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Search results: 130   Output: 81-90
  1. [ index ][ back ][ site search ] [ acronyms ] [ discussion ] [ mail to a friend ] [ post message ] Mains surge suppressor The following circuit is a schematic of mains surge suppressor circuit manufactured by Strömfors and sold undel model name ...
    www.epanorama.net
    02-10-2005
  2. jap.hu
    28-05-2005
  3. Metal detector The co-author of this project is Andrei Chtchedrine. Andrei is author of Metal detectors for treasures and relics hunting book. His hobby is metal detectors (theory and practical designs). Visit his website! We have designed the ...
    home.skif.net
    30-04-2005
  4. LED power supply - Single AA cell powers two LEDs at constant current HOME This circuit is reasonably efficient, but efficiency can be increased by using a germanium transistor at the 33 ohm current sense resistor.     HOME    
    members.shaw.ca
    08-03-2005
  5. LED stepdown power supply - PFM stepdown switcher powers LEDs at constant current HOME This is a proof of concept circuit which needs improvement. The part values shown will run a high efficiency red LED with a Vf of 1.9V from only 2 nicads, right ...
    members.shaw.ca
    08-03-2005
  6. LED Stroboscope - Maintains constant brightness at all flash rates HOME The rotary switch is available for $5.00USD as of 2003 from DigiKey under part number EG1951-ND or EG1952-ND. It is a real pain to operate this circuit without a proper switch. ...
    members.shaw.ca
    08-03-2005
  7. Stud Sensor Automatic - This is the old discrete component design, now superceded by a PIC. HOME This thing is a very neat capacitive sensor. For you europeans, this little gem is used in north america mostly for detecting wooden beams behind ...
    members.shaw.ca
    08-03-2005
  8. Flashlight Timers - Children's flashlights often have timers to preserve battery life HOME A nice design which even turns off if the pushbutton is held depressed or jammed a long time. Not re-triggerable while the light is still on though(Thanks ...
    members.shaw.ca
    08-03-2005
  9. Ultrasonic Pest Repeller - These emit noise to confuse or agitate insects or animals HOME This is one of the better and more popular brands. It emits bursts of pulses at different frequencies. I did not find any spider webs inside this unit: Here ...
    members.shaw.ca
    08-03-2005
  10. Photo Flashes - These flashes all run from a single AA battery HOME This model is very simple and charges as long as you hold the pushbutton: This one charges with a single button press:     HOME    
    members.shaw.ca
    08-03-2005
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