Basic Electronic Troubleshooting for Biomedical Technicians by Nicholas Cram, Selby Holder

By Nicholas Cram, Selby Holder

This e-book is helping technicians to appreciate digital fix difficulties with out introducing high-level engineering formulation. The booklet provides applications-oriented problem-solving recommendations in addition to pictorial representations that exchange complex theory-oriented and equation-intensive studying methods. There are chapters on business defense structures, AC/DC concept, studying digital schematics, semiconductor units, and tool offers.

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Columbus, OH: Merril, 2002. Floyd, Thomas, Principles of Electric Circuits. NJ: Prentice Hall, 1997. Fowler, Richard, Electricity Principles and Applications. NY: Glencoe, 1999. 4~ I CHAPTER THREE REVIEW QUESTIONS Name: -------------------------Date: --------------------------- 1. What is the frequency of a DC waveform? 2. S. has a frequency of _________ hertz. 3. A normal"sine" wave has a DC voltage of _________ volts. 4. Explain the difference between current and voltage. 5. Explain why resistance is a factor in determining current and voltage.

Reference "Ground" The term "ground" is probably the most misused and misunderstood term in electronics nomenclature. 10). This refers to a circuit path connected to the device that will carry current to an actual metal stake in the ground. All electrical circuits in a home or commercial facility have a true ground as part of the circuit breaker system. The round pin on a power plug connects to a wire that is attached to the chassis of a device. " When the power plug is inserted into the wall socket, the ground pin connects to a circuit, usually through a strap connected to metal pipe or conduit that eventually travels to the true ground metal stake in the ground.

O~--------------------~ ~ Time AC/DC Voltage and Current: Ohm's Law (V = IR) AC current and voltage have both a positive and negative component as the waveform moves up and down. AC current and voltage are delivered to a facility from the electric power company and each individual machine converts the AC voltage to the required DC voltage using a power supply. ) Voltage is a potential energy that becomes a force when a conductor (material that allows the flow of electrons) is present between a negative and positive pole or point on the circuit.

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