Question about Car Audio & Video

1 Answer

Good day, i want to make a decade counter using ic sn74ls90. my problem i want know how to make a schematic diagram using sn74ls90 ic chip for decade counter..pls help me.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 700 Answers

Use this datasheet, it talks about how to configure the decade counter for this chip

http://pdf1.alldatasheet.com/datasheet-pdf/view/5755/MOTOROLA/74LS90.html

Goodluck

Posted on Oct 05, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I want supply voltages& pin numbers of tda 9380ps / n3 / 3 / 1664


To get more details, check these links. Schematic diagrams of some sets, using this number IC is given. You can refer it. If you do not find it there, inform me. The schematic diagrams are in PDF, and cannot send by this window, as you know.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

Dec 13, 2013 | Televison & Video

1 Answer

Toshiba 24af45 horizontal


If rolling in a right to left and not up down it is a sync problem--horizontal sync comes from one of two places in general---a pulse off the high voltage transformer or directly off of what is called in the trade the Jungle IC.

That is not a joke--Most of these sets use a large IC (63 pins or more not unusual) that contains: color, video, vertical drive, ABL and much more---so much is crammed into that chip it decades ago was named the Jungle for clear reasons.

A schematic and or scope may be needed to trace and find what is bad.

if off the high voltage transformer (more common in old sets than new ones) it will be a open resistor.

If at the jungle you would have to go to the pin with the sync and follow it out to see if none at source or if lost somewhere down the stream.

May 29, 2012 | Toshiba 24AF45 24" TV

1 Answer

My galaxy dx99 my frecuency counter is not workin adn the chanel nomber too.please help my.need to see the diagram for frecuency counter that help me toooooo than nickvelez777@yahoo.com


Hi and welcome to FixYa,

Your post "...need to see the diagram for frecuency counter...", please see below schematics.

607092e.gif

Good luck and thank you for asking FixYa.

Dec 19, 2009 | Radio Communications

3 Answers

I need datasheet for AT2005 IC


Datasheet here:

http://www.china-ate.com/PDF/IC/AT2005B.pdf

Jan 30, 2009 | OEM Systems ATX P4 350 Watts Power Supply...

1 Answer

Troubleshooting main board.


Three things to look for in service with LCD monitors,
1 bad capacitors
2 Bad transistors for the back light feeds
3 bad ic pulse chips for the Non function circuit
you will not find schematics unless you peruse the patent office records, reverse engineer the circuits and you will have a schematic
when the main chip fails on the vga board its time to buy a new vga video board,
sounds like your board may be suffering a bad IC telling the main chip the power is OK

let me know how it goes.

Dec 29, 2008 | HP w19 19" LCD Monitor

4 Answers

For Sony KV-1415WR problem


Hiii...

First :
what chassis your tv set have ?

#2 : Where exactly the location of D608 ?

#3 : How may time the LED Blinking ? like we all know Sony have selft diagnostic with it ?!

I hope hear from you soon...

Thank's

[Vrya]

e-mail : be_cek@yahoo.com

Oct 08, 2007 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

No verical


Hello gurdev, If all you have is a straight horizontal line across the middle of the screen, you have a vertical deflection problem. This may be caused by the opening of the vertical coupling capacitor, an open winding in the yoke transformer, the vertical drive transistor might be malfunctioning, or the vertical output IC chip might be defective. You will have to check all of these, make sure that you have a schematic, a multimeter, and an oscilloscope. Here is why: 1) schematic diagram to know where parts are and the voltages and signals present at test points. 2) multimeter to measure DC voltages on the pins of components 3) oscilloscope to measure signals at test points shown on the schematic. If you do not have a background in electronics please take your set to a repair shop, however if you have a background in electronics your troubleshooting will be around the vertical section if the tv. Thank you, Shuttle83

Sep 16, 2007 | JVC AV-27230 27" TV

2 Answers

CONVERGENCE ic CHIP


if you can remove the rear panel assy. look for the convergence ic's they start with stk--- and you got the part number you need a source panasonic is 814 source and the number on the ic's stk 390 ----/

Aug 22, 2007 | Panasonic PT-53WX42 53" Rear Projection...

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

57 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4848 Answers

yadayada
yadayada

Level 3 Expert

75817 Answers

The Knight
The Knight

Level 3 Expert

74118 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...