digital clock circuit

circuit digram on bread board


  • Total voters
    24

Thread Starter

sajed

Joined Nov 2, 2004
5
plz can u help mee,
i want circuit digram of digital clock circuit on the bread board with this component

IC 555
6* IC 7447
5* 7490
1 74192
6* 7SEGAMENT
2* 7414
2* 7408
2* 7402
2* 7476
CAPACITOR 100MF
10* LED
R=7.2Kohm, R= 3.6 Ohm
thanx
 

mozikluv

Joined Jan 22, 2004
1,437
hi,

are you going to use all those chips you listed to make a digital clock, when you can make a digiclock with just 3 chips.
 

beenthere

Joined Apr 20, 2004
15,819
Hi,

Mozikluv's three chip solution is the better one to go for. Most of your TTL chips are out of production (7402, 7414, 7490, 7476) and hard to find.

What's the 555 for? The usual source for the timebase is the power transformer. You take off one side with a diode and pad it down through a resistor and zener diode.
 
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