Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Problem with My circuit

Status
Not open for further replies.

tam_yehia

Newbie level 3
Joined
Apr 28, 2013
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,308
Dear all. I found the attached circuit on the internet and i'm trying now to implement it. But I have a question here. Regrading the 7-segment display inputs from IC2 (75492) I want to know to which pin in the 7-segment display I have to conect this input. Regards

2013-02-06 07.15.35.jpg
 
Last edited:

chuckey

Advanced Member level 5
Joined
Dec 26, 2010
Messages
4,863
Helped
1,308
Reputation
2,622
Reaction score
1,283
Trophy points
1,393
Location
Southampton and holiday cottage in Wensleydale (UK
Activity points
31,695
To make a display come on the left hand pins of the 75492 must be at a 1. This IC makes each display come on it turn (or all together!). The top chip drives each LED within the display. Some where there should be current limiting resistor.
Frank
 

tam_yehia

Newbie level 3
Joined
Apr 28, 2013
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,308
Thanks Frank. I mean the output of the second IC-75492 (pins 2,6,7,9 and 13) all of them must be connected to the 7-segment displays (my question is to which pin in the 7-segment display must I connect these 5 outputs?).
 

vinoth8051

Full Member level 3
Joined
Dec 21, 2009
Messages
179
Helped
67
Reputation
134
Reaction score
65
Trophy points
1,328
Location
Delhi, Kanpur, Madurai, India
Activity points
2,380
Thanks Frank. I mean the output of the second IC-75492 (pins 2,6,7,9 and 13) all of them must be connected to the 7-segment displays (my question is to which pin in the 7-segment display must I connect these 5 outputs?).

Hi,
Connect to pin 3 and 8 of the 7-segment display. kindly see the image.
.
Hope this helps..
 

FvM

Super Moderator
Staff member
Joined
Jan 22, 2008
Messages
49,122
Helped
14,379
Reputation
29,022
Reaction score
13,130
Trophy points
1,393
Location
Bochum, Germany
Activity points
283,168
Connect to pin 3 and 8 of the 7-segment display. kindly see the image.
Have you seen the 7-segment display in your crystal ball or are you just guessing?

There are about 10 different 7-segment pinouts in use. You'd either refer to a known type or figure out the pinout by using a multimeter.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top