Exercise 3.8.4 i About (a) For the circuit below, find the Thévenin equivalent circuit as seen by the 6 resistor connected between terminals (c, d) as if the 6 resistor is a load resistor connected to (but external to) the circuit. Determine the current flowing through that resistor. 4 A d 4Ω 6Ω a C 8Ω 10 Ω 4 Q 48 V b Feedback? w
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- Two batteries are connected in parallel delivering power to a power resistor. The first battery has an open circuit voltage of 12.6 V and an internal resistance of 0.2 ohm. The second battery has an open circuit voltage of 12.2 V and an internal resistance of 0.3 ohm. Find the maximum power delivered to the load resistance.150 100 + VA- a -4V AVA -7V 81. B b Figure 2 shows a simplified model of a gas-discharge lamp. One characteristic of these lamps is that they exhibit negative resistance; in other words, as current increases the voltage drops further, making such lamps inherently unstable. As such, a current-limiting ballast is required. For the connection shown in the figure: 1. Find the equivalent Thevenin circuit of the lamp. 2. Find the ballast resistance needed to limit the current drawn from a 24-volt source to 6 amperes.Use superposition to compute for the DC voltage levels for node B, C, and D. The dependent current source is equal to I1=hfeIb, hfe=177. What is the dc current Ib using superposition when 15V is turned on? when the 0.7V is turned on?
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