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Electronics => Electronics => Topic started by: jorj on August 18, 2009, 02:09:19 PM

Title: delay
Post by: jorj on August 18, 2009, 02:09:19 PM

How to calculate a delay of 3 minute in 555 device
I want the delay will be 3 minute in high and 3 minute in low and so on

Title: Re: delay
Post by: dual on August 18, 2009, 08:20:11 PM

Can you tell us the application of using a 555 Timer? Is it a class homework such that you'd have to use a timer rather than a software delay? It would be much easier to just implement delays using software in your microprocessor.

Otherwise, look again at this datasheet.

http://www.national.com/ds/LM/LM555.pdf

Title: Re: delay
Post by: jorj on August 19, 2009, 07:11:24 AM

i only need to calculate

Title: Re: delay
Post by: dual on August 19, 2009, 11:50:22 AM

Okay so you should go and open the PDF file I have attached and go to Application Information.

It will provide you with all the information such as Supply Voltage, RC requirements, etc.

Goodluck

Title: Re: delay
Post by: jorj on August 19, 2009, 06:25:59 PM

i will glad to receive more explanation

Title: Re: delay
Post by: jorj on August 20, 2009, 08:16:20 PM

UP

Title: Re: delay
Post by: Razor Concepts on August 20, 2009, 11:55:26 PM

This is a very electronic related question, for those I ask here:
http://forum.allaboutcircuits.com/