Binary Clock alterations for Australia (i.e. 50Hz power)?

Hi,

I have found a schematic for a binary clock at
http://www.csgnetwork.com/binclockschnp11.html . But the problem is
that the CMOS 4040 is being used to count the 60 Hz power from the US.
I have looked and looked on the internet, but can't seem to figure
out if it is possible for the clock to work on the Australian power
supply (it is 50Hz). I thought that if you changed the connections on
the pins (for 60Hz it is pin 2,3,5 & 6) then it would work, but I
can't seem to figure out which pins I would use for 50 Hz?

Can anyone help me?

Thanks,

Al.

 

Just use pins 2,3 and 7 of the 4040 to decode 50 and tie the extra
NAND gate input to +V. There is a drawing and instructions for
using the 4040 counter and NAND gates to divide by various numbers
here:

http://ourworld.compuserve.com/homepages/Bill_Bowden/page11.htm#counter.gif

The clock schematic at CSGnetworks was pirated, and I don't think it
exists anymore. The original is located here:

http://ourworld.compuserve.com/homepages/Bill_Bowden/clock.htm

-Bill

 

My mistake. I thought that pirated drawing had been taken down,
but looks like it was recently put back up at this address:

http://www.csgnetwork.com/binclockschnpl1.html

They copied the schematic, replaced my name and date with
the company logo, and then backdated it to 1994.

(Computer Support Group 12/6/1994).

The original has my name and date (3/30/02) in the lower left
corner, same place where the CSG 1994 logo is now. These guys
just take what they want, erase the author's name, and then
claim copyright to it.

Original is here:

http://ourworld.compuserve.com/homepages/Bill_Bowden/bclock.gif

 

Hello,

Many thanks for that information, I am currently building it. I am
afraid that it might take me a while. And I dont' really know how
well it will turn out, as I am not using a Circuit Board, I am using
lots and lots of wires. and if that doesn't work, I might think about
getting a PCB printed out somehow.

Thanks again,

Al.