The RTC card
images/rtclock.gif

partslist

Resistors

R 1 t/m 1410 K Ohmx-tal32768Hz
R 155K OhmT 1,2BC547b
R 16560 - 1K2T 3BC557b
R 1751K Ohm DAA119
Condensors
c 1 22pF trimmer
5,6pFker.
c 3, 41 mF tantaal

images/rtclock-schema.gif

R16 should be left if no rechargeable battery is used.Attention to the three jumpers.
    Zie:
  • AN 1983 number 4 page 45 for the software
  • AN 1984 number 1 page 90
  • AN 1988 number 3 page 32
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