Elenco Electronics 202 - Manual (Page 82)

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Project #187
OBJECTIVE: Make and play the electronic game of “Quiet
Zone”.
Use the circuit from project #186, but place three (3) 2-snap wires
(“shorting bars”) under paper as shown on left.
Setup: Player 1 sets the “Quiet Zone” by placing three (3) shorting
bars under the paper on row A, B, C, or D, leaving only one open.
Player 2 must NOT know where the shorting bars are located under
the paper.
Both Player 1 and Player 2 are given 10 points. The object is for Player
2 to guess the location of the “Quiet Zone” by placing his shorting bar
at positions W, X, Y, or Z. In the drawing on the left Player 1 set up the
“Quiet Zone” at position “C”. If Player 2 places his shorting bar across
“Z” on the first try, the sounds played mean he has not found the “Quiet
Zone” and he loses 1 point. He has 3 tries to find the zone on each
turn. Each time sounds are made he loses a point.
Player 2 then sets the A, B, C, D side and Player 1 starts searching.
Play continues until one player is at zero points and makes sound
during that players turn.
Enhanced Quiet Zone Game
Project #188
OBJECTIVE: To show how capacitors store and release
electrical charge.
Turn on the slide switch (S1) for a few seconds, then turn it off. The
green LED (D2) is initially bright but goes dim as the batteries (B1)
charge up the 470
μF capacitor (C5). The capacitor is storing electrical
charge.
Now press the press switch (S2) for a few seconds. The red LED (D1) is
initially bright but goes dim as the capacitor discharges itself through it.
The capacitor value (470 μF) sets how much charge can be stored in
it, and the resistor value (1k Ω) sets how quickly that charge can be
stored or released.
Capacitor Charge &
Discharge
Shorting Bar
for A, B, C,
or D.
Paper Sheet to
hide position of
shorting bar.
Shorting Bar for
W, X, Y, or Z.