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===Shocking Ourselves for Science===
 
===Shocking Ourselves for Science===
 
[[Image:ShockingOurselves.jpg]]
 
  
 
Mikolaj brought some electrodes - 3M [http://solutions.3m.com/wps/portal/3M/en_US/IP/infectionprevention/solutions/patient-assessment/red-dot-electrodes/red-dot-repositionable-electrodes/ Red Dot]monitoring electrode with foam tape and sticky gel.  They are pretty cheap - you can get [http://cgi.ebay.com/2-NEW-BAGS-100-EKG-ECG-3M-RED-DOT-ELECTRODES_W0QQitemZ380137824977QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5881fae2d1&_trksid=p3286.c0.m14&_trkparms=65%3A12|66%3A2|39%3A1|72%3A1205|293%3A1|294%3A50 100 on eBay for $19].  We hooked them up to freqency generator (max 10V), but that wasn't feelable.  Then we used DC power supply (up to 50V), and it's shocking at about 30V, totally feelable at 20V once you've created the circuit through your skin once.  Current flow was between 1mA and 10mA.  We hacked up a transformer which steps up the voltage to peak 30V (therefore about a 3x step up).  It's feel-able with less voltage (down to maybe 12V for sensitive people, other people needed 20V or more), and the current flow is under a mA, therefore the power usage is <15mW, which is pretty awesome.
 
Mikolaj brought some electrodes - 3M [http://solutions.3m.com/wps/portal/3M/en_US/IP/infectionprevention/solutions/patient-assessment/red-dot-electrodes/red-dot-repositionable-electrodes/ Red Dot]monitoring electrode with foam tape and sticky gel.  They are pretty cheap - you can get [http://cgi.ebay.com/2-NEW-BAGS-100-EKG-ECG-3M-RED-DOT-ELECTRODES_W0QQitemZ380137824977QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5881fae2d1&_trksid=p3286.c0.m14&_trkparms=65%3A12|66%3A2|39%3A1|72%3A1205|293%3A1|294%3A50 100 on eBay for $19].  We hooked them up to freqency generator (max 10V), but that wasn't feelable.  Then we used DC power supply (up to 50V), and it's shocking at about 30V, totally feelable at 20V once you've created the circuit through your skin once.  Current flow was between 1mA and 10mA.  We hacked up a transformer which steps up the voltage to peak 30V (therefore about a 3x step up).  It's feel-able with less voltage (down to maybe 12V for sensitive people, other people needed 20V or more), and the current flow is under a mA, therefore the power usage is <15mW, which is pretty awesome.

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