Jet engine sound generator

Description.
This jet engine sound generator circuit is based on the sound generator IC HT2844P from Holtek Semiconductors. This particular IC can make four sounds namely low speed sound of jet engine, high speed sound of jet engine, missile sound and machine gun sound. Each of these sounds can be activated by connecting the pins 12, 13, 14and 15 to ground by using the respective push button switches. Resistor R3 can be used for manually increasing or decreasing the speed.LED D1 gives a visible indication of the sound.

Circuit diagram.

jet-engine-sound-generator


Notes.

  • The circuit can be powered from a 3V battery.
  • Do not give more than 3.3V to the IC.
  • K1 can be a 200mW/8 Ohm speaker.
  • IC1 must be mounted on a holder.

25 thoughts on “Jet engine sound generator”

  1. sir dis is my 1st miniproject dat i am gng to do i want a lot of support frm u dat how to do nd vat to do

    1. Yes all the components are available in the electronic spare market. you can assemble on universal board and use IC socket for the IC. Do not insert IC into the socket till you finish soldering and through checking of the wiring.

  2. can u please tell me the out put and full explanation of this circuit i want different thing that is related to this circuit please give a Good responce i`ll appriciate u

  3. Hi Noel there is no substitute for these ICs as they are ROMs programmed at the IC manufacturer’s works.

  4. Hi Patrick you can use Peizo buzzer in place of speaker. use the one which can work down to 2.7 volts.

  5. Hi Steven it is not to be connected. R3 is used as a rheostat (variable resistnce) not as a potentiometer.

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