Sound generation using 555 timer

Realization of simple 555 timer sound oscillation circuit which can be found on http://www.uoguelph.ca/~antoon/gadgets/555/555.html as "CW practice oscillator". Its hooked up to 4,5 Vdc but it can work as low as 3V - 15V. 100Kohm potentiometer controls the pitch and 10Kohm the volume, though next time I will probably use linear instead of logaritmic, it does weird things to the speaker, as heard. Can be used like a morse code sound generator, though no one will.

Category:

Science & Technology

Tags:

• sound
• generator
• 555
• timer
• circuit
• potentiometer
• ohm
• linear
• logaritmic
• Vdc
• square
• wave
• continuous
• high
• frequency
• low
• morse
• code

[Greenselves]

good!!

but the websyte disappeared

can you show the diagram??

[CzDavid42]

Oh... that is unfortunate. I did not rewrite it either. Does google still have the history of pages function? I am lazy to research it now... but you can try :)

[samljer]

in your comment says nobody would use that for morse code gen.

But my entire morse code rig "aside from the transmit port" is based off 555 IC

[CzDavid42]

Then I have probably miscalculated...

[lustatus]

schematic please !!! ? ???

[CzDavid42]

Why does nobody read the description. Thats just sad...

[Racecar564]

Put the link in archive.org, you can get to the page there.

[Olegmilosevic1]

@CzDavid42 Page not found :(

[gustavodolifin]

That's an astable configuration, so, you change the value of the resistor and the time base changes, generating an audible frequency :) but it needs an audio amplifier D:

[jayholley123]

omg i got 2 of em speakers :P

[PivomanCZ]

nj to sou vynalezy.. Lokay by te pochvalil :-)