Latest Blog Posts for Circuit Finder

• Fridge door Alarm
  on Oct 22, 2010 in Temperature sensor
  This circuit, enclosed in a small box, is placed in the fridge near the lamp (if any) or the opening.
• Geomagnetic field detector
  on Oct 22, 2010 in Magnetic sensor
  This basic oscillator will detect the Earth magnetic field. The ferrite rod and coil are taken from an old Medium Wave receiver and a small magnet is glued at one end.
• Frost Alarm
  on Oct 22, 2010 in Temperature sensor
  The thermistor used has a resistance of 15k at 25 degrees and 45k at 0 degrees celsius.
• Heating System Thermostat
  on Oct 22, 2010 in Temperature sensor
  This circuit is intended to control a heating system or central heating plan, keeping constant indoor temperature in spite of wide range changes in the outdoor one.
• Headphone Amplifier
  on Oct 20, 2010 in Audio amplifier
  High Quality unit. No need for a preamplifier.
• Nocturnal Animals Whisker
  on Oct 20, 2010 in Animal repellent
  his circuit proved very useful in keeping away from a terrace or a porch some bats and other nocturnal animals. You can use it for similar or different purposes. The lamp illuminates at a 4-5 seconds delay and stays off about one minute and 15 second...
• High Current Power Supply
  on Oct 20, 2010 in DC power supply
  High Current Power Supply...
• Fixed Voltage Power Supply
  on Oct 20, 2010 in DC power supply
  The fixed voltage power supply is useful in applications where an adjustable output is not required. This supply is simple, but very flexable as the voltage it outputs is dependant only on the regulator and transformer you choose.
• Mosfet TESTER
  on Oct 18, 2010 in Component tester
  This is a variation on the astable multivibrator. Circuit was recently developed to test for N-mosfets(the power kind e.g irf830)...
• Magnetic Gun
  on Oct 18, 2010 in Fun and games
  When optimally tuned, it will propel a small slug about 1.5 metres high, or 2.5 metres horizontally.

{pvComments::user_name}

{pvComments::date}

Delete 

{pvComments::comment}

Post a Comment