Elenco Deluxe Solar Educational Kit - Manual (Page 9)

9
EXAMPLE 3
CHART A, ITEM NO.1 RADIO 100mA 300mW
Calculate the voltage (E) and then determine the system connecting.
1. E =
2.
E = 3. E =
4. E = 3V
RADIO CONSUMPTION IS 3V 100mA
5. We selected 3V 100mA with increase voltage by connecting in-series circuit system
6. To increase the voltage, connect the solar cells in series system (3V 100mA). Connect the
rows of solar cells with positive point (No.2) to negative point (No.3) by jumper wire and the
screw point No.1 and No.4 are the output.
To increase the voltage, formula as follows:
E total = E
1
+ E
2
e.g.:(E
1
)1.5V + (E
2
)1.5V = 3V
I total = I
1
= I
2
= I
3
But the current (I) remains constant = 100mA
7. 2 rows of cells x 1.5V = 3 Volt
8. Connecting method see Figure 8,11 & 31
THE FOLLOWINGS ARE THE ANSWERS FOR CHART A & CHART B:
CHART A EXAMPLE ANSWER
1. RADIO 3V 100mA 300mW
2. CASSETTE PLAYER 3V 100mA 300mW
3. LED WARNING LIGHTING 3V 100mA 300mW
4. TOYS 3V 100mA 300mW
CHART B EXAMPLE ANSWER
5. SOLAR MOTOR 1.5V 300mA 450mW
6. CASSETTE PLAYER 1.5V 300mA 450mW
7. LAMP BULB 1.5V 300mA 450mW
8. BATTERY CHARGER 4.5V 100mA 450mW
9. GAME APPLIANCE 4.5V 100mA 450mW
10. TOYS 4.5V 100mA 450mW
11. SOLAR MUSICAL 4.5V 100mA 450mW
12. TORCH CHARGING 4.5V 100mA 450mW
P
I
300mW
100mA
0.3W
0.1A