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  • Biofeedback Experiments and Projects (PN055E)

  • Bioprobe (PN064E)

  • Brontophonic Sound (PN046E)

  • Combined Sound and Image Paranormal Projects (PN044E)

  • Electronic Candle (PN068E)

  • ESP and PK Experiments (PN069E)

  • High-Voltage Generator (Kirlian Machine I) (PN051E)

  • High-Voltage Generator (Kirlian Machine II) (PN052E)

  • Kirlian Photography (PN050E)

  • Laser Image Generator (PN048E)

  • Light and Dark Controlled Oscillator (PN058E)

  • Magnetic Field Searcher (PN041E)

  • Noises in the sky (PN042E)

  • Other Paranormal Experiments (PN072E)

  • Paranormal Experiments with Images and the computer (PN043E)

  • Paranormal Experiments with Light (PN066E)

  • Polygraph (PN059E)

  • Sound-to-Light Converter (PN045E)

  • Stranger Things - Not that strange (PN039E)

  • Temperature-Controlled Oscillator (PN057E)

  

Latest

  • DFRobot DFR1115 Gravity LoRaWAN Node Modules
  • DFRobot SEN0659 Industrial RS485 Infrared CO2 Sensor
  • DFRobot MBT0050x Maqueen Plus V3 micro:bit Robots
  • DFRobot SEN0657 Ultrasonic 7-in-1 RS485 Weather Sensor

Circuit Bench

  • FET Colpitts Oscillator (CB22394E)

      This ultra-simple circuit has the frequency determined by the LC network. Any general purpose JFET...

  • Old time crystal radio (CB21213E)

      Found in American documentation from the 1990s, this circuit uses coils with multiple outlets to...

  • Timed Courtesy Light (CB10288E)

      I found this circuit in a 1986 English magazine. It can still be easily assembled, exchanging Q1...

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