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Build using my component layout and use the schematic for
parts and connection verification.
Use the same circuit board holes I use so troubleshooting is easier!
Solar Cell
(I used a table belt
sander to reduce it down to palm size - see Tour
photo)
Lowe's Hardware Store
- I removed it from a Malibu
sun-powered yard light - Model LZ1 D $8.98
USD
This is the most sensitive solar cell I
found, even sanded down. The Radio Shack solar cell 276-124
will not work!
I found a solar cell that is thin like
the aluminum of a cola can and works excellent above 100 hz.
It can be scissor trimmed to a size of 1"x 3.5" and is
very durable. Email me for more info.
Transistor
Q3 = 2N2222A Pack of
15 Cat # 276-1617 $2.49
USD - You should already have this from
the Limited Construction -
Mounting holes = i31e-i33b-i35c
(Pins
down, Flat
side facing you )
Buy 2 Super Bright LED
Cat # 276-307
$1.99 USD
<= make certain this is what you use!
3000 mcd with 12 degree viewing angle
Both extension cables below must be long enough
(24") to reach the opposite side of your final enclosure design.
LED-1 Mounting holes = Solder 24"
minimum extension cable = J11-Y11
LED-2 Mounting holes = Solder 24"
minimum extension cable = X35-A35
Resistors
R24
= 220 ohm
(red - red - brown - gold) Mounting holes = E28-F28
R20 = 470 ohm (yellow - violet -
brown - gold) Mounting holes = J31-Y31
R23 = 4.7 K (yellow - violet - red - gold) Mounting holes =
E35-F35
R18, R19 = 10 K (brown - black - orange - gold) Mounting holes =
E33-F33 & J33-Y33
The Above Resistors can be found in the the
assorted pack Cat # 271-308 $5.99
USD
R21 = 100 K ohm potentiometer Cat
# 271-0092- $2.79 USD
Mounting holes = shield
X33 -
A33 center
lead Use twisted or
shielded
wire <= preferred
R22 = 5 K ohm potentiometer
Cat
# 271-1714 $2.79 USD
Mounting holes = shield
Y11 -
i11 center
lead Use twisted or
shielded
wire <= preferred
Audio
Output is taken off the R22 pot center terminal or LED. Use twisted or
shielded
wire <= preferred
Inductor Choke
L3 Audio Isolation Transformer 1:1 turn ratio Cat
# 273-1374 $3.99
USD
This will quiet down the background noise in electrically noisy environments
and smooth out the sine wave.
Mounting holes = White-H30
Yellow-C28 Red & Black-C18
Capacitors
C17 = .22 uf 224 marking
Cat
# 272-1070 .99
USD
Mounting holes = G30
- G34
C6 = 100 uf electrolytic Cat
# 272-1044 .99
USD
Mounting holes = E31
-
F31
<= negative - observe
polarity
Last Page Update 12-31-03
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