Hello,
When you select a resistor, among the various details, you should consider also the wattage rating.
Concerning this, I stumbled on a basic problem not so basic to me. Simply stated, the exercise asks what should be the wattage rating of each resistor. In order to solve this problem I've simulated the behaviour of three resistors in series acting as a voltage divider. Looking at the wattage profile of the first resistor in series - R1 - (see attached plots) should one consider the peak value of 90W, therefore choosing a 100W resistor (or, better, 180W) or it is the time average of 22.6W the value to consider, choosing a 40/45W resistor?
As far as the other two resistor is concerned, the things seem to be clearer: Choose a 10W resistor for R2 (average of 6.2W) and a 3 or 5W resistor for R3 (average of 2W). Am I wrong?
Thank you.
When you select a resistor, among the various details, you should consider also the wattage rating.
Concerning this, I stumbled on a basic problem not so basic to me. Simply stated, the exercise asks what should be the wattage rating of each resistor. In order to solve this problem I've simulated the behaviour of three resistors in series acting as a voltage divider. Looking at the wattage profile of the first resistor in series - R1 - (see attached plots) should one consider the peak value of 90W, therefore choosing a 100W resistor (or, better, 180W) or it is the time average of 22.6W the value to consider, choosing a 40/45W resistor?
As far as the other two resistor is concerned, the things seem to be clearer: Choose a 10W resistor for R2 (average of 6.2W) and a 3 or 5W resistor for R3 (average of 2W). Am I wrong?
Thank you.
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