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| Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution. |
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12th November 2003, 09:15 AM
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| Experienced Member   |  ne555 timer with sound frequency :roll: hi, I just wanted to know how NE555 timer works sound freuqency man.
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14th November 2003, 01:30 PM
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| Experienced Member | thansk, but any 1 knows how 555 timer works with pest reppeller
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15th November 2003, 03:36 PM
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| New Member | the explaination 8) hai to i'm arief from indonesia i build TV transmitter with test tone i use MC1455 similar with NE555 sound frequency that human can hear is range in 20Hz until 20kHz. using MC1455 i made in astable multivibrator mode, the output is in pulse waveform i made it variable from 1kHz until 30kHz. you can change the range by changing the variabel resistor. i've the schematic, if u very interest in it you can contact me at email:batigol_arief@yahoo.com ok,that's all  l |
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18th November 2003, 11:30 AM
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| Experienced Member | thanx but i never heard of another chip that can do similar job as 555 timer. I wanted to know if ultra sonic frequency can used as didgital frequency.
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