Jet engine sound generator

john January 18, 2011 25 Comments

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.



  • 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.
  • Umesh Shinde
    October 6, 2015

    Can this circuit run ??

  • krishna
    February 27, 2015

    I want to know which board is perfect for given circuit connection..

  • Dave Moerel
    December 12, 2014

    This chip seems to have disappeared, where can I get one,please.

    Regards D.F.Moerel

  • brian
    August 30, 2014

    how do i buy one

  • sridivya
    March 30, 2014

    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

  • sridivya
    March 30, 2014

    sir is all components available

    • Seetharaman
      March 31, 2014

      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.

  • January 28, 2014

    Great post, thanks for sharing. 🙂

  • Malik Mati
    November 5, 2013

    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

  • saravanan
    April 16, 2013

    Sir, i want to a USB amplifier circuit

  • raviteja
    February 10, 2011

    hello sir,can we get all the components required for this?how much this circuit costs?

  • Seetharaman
    November 1, 2010

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

  • noel unciangco
    October 30, 2010

    hi seetharaman,may i ask if there is replacement for HT2844P

  • Seetharaman
    October 12, 2010

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

  • patrick vaz
    October 12, 2010

    Hi Seetharaman,
    Can I use a Peizo Buzzer, instead of a speaker??

  • Seetharaman
    October 11, 2010

    Hi Steven Wish you all the best, the following site you can visit for mfg. data.

  • steven
    October 11, 2010

    thanks seetharaman..wish me luck in building this one..children will like this one..

  • Seetharaman
    October 11, 2010

    Hi Steven Yes you are correct no connections.

  • steven
    October 10, 2010

    thanks for the reply other leg of R3 is hanging??am i right??

  • Seetharaman
    October 10, 2010

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

  • steven
    October 9, 2010

    hey..may i ask the connection of the other leg of the R3??

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