Need Help with constructing egg timer

ericgibbs · Oct 13, 2008

gargi_khullar said:
Hi
My teacher could not find 4029 so he asked me to use 4510 IC's presettable updown counter. So now I have to use 4510.
I was wandering do I have to to make any changes to the to the circuit diagram that pumpo had advised.??
and since it is 4510 is pin 7 a not gate ? or not?
and e.g for pin 9 B/D is used. Is it the same as resit?

and by putting pull down resistors will teh circuit be complte?
Dayummmm...itz hard....
I am from India but doing these papers in Newzealand.
It is so hard to get any help here except for online help. Teachers are useless.
Lol

hi,
The 4510 is BCD only Up/Down counter, it should be OK.
Connect pin9 to 0V [MR]

Pin7 is the Terminal Count, which goes low when its counted down.

Does that help.?

gargi_khullar · Oct 13, 2008

..

Hi
can anyone please describe all the markings given in that circuit. for example what is u1.1, u2.1 etc
It is bit confusing. i dont wanna screw the whole project. we are given 1 week to complete it
phew

rahulan999 · Oct 13, 2008

BTW, 'pumpo' seems like a one post wonder

I just got some nostalgia about my LA4510 which I loved lot for constructing my pocket radio !

mvs sarma · Oct 13, 2008

rahulan999 said:
Thanks. Calcoil is rocking!
Any such program is there for ferrite cores.

try this site and try to download minirk12_.xxx
http://www.tech-systems-labs.com/freesoftware.htm
this software is from Amidon the ferrite manufacturer

rahulan999 · Oct 13, 2008

Thank you for these softwares Sarmaji. I really hi-jacked this thread

pumpo · Oct 14, 2008

hi,
u1=4029 pin7 is out with active low level ...you can use 4510 without any changes

u2=4093

ray · Nov 7, 2008

MC Sharma books

Hi everybody

I also was a fan of M C sharma books..I do have most of those book with me still. Soon I will scan them and upload so others can get them also..
By the way do all of you have "forrest Mims Book" from Radio shack USA. You can get them as pdf in interent and is really great. Try them.

electrobook · Dec 6, 2008

dear friend

i have just registered and have seen your post. If you require any project books please let me know and i'll try to provide them Regards

Need Help with constructing egg timer

ericgibbs

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