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Type: Posts; User: elmahboule

1. Thread: Need to know IC name

by elmahboule
Replies
0
Views
218

Closed: Need to know IC name

Hello all
I have damaged IC in the screen board of ete video intercom system type T-708c.

please, I want know its name.

See attached image.
2. Thread: How to 9VAC secondary in a transformer (now I have 17VAC)

by elmahboule
Replies
11
Views
1,797

Closed: Re: Transformer Problem

OK karesz thank you
I will try to
3. Thread: How to 9VAC secondary in a transformer (now I have 17VAC)

by elmahboule
Replies
11
Views
1,797

Closed: Re: Transformer Problem

I can not reduce the winding. is difficult
4. Thread: How to 9VAC secondary in a transformer (now I have 17VAC)

by elmahboule
Replies
11
Views
1,797

Closed: How to 9VAC secondary in a transformer (now I have 17VAC)

have a transformer: primary and secondary 220VAC 17VAC
But I need 9VAC secondary (outlet)
So how

5. Thread: reverse the sign of the direct current

by elmahboule
Replies
10
Views
2,241

Closed: Re: reverse the sign of the direct current

yes " keith1200rs "

R1 = R2

thank you, But I do not know the picture of integrated circuit
So can you give me the picture of this integrated circuit. " am_op "
6. Thread: reverse the sign of the direct current

by elmahboule
Replies
10
Views
2,241

Closed: Re: reverse the sign of the direct current

thank you " karesz "
Now I understand
I must use the am_op
as this http://www.sonelec-musique.com/images/theorie_aop_ampli_inv.gif
7. Thread: reverse the sign of the direct current

by elmahboule
Replies
10
Views
2,241

Closed: Re: reverse the sign of the direct current

see my freind
the drive speed has only 1 inbut of direction, if the value is +1VDC we have a direction, if it is -1VDC we get the second direction.
I have 2 Potentiometers, the value of output of...
8. Thread: reverse the sign of the direct current

by elmahboule
Replies
10
Views
2,241

Closed: Re: reverse the sign of the direct current

thank you my Friend "keith1200rs"

I have a +1VDC voltage, so from the this tension, I want the -1VDC, to change the direction of rotation of a drive speed.
So I want to reverse the voltage from...
9. Thread: reverse the sign of the direct current

by elmahboule
Replies
10
Views
2,241

Closed: reverse the sign of the direct current

hello
I want to reverse the sign of the direct current
I want to reverse +1 VDC to -1Vdc
10. Thread: STEP 7 in 7 Steps - A Practical Guide to Implementing S7-300/S7-400 Logic Controllers

by elmahboule
Replies
5
Views
15,344

http://www.4shared.com/file/90460204/5e8d3e9f/Step_7_in_7_Steps.html
11. Thread: Automating with Step 7 in LAD and FBD: Programmable Controll

by elmahboule
Replies
30
Views
53,771

Closed: step7 book

take my friend

http://www.4shared.com/file/90460204/5e8d3e9f/Step_7_in_7_Steps.html
12. Thread: STEP 7 in 7 Steps - A Practical Guide to Implementing S7-300/S7-400 Logic Controllers

by elmahboule
Replies
5
Views
15,344

I will give a best book of step 7 ( step 7 in 7 steps )

it is 4 parts

...
13. Thread: Automating with Step 7 in LAD and FBD: Programmable Controll

by elmahboule
Replies
30
Views
53,771

Closed: simatic book

Hello if anyone has these books in english please upload it. Many thanks.

Automating with STEP 7 in LAD and FBD
Hans Berger

And

STEP 7 IN 7 STEPS
Clarence T. Jones

by elmahboule
Replies
0
Views
1,342

Closed: Looking for the newest version of Schemaplic software

Hi

I need the last version of software "schemaplic"

thanks +++++
15. Thread: BLDC motor speed calculation

by elmahboule
Replies
7
Views
23,382

Closed: calculation of motor speed

OK.....If you have 125Hz on one hall sensor and a 4 pole motor, your result seems correct.
16. Thread: Need materials to learn using Asphalt Mixer LJB1500

by elmahboule
Replies
0
Views
1,097

Closed: Need materials to learn using Asphalt Mixer LJB1500

Hi
Please I need a few lessons about a Chinese machine named “LJB1500”
It is a machine of Asphalt Mixer.
and I need especially the program PLC of this machine.
And thank you +++
17. Thread: File with 30 examples of PLC

by elmahboule
Replies
10
Views
3,297

Closed: EXEMPLES PLC

I give you a lotof exemples of PLC

password of rar file : www.edaboard.com
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