Home > Circuit Blox > Ultrasonic Astable
UPDATED:.15:53 06 January 2016
FUNCTION BLOCK
FUNCTION

Generates a 40KHz wave to drive an ultrasonic transducer

  • -Rst = Resets astable stopping oscillation, when low - this can be used to pulse the astable.
  • Frequency can be tuned to receiver transducer using VR1

Supply voltage: 4.5 to 15 volts
CIRCUIT DETAILS
+V
-Rst
0V
PCB LAYOUT

PCB size: 51mm x 25mm

Assembly Instructions
+V
Vout
0V

NOTES

  • The circuit uses a CMOS 4011 IC whcih has 4, 2-input NAND gates.
  • P14 and p7 are power connections to the IC

APPLICATIONS:

  • Buggy collision detection
  • Distance measurement
  • Burglar alarms
  • Remote control
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