# Attie

Discussion in 'The Projects Forum' started by Attie, Mar 31, 2009.

1. ### Attie Thread Starter New Member

Mar 31, 2009
2
0
Howzit guys

I am working on a project and are in need of help and advice.
I am a machanical minded guy, but the project my friend and I are working on involves some electronics.
I need to make a device that puts out DC pulses. The pulses also have to be controled in a way of making it faster or slower as required. If possible i need it as simple as possible.

I hope someone can help, and will apreciate any help i can get.

Last edited by a moderator: Mar 31, 2009
2. ### PRS Well-Known Member

Aug 24, 2008
989
36
You might try a 555 timer.

3. ### KMoffett AAC Fanatic!

Dec 19, 2007
2,718
274
DC pulses huh? What voltage?...millivolts?...volts?...kilovolts? How long a pulse, and how long between pulses?...microcseconds?...minutes...weeks? What does the pulse drive?...an LED?...the national power grid.
A lot more details would help...like describe your whole project.

Ken

Mar 24, 2008
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5. ### Attie Thread Starter New Member

Mar 31, 2009
2
0
Howzit Ken

I want to run 4-8 solenoids (12v) in sequence, almost like an engin. the pulse has to be a microsecond as well as the distance in between. from this speed i need to be able to control the pulses to go faster or back to normal. I cant realy give any more info, hope this helps.

thanks

6. ### KMoffett AAC Fanatic!

Dec 19, 2007
2,718
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A 1μS (+12v?) pulse, at an adjustable interval, sequentially activates each solenoid for a fixed period of time (how long?). Like engine injectors?

So the sequence is (# represents each solenoid's ON time and [-] represents time between 1μS input pulses) 1-2-3-4-1-2-3-4-1-2-3-4....

Ken

Last edited: Apr 2, 2009
7. ### SgtWookie Expert

Jul 17, 2007
22,202
1,793
1mS (millisecond) = 1/1000 second.
1uS (microsecond) = 1/1000 mS.
If you're talking 1uS high and 1uS low, that's a frequency of 1/2uS = 500kHz.

I don't know of any solenoids that could possibly respond that quickly.