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ECE250 Multiple-Diode Circuit Analysis Using the “0.7 V Battery Model” Ina de circuit containing one or more diodes, the 0.7 V battery model may be used to analyze the circuit using the following steps: 1. Define reference voltages across each diode which are referenced (+) at the anode and {-) at the cathode. Define reference currents through each diode which are referenced to enter the anode side of each diode. 2. Begin by making an “intelligent guess” as to which diodes are most likely ON and which diodes are most likely OFF. For the diodes that you guessed were off, replace them by OPEN CIRCUITS. For the diodes that you guessed were ON, replace them by 0.7 V batteries, which have their positive terminal on the anade side of the diode. 3. Next, analyze the resulting simplified circuit, where each diode is acting either as a 0.7 V battery or an open circuit, finding the current through each ON diode (0.7 V battery) and finding the voltage across each OFF diode {open circuit). 4. Now check the results of your analysis: a. For each diode assumed ON, the anode-to-cathode diode current MUST he POSITIVE. b. For each diode assumed OFF, the anode-to-cathode voltage must be < 0.7 V. c. If even one of these checks FAILS, you must loop back to Step 2 and make a new guess. However, you are guided by which check fails. i. ifa diode had been assumed to be ON, but its anode-to-cathode current came out negative, then you should assume that diode is OFF in your next iteration. ii, Likewise, if a diode has been assumed to be OFF, and its anode-to-cathode voltage came out above 0.7 V, you should assume that diode is ON in your next iteration. 5. Once all of the consistency checks of Part 4 are passed, you have determined the proper state of each of the diodes in your circuit, and your calculated diode voltages and currents are correct. Example of Applying this Method to a Multiple Diode Circuit 1. Consider the following 3-diode circuit. We are asked to find the node voltages V1 & V2, 
