DIY ECG notes: Difference between revisions
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== Notes and scratchpad for DIY ECG project == | == Notes and scratchpad for DIY ECG project == | ||
== PARTS for higher-precision version(s) == | |||
* Instrumentation Amplifiers (not sure why these are priced so differently) | |||
** Both have CMMR of 110+ for gain of 1000, so they should both work equally well. AD624AD is referenced in the sciam article, but it also mentions the AD620A which is 1/3 the cost at about $7. | |||
** Cheaper version: [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AD620ANZ-ND AD620A] | |||
** Expensive version: [http://parts.digikey.com/1/parts/453660-ic-amp-inst-25mhz-prec-ln-16cdip-ad624ad.html AD624AD] | |||
== PARTS for basic version(s) == | == PARTS for basic version(s) == | ||
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* 0.1uF capacitor(s) | * 0.1uF capacitor(s) | ||
* Variety of 1/4 watt resistors (10k, 100k, etc) | * Variety of 1/4 watt resistors (10k, 100k, etc) | ||
* shielded wires for electrodes | * shielded wires for electrodes (phone or coax cables) | ||
* electrodes (soldered pennies, medical electrodes, etc) | |||
== References == | == References == | ||
Revision as of 05:14, 25 March 2010
Notes and scratchpad for DIY ECG project
PARTS for higher-precision version(s)
- Instrumentation Amplifiers (not sure why these are priced so differently)
PARTS for basic version(s)
- LM358 or LM324 (quad vs dual) op amps (or LF353 which is pin compatible)
- Diodes
- 0.1uF capacitor(s)
- Variety of 1/4 watt resistors (10k, 100k, etc)
- shielded wires for electrodes (phone or coax cables)
- electrodes (soldered pennies, medical electrodes, etc)
References
These sites, papers, and articles provide info on ECG making: