555 timer project help

Thread Starter

tester101

Joined Sep 3, 2007
1
I want to build a circuit that will activate a solid state relay on and off constantly, meaning once the circuit is started the relay will open and close until the crcuit is turned off. I would like to be able to adjust the amount of time the relay opens and closes. I fiqured the best and simplest way would be to use a 555 timer in a constant Astable state. I have checked out a few circuits but I fiqured before I started I would try to get some advice to avoid the pitfalls. The Astable state also alows me to adjust the timing of the 555 timer output waveform. Seems like what I need but maybe someone will have a better idea. Anyways thanks for reading and any help you can give.
 

hgmjr

Joined Jan 28, 2005
9,029
What is your requried cycle rate needed for the relay?

Can you give a few more details about the timing of the circuit?

hgmjr
 

beenthere

Joined Apr 20, 2004
15,819
It is not acceptable to jump in on another's thread. If you have further questions, please start a new posting to ask it in.

You can get the datasheet for an LM555 timer and use the included formula for the resistor values.
 
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