Electrical/Electronic Systems
Work Example 7

WorkKey Level: 6
NATEF Automotive Tasks: VI.A.12, VI.A.14, VI.H.7

The customer wants to know if he can attach his power booster to his radio circuit.  His power booster uses 200 watts; can he attach it to the radio circuit?  Use Ohm’s Law to show him if he can or cannot do this.

Use the drawing and chart to show the customer where he can hook up his power booster. (The battery voltage is 12.6.)

Solution:

First, you must decide how many amps the power booster needs.
200 = 12x
x = 200/12 = 16.6
The booster alone will need 16 2/3 amps.

Next we need to determine how much open amps each component has.
Radio:  10 – 6 = 4 open
Cigarette Lighter:  20 – 10 = 10 open
Windows: 20 – 15 = 5 open
Auxiliary:  20 open

The only place the customer can attach his power booster is to put it in auxiliary.