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This circuit is for amusement only! It
flashes three led’s (possibly of different colours) in
sequence. The frequency of operation depends on the values
of the capacitors and resistors. Try 1M resistors and 220n
capacitors.
The integrated circuit is a 4584 hex inverting Schmitt
trigger |
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Printed Circuit Board :
Copper
side (magnified) |
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Printed Circuit Board :
Component
Side (magnified) |
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© David Hoult 2009
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The
Open Door Web Site 