Daily Archives: 10-December-2010

Power Dissipated in a Maximum Phone Load During Ringing

I am writing a specification this morning and I realized that I have never calculated the maximum power drawn by a phone during ringing. I was surprised by the number – 3 W. This is a lot for unit that … Continue reading

Posted in Electronics | 1 Comment

Thermal Runaway Model of Lead-Acid Battery (Part 2)

Derivation of the Output Power Equation The output power equation (Equation 3) is really a restatement of Newton's law of cooling. Equation 3 states the battery's steady-state power dissipation is a linear function of the battery's temperature and the ambient … Continue reading

Posted in Batteries, Electronics | Tagged , , , | 3 Comments