Dijital Saat

R1=2K2 1/4W 5% IC5-7=74HC32    [3] Q1=BD139 on Heatsink R2......R38=470R 1/4W 5% IC6=74HC08       [4] SL1....SL5=7 pin connector IC1-4=74HC390 [1] IC8=74HC04       [5] SL6-7=2 pin connector IC2-3=74HC92   [2] IC9....IC13=4511 [6] or [74LS47] [7] SL8=3 pin connector [1] 74HC390 or 74LS390= Dual 4bit Decade and Binary COUNTER [5] 74HC04 or 74LS04=  Hex inverter [2] 74HC92 or 74LS92=  Decade, divide by 12 and Binary COUNTER [6] 4511= BCD to 7-segment Latch/Decoder/Driver for CC Display* [3] 74HC32 or 74LS32=  Quad 2-input OR gate [7] 74LS47=   BCD to 7-segment Decoder/Driver for CA Display* [4] 74HC08 or 74LS08=  Quad 2-input AND gate CC=Common Cathode    CA=Common Anode 2. Display R39-40=220R 1/2W 5% DIS6=20 mm Led Display Common Anode SL10.....SL4=7 pin connector DIS1-5=20 mm Led Display Common Cathode* SL9-15=2 pin connector *See Text 3. Time Base [A Choise] R41-42=470R IC14=74HC04* IC19=74HC08* R43-44=10K IC15-16-17=74HC390* S1-2=Push Button normal open CSL1=1MHZ Crystal IC18=74HC32* *See component list in Main Clock 4. Time Base [B Choise] R45=10M IC20=4060          [8] CSL2=3.2768 MHZ crystal C1-2=22pF ceramic IC21-22=4017 [9] S3-4=Push switch recrudescent C3=22pF trimmed capacitor IC23=4013         [10]   5. Power Supply for Clock R46=1K2 2W C16=1uF 25V B2=4 X 1N4001 R47-49=270R C17=1000uF 16V RL1=12VDC 2X2 [10A] R48= D1=12V 1W zener TR1-2=4K7 trimmer C6=2200uF 25V D2-3=1N4002 SL17-18=2 pin connector C7-9-10-13-15=100nF 100V MKT D4-5-6=1N5408 SL16=3 pin connector C8-12-14=10uF 25V IC24-25=LM317 on Heatsink BATT=AKKU battery 6V/1.2Ah C11=47uF 25V B1=100V 3A Bridge Rectifier   6. Block Diagram 7. Connection for Display common Anode or Cathode