Basic Electronic Troubleshootng For Biomedical Technicians pot

[...]... of an electronic schematic How to Read Electronic Schematics Electronic troubleshooting requires expertise and understanding of electronic schematics The electronic schematic is a representation of the actual circuit in a written, symbolic form Schematics provide technicians with a tool to isolate and repair electronic devices The symbols on the schematic are similar to words in a book Therefore, the... found on the schematic Reading electronic schematics is an art form To become competent in understanding electronic schematics and how they relate to abnormal outputs, you must practice the reading process Over time, you will become proficient at this process and your troubleshooting skills will improve 24 Basic Electronic Troubleshooting for Biomedical Technicians Common Electronic Symbols Connectors... 70, section 410 The notation for hospital-grade power plugs is a green dot near the outside center of the hub All hospital-grade power plugs must be the three-pronged variety Most commercial electronic devices are equipped with two-prong plugs This can present some safety concerns if these devices are brought into hospitals 10 Basic Electronic Troubleshooting for Biomedical Technicians Three-Prong Plugs...2 Basic Electronic Troubleshooting for Biomedical Technicians Safety: The One-Hand Rule Due to the many hazards related to repair and maintenance of medical and consumer electronic devices, special safety rules such as the one-hand rule have been developed The premise of the one-hand rule... circuit across the chest and heart and returning through the 12 Basic Electronic Troubleshooting for Biomedical Technicians chassis (conductive case) of the device Safety analyzers: A test device used as part of an on-going preventive maintenance (PM) program and also to test devices entering a healthcare facility The basic safety tests performed are 1) ground integrity (impedance from ground pin to chassis)... Ungrounded _ _ j ~ Chapter 2: Reading Electronic Schematics j3 After completing this chapter you will have an understanding of • The application of resistor values • Common electronic symbols as they appear on an electronic schematic • Necessary electronic symbols to complete the circuits of an electronic schematic • The application of troubleshooting from Basic Troubleshooting Methods, based on... device and the bed railing or patient if the grounding is not unified 4 Basic Electronic Troubleshooting for Biomedical Technicians Macroshock and Microshock Electric Shock Electric shock is an unwelcome and avoidable physiological response to current Electrical stimulation may cause a cellular depolarization due to a change in membrane potential by approximately 20% The result can range from muscle contraction,... Magnetic Field LIM House Voltage Ground Return Line isolation monitor connected to medical devices (Unit 1 & Unit 2) commonly found in operating room settings for surgery and obstetrical operating suites 8 Basic Electronic Troubleshooting for Biomedical Technicians Figure Line isolation monitor with visible coil 1.07 Ground receptacle ~ / Wire windings Isolation of power sources to prevent the hazard of... understanding how each electronic symbol relates to the entire circuit or a portion of the circuit is known as "reading" the schematic The first step in reading an electronic schematic is a thorough understanding of electronic symbols If you don't understand electronic symbols, it's much like reading a book and not understanding some of the words in the book You must understand the electronic symbols in... 1000-10,000 Defibrillation Body Response Uncontrollable contractions of the ventricles (large muscles) of the heart Heart ventricles remain contracted, external burns, shock, death 5 6 Basic Electronic Troubleshooting for Biomedical Technicians Monitoring & Testing Devices Ground Fault Current Interrupters A ground fault current interrupter (GFCI) is the most common safety device found in hospitals The National . in operating room settings for surgery and obstetrical operating suites. 8 Basic Electronic Troubleshooting for Biomedical Technicians Figure Line isolation. system in a facility is a well-trained staff. 2 Basic Electronic Troubleshooting for Biomedical Technicians Figure 1.01 Safety: The One-Hand Rule