Issue 274: EQ Answers

The answers to the Circuit Cellar 274 Engineering Quotient are now available. The problems and answers are listed below. Problem 1—What is wrong with the name “programmable unijunction transistor?” Answer 1—Unlike the original unijunction transistor—which really does have just a … Continue reading

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Issue 272: EQ Answers

The answers to the Circuit Cellar 272 Engineering Quotient are now available. The problems and answers are listed below. Problem 1—Why does the power dissipation of a Darlington transistor tend to be higher than that of a single bipolar transistor … Continue reading

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Issue 270: EQ Answers

The answers to the Circuit Cellar 270 Engineering Quotient are now available. The problems and answers are listed below. Problem 1: Given a microprocessor that has hardware support for just one level of priority for interrupts, is it possible to … Continue reading

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Issue 268: EQ Answers

Problem 1: A transformer’s windings, when measured individually (all other windings disconnected), have a certain amount of inductance. If you have a 1:1 transformer (both windings have the same inductance) and connect the windings in series, what value of inductance … Continue reading

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Issue 266: EQ Answers

EQ

The answers to the Circuit Cellar 266 (July 2012) Engineering Quotient are now available. The problems and answers are listed below. Problem 1—What’s the key difference between infinite impulse response (IIR) and finite impulse response (FIR) digital filters? Answer 1—An … Continue reading

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