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low frequency pulse generation from 555

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aliyesami

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hi i am currently using this 555 circuit , which I think generates a 1Khz signal , can I modify the existing circuit to give me a pulse or a rising or falling edge every 10 secs ?

555_timer_circuit.jpg
 

The values of the timing capacitor and resistors have to be changed for different frequencies (C4, R1, R6).
There are various combinations that will work but I suggest 470K for R1, 510K for R6 and 10uF for the capacitor will be fairly close at about 10.05 seconds intervals. If you need very accurate timing I do not recommend using a 555.

Brian.
 
thanks a lot Brian .. no i dont need accurate count , i just needed a rough figure.
whats the duty cycle of this wave will be?
 

sure its a TLC555CPSR
Description IC OSC SINGLE TIMER 2.1MHZ 8SO LinCMOS™
 

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