Kinslayer: Created page with "[SC->] Important Note! The CD4069 chip shown here is actually incorrect. The data sheet for the CD4069 shows the inverters pointing the OPPOSITE direction. *** I tried building t..."

2012-02-14T11:12:17Z

Created page with "[SC->] Important Note! The CD4069 chip shown here is actually incorrect. The data sheet for the CD4069 shows the inverters pointing the OPPOSITE direction. *** I tried building t..."

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[SC->] Important Note! The CD4069 chip shown here is actually incorrect. The data sheet for the CD4069 shows the inverters pointing the OPPOSITE direction. *** I tried building this circuit and could not get it to work. It seems the "fix" is actually a break. Stick with the original circuits on the other pages and it should work just fine. *** Warning #2: the chip data sheet doesn't recommend leaving the unused inverters unconnected/floating. Probably the best solution would be to tie the inputs to Vcc and outputs to ground.

[[Category:Building your own]]
{{hackcanada|http://www.hackcanada.com/homegrown/wetware/ces/dope/mart.html}}

I've added a 1m ohm pot to the electrode because when I tested it with the multimeter and oscilloscope I found out that the final output, at the electrode, was building up to 1200 millivolt!

So, there's a pot for the frequency (2hz to ultrasound), another one for the output level, and an on-off switch. The electrodes are made of felt over a shim (0.006 inch thick) of brass welded to the wire. I use standard "salinex" (salt water "nose cleaner"). Here's the little windows program I use to get an oscilloscope out of my pc, using the sound card.

Martin C.
2005-12-23

==Circuit Diagram==

[[Image:ebs_4069_correct.gif]]

==Finished unit==

[[Image:mart1.jpg]]
[[Image:mart2.jpg]]
[[Image:mart3.jpg]]

Corrected 4069 by Martin C - Revision history

Kinslayer: Created page with "[SC->] Important Note! The CD4069 chip shown here is actually incorrect. The data sheet for the CD4069 shows the inverters pointing the OPPOSITE direction. *** I tried building t..."