ELEC2 – Thursday 07.09.2023 Pictures from the Whiteboard
Please NOTE: LTSPICE is also part of the written exam. It is part of the engineering skills you
need to show with electronics. You need to learn it.
MCA
Picture 1. Ideal and non-ideal OPAMP models MCA
Picture 2. MCA
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Picture 3. MCA
Picture 4. MCA
Picture 5. MCA
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Picture 6. MCA LT-SPICE
MCB
Picture 1. MCB
Picture 2. MCB
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Picture 3. MCB
Picture 4. MCB The LTSPICE simulation, with the currents too. And since the OPAMP don’t have a
model for current out, we use R3 with 1 miliOhm to simulate the Io = IR2 + IRL. Notice that
resistors can show current directions opposite to our convention that current flow away from the
highest voltage potential – then we must flip the resistor, if current is important.
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