Using Thevenin's Theorem, rewrite the physical network from Figure 7 as an equivalent Thevenin Network, i.e. express Veq as a function of Vo and V₁ and Req as a value. If the voltage sources Vo and V₁ are the outputs of digital pins on an Arduino (i.e. 0 volts or 5 volts), what are the four possible values of Veq? Vol Physical circuit over V₁ 3.3ΚΩ Vout Thevenin-equivalent circuit Vegl Req W Figure 7: Resistor Network for Thevinin's Theorem Vout

A 1) Consider the circuit at right, consisting of two LEDS (one red, one green), which you can model as “practical diodes" with VD= 2.0V (LEDS typically have larger VD's than ordinary Si or Ge diodes). R red green B a) If terminals A and B were connected to a DC source with voltage Vo, what would happen? (Consider applying in both polarities, i.e. +Vo and –Vo, and when VoVD...) b) If the terminals A and B were connected to an AC source with peak voltage VO, what would happen? (Consider both very low frequency: f<~1 Hz – and high-frequency cases.) c) If R = 1 k2, and both diodes have a maximum continuous power dissipation of 0.1 W and a peak inverse voltage VPIV = 20V, what is the maximum DC voltage VDCmax which can be safely applied between A and B?

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