Data Sheet

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218. Flickering Candle
Replace the speaker (93) with the lamp (76) in project #213, then
connect points C and D with a 4-wire (4). If you turn on the switch (62)
you will see the lamp (76) is ashing quickly. You could put this circuit in
your window at night and it would look like a candle in a gentle breeze.
219. Flashing Quick Sale Sign
Replace the speaker (93) with the bi-directional LED (71) in project #213,
then connect points C and D with a 4-wire (4). If you turn on the switch
(62) you will see the bi-directional LED (71) is ashing quickly. An indicator
like this could be used to show when a quick sale is available in a store.
220. Four Beats per Second
Replace the speaker (93) with the lamp (76) in project #213, then
connect points G and H using 4-wires (4). If you turn on the switch (62)
you will see the lamp (76) ashing slowly, at approximately 4 beats per
second. Trying counting them for yourself.
221. Two Channel Monitor
Replace the speaker (93) with bi-directional LED (71) in project #213,
then connect points G and H using 4-wire (4). If you turn on the switch
(62) you will see the bi-directional LED (71) is ashing slowly. Remove
the 4-wire (4) from points GH and the bi-directional LED (71) ashes
quickly. The light pulses from the bi-directional LED (71) could represent
Morse code signals. This is similar to what a technician working for the
FBI or CIA may see when they change the channel they are monitoring.
Codes are only simulated, not real.
222. Attention Please
Replace the speaker (93) with the heart LED (69) in project #213, then
connect points C and D with a 4-wire (4). If you turn on the switch (62)
you will see the heart LED (69) is ashing quickly. A signal like this could
be used to get someone’s attention.
223. Heartbeat
Replace the speaker (93) with the heart LED (69) in project #213, then
connect points G and H with a 4-wire (4). If you turn on the switch (62)
now, you can see the heart LED (69) is ashing slowly, like a heartbeat.
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