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Home › Magazines › 2007 › April › Very Simple Clock

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Very Simple Clock

Reworking a Design from 1971

Published in issue 364, April 2007

Very Simple Clock
Electronics moves with the times. Over the years the options available change and there are ever different solutions to realising a certain concept. It is often the case that the amount of integration is increased as much as is possible. A good example is this Very Simple Clock. This clock is based on the Hebinck-clock that was published in the May and June 1971 issues of Elektor Netherlands (the design was never published in the English-language edition, which first appeared in 1975).

Components

Free downloads

Resistors

R1-R8 = 100

R9 = 10k

Capacitors

C1,C2 = 22pF

C3 = 220µF 25V radial

C4 = 47µF 16V radial

C5,C6,C7 = 100nF

Semiconductors

D1-D24 = LED, 5mm, high intensity

D25-D28 = LED, 3mm, high intensity

B1 = B40C1500R (round case ) (40V piv, 1.5A)

IC1 = PIC16F628-20/P, programmed, order code 060350-41

IC2 = 7805

Miscellaneous

DCF receiver module, Conrad Electronics # 641138

K1 = 2-way PCB terminal block, lead pitch 5mm

X1 = 16MHz quartz crystal

PCB, ref. 060350-1 from ThePCBShop

PIC source and hex code files, free download # 060350-11

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (u070466.pdf)
10 Elektor Credits
PCB layout (060350-PCB.pdf)
Free download
 

Order from Elektor 
PIC16F628-20/P, programmed
060350-41 (USD 9.40)
PCB, bare
060350-1
 

Free downloads 

060350-11.zip

Free download
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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