monitor an input pulse train


Posted on Feb 5, 2014

This circuit is a missing pulse detector. It is used in the_ General Purpose Controller Board with Basic Stamp 1. This circuit is used to monitor an input pulse train, and when a pulse is missed the 555 timer output will switch low. For the General Purpose Controller Board the input pulses are provided from an IR sensor salvaged from an old VCR. A


monitor an input pulse train
Click here to download the full size of the above Circuit.

n "All In One Remote" is used to trigger the IR sensor continuously by clamping one of the remote buttons down, which causes the remote to transmit continuously. When the IR beam is broken by someone walking past it the missing pulse circuit produces an output to the Basic Stamp. R2 must be adjusted differently for different buttons on the remote.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    220V 200W Bulb flasher
    Visual zero-beat indicator
    5V 0.5A power supply
    220V Touch Switch
    Proximity detector schematic
    arduino Glacial Communications
    Cymbal Vacuum Tube Push/Pull Power Amplifier 6H30 6W
    78xx Voltage Regulators
    Circuit explanation of DC/AC inverter
    Using a TENS for relief from RLS or Restless Legs Syndrome



    Top