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Search results: 18   Output: 11-18
  1. Based on electromagnetic-field radiation. Place it under the pillow - Built-in timer. Circuit diagram: Parts: R1,R5 1K 1/4W Resistors R2 10K 1/4W Resistor R3,R6 10M 1/4W Resistors R4,R7 2M2 1/4W Resistors R8,R9 4K7 1/4W Resistors C1,C7 47µF ...
  2. Six timing positions suited to different skin types Timing affected by sunlight intensity Circuit diagram: Parts: R1 47K 1/4W Resistor R2 1M 1/4W Resistor R3,R5 120K 1/4W Resistors R4 Photo resistor (any type) C1,C3 10µF 25V Electrolytic ...
  3. Particularly suitable for cellulite treatment 3V battery supply, portable set Circuit diagram : Parts: P1 4K7 Linear Potentiometer R1 180K 1/4W Resistor R2 1K8 1/4W Resistor (see Notes) R3 2K2 1/4W Resistor R4 100R 1/4W Resistor C1 100nF 63V ...
  4. Dave Clausen The problem: Grass dies without strong sunlight. The solution: Construct a grow light that doesn't consume a lot of power, doesn't block the natural sunlight, and produces natural-looking colors. Step 1: Solder up strings of red, ...
  5. Refik Hadzialic This article should teach you how to build a simple heart monitoring device, ECG/EKG (electrocardiograph). Before I continue to explain what I did, I would like to WARN you! 500 mA on 220 V will completely destroy your nervous ...
    Circuits » Medicine » LTC1044
  6. Here's a simple lie detector that can be built in a few minutes, but can be incredibly useful when you want to know if someone is really telling you the truth. It is not as sophisticated as the ones the professionals use, but it works. It works by ...
  7. From: (John Haddy) Newsgroups: sci.electronics Subject: Electrical Safety Date: 2 Mar 1994 06:20:49 GMT Organization: Macquarie University, Sydney Australia NNTP-Posting-Host: I wrote the ...
  8. Infrared Heart Pulse Monitor - Senses heart pulst through earlobe via an infrared clip Reverse engineered circuit diagram of a pulse sensor circuit board out of a treadmill. Notice that the output is level shifted for use by CMOS logic running on ...
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