Sunday, September 12, 2010

7 Segment Digital Clock Circuit Using IC 5314

This circuit diagram of digital clock uses six common anode seven segment displays  to show the time. It needs neither micro controllers or PIC for it's operation. It's a MM5314 IC driven digital clock operating at 50 Hz or 60 Hz, and 12 or 24 hour display format.It's very suitable for college mini projects.
Circuit Diagram of  7 Segment Digital Clock : Click  to enlarge
Parts List
  • R1: 100Kohms
  • R2: 47Kohms
  • R3: 100Kohms
  • R4---R10: 2.2Kohms
  • R11----R17: 10Kohms
  • R18----R24-R25-R26: 220 ohms  0W5
  • R25-26: 1.2Kohms  0.5W   
  • C1:2200uF 25V
  • C2: 100uF 25V
  • C3: 18nF 100V polyester
  • C4-C5: 10nF ceramic OR polyester
  • Q1---Q7= BC550
  • Q8---13= BC560
  • IC1= MM5314N    
  • D1: 1N4148
  • GR1= 4X1N4002
  • S1---S3 : 1X2 mini switch
  • S4---S6 :  Push Button normal open
  • T1= 220V AC/12V 1A
  • DS1....DS7 : 7 Segment Display - Common Anode

For circuit diagram and complete explanation, please Download this document.

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