Capacitors

C1,C2 = 27pF

C3,C10 = 1µF 63V, 5mm lead pitch (no electrolytic cap)

C4 = 100nF

C5-C8 = 100µF 16V radial

C9 = 1nF

C11 = 22pF

Semiconductors

IC1 = TL074 DIP14

IC2,IC4 = TS921 or TL071 DIP8

IC3 = IL300

Miscellaneous

Two wire links

Two 9-V PP3 batteries with connecting clips

Two DIL8 IC sockets

One DIL14 IC socket

PCB, order code 040479-1

PC software and source code, 040479-81

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (u061042.pdf)
10 Elektor Credits
PCB layout (040479-PCB.pdf)
10 Elektor Credits
 

Order from Elektor 
PCB, bare
040479-1 (USD 10.50)
 

Free downloads 

040479-81.zip

Free download
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

Subscribe now

Subscribe now
Subscribe now
Browse online
More

Subscribe to our free
E-weekly Newsletter!

Enter your Email address:

Follow Elektor

      

Act now!

> Become an Elektor Member

> Register for E-weekly

> To Elektor-plus.com

> Become a supporting company

> To FAQs

FAQ

Before submitting questions, review our FAQ section!

Bestseller

Microprocessor Design using Verilog HDL

This book is a practical guide to processor design in the real world. It presents the Verilog HDL in an easily digestible fashion and serves as a thorough introduction about reducing a computer architecture and instruction set to practice. 

More

Package Deals

Elektor Bundles

Check our Package Deals and save money! Discounts up to 19% now available!

More

Price Slashed

Elektor OSPV

This Open Source People Vehicle is perfect for factory halls, warehouses, hospitals, colleges, schools etc.

More

Elektor PCBs at 25% OFF

© 2012 Elektor•Feedback•Media Data•Disclaimer•General conditions•Sitemap•RSS