Wednesday, February 27, 2019

Project on How to Build Circuit Schematic Ultrasonic Proximity Detector Based on LM393 IC

Eltronicschool. - There are many aplication of using ultrasonic proximity detector as like when you want to build  an automatic flush toilet for your home or design a machine to taunt your cat every time you walks by.

In here we will show you one project on how to build by your self circuit schematic ultrasonic proximity detector based on LM393 IC look like shown in Figure 1 and Figure 2 below.

There two main part of this project called with transmitter and reciever. You need ultrasonic sensor as transmitter and also as reciever. The main IC used in this project is using LM393 IC. Beside we will give you all of the circuit schematic, we also will give you more description on how to build this project and continued to see more from original site. 

Circuit Schematic

Figure 1. The transmitter circuit of ultrasonic proximity detector (Source:

Figure 2. The reciever circuit of ultrasonic proximity detector (Source:

Component Part
  1. R1 3K 5% 1/4W Resistor
  2. R2 150K 5% 1/4W Resistor
  3. R3,R10,R14 330K 5% 1/4W Resistor
  4. R4 1.8K 5% 1/4W Resistor
  5. R5 470 5% 1/4W Resistor
  6. R6 10K 5% 1/4W Resistor
  7. R7 2.2K 5% 1/4W Resistor
  8. R8,R15,R17 1K 5% 1/4W Resistor
  9. R9 220 5% 1/4W Resistor
  10. R11,R19,R20,R22 100K 5% 1/4W Resistor
  11. R12 100K Potentiometer
  12. R13 10M 5% 1/4W Resistor
  13. R16,R21 1M 5% 1/4W Resistor
  14. R18 150 5% 1/4W Resistor
  15. C1,C3,C6,C15,C16 100nF Capacitor
  16. C2,C5,C8,C12 1µF Capacitor
  17. C4 33pF Capacitor
  18. C7 47nF Capacitor
  19. C9,C10 22pF Capacitor
  20. C11 22µF Tantalum Capacitor
  21. C13 100µF Capacitor
  22. C14 470µF Capacitor
  23. C17 10nF Capacitor
  24. D1,D2 1N914 Diode
  25. D3 Red LED
  26. Q1,Q2,Q3 2N3904 Transistor
  27. U1 Comparator Dual ±18 Volt 36 Volt
  28. U2 HEX Inverting Buffer/Converter
  29. U3 Standard Timer Single
  30. U4 Standard Regulator 9 Volt 2.2 Amp
  31. K1 12V SPDT Relay
  32. TB1 Terminal Block
  33. J1 2.5mm x 5.5mm Jack
  34. T1 12V 200mA Wall Transformer

Circuit schematic like in Figure 1 and Figure 2 above are the transmitter and reciever of ultrasonic proximity detector based on LM393 IC. The main component in these circuit are ultrasonic sensors and detector and also IC LM393 IC.

Accordingly Jameco site describe that This circuit schematic has a maximum detection range of approximately 6 feet. When someone passes in front of the ultrasonic transceiver board, the contacts of relay K1 will close. The relay will remain energized while the device continues to detect a reflection. When there is no reflection, the relay contacts will open after 20 seconds. Photo 1 shows the assembled circuit on an experimenter's breadboard. And now you can follow step-by-step on how to build this project using link HERE.

Thank you for your coming here in site, we hope the article above will help you to know more about your an electronic circuit design and software in this time, etc. Please comment here when you want to share and other. Thank you.

1 comment:

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