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MSU ECE 480 - Circuit Symbols

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Discrete Semiconductor DevicesIntegrated Semiconductor DevicesFlip FlopsRISING/ ASYNCHFALLING/ ASYNCHRISING0-LEVEL1-LEVELFALLINGSRJKMiscellaneousExample CircuitConstructing Circuit Schematics Using MS WordPlease send comments and suggestions to P. David Fisher at [email protected] of ContentsFlip flops Page 5Miscellaneous icons Page 6Constructing Circuit Schematics Using MS WordPrepared by: P. David Fisher and John A. KelleyDepartment of Electrical EngineeringMichigan State UniversityFile: circut_symbols_3.docRevised: 8/30/99OverviewStudents and faculty often need to document electric, electronic, and digital-logic circuitsby incorporating schematics into documents. To assist individuals in constructing circuits,we have consulted the appropriate IEEE standards for graphic symbols and thengenerated symbol sets that can be rapidly assembled to construct both simple andcomplex circuits.To construct circuit schematics using these symbols, one needs to know a little about howto copy, move, group, and rotate objects using MS Word. A good exercise for a beginnerwould be to copy the sample circuit given on page 7 of this report and paste this copy onthe workspace provided on page 8. Select the object, ungroup it and then take apart thecircuit. Once it has been taken apart, then re-assemble it in the workspace. Finally, groupthe individual elements (icons) to form a single object—i.e., the original circuitschematic. Finally, copy this object and paste it into a frame in a sample document.Once these skills have been acquired, the quality of the document will be enhancedsignificantly. It is recommended that circuit schematics drawn for one document be savedin a “circuit-template file.” By following this practice, one leverages writing projects offone another, and this saves time. This is so because future reports are much easier togenerate since existing circuits can be reused. For example, search the template file forsimilar circuit architectures and components, and then cut and paste to obtain the newcircuit.Please send comments and suggestions to P. David Fisher at [email protected] of ContentsCircuit symbols and useful schematic icons...............................................................Page 1Discrete semiconductor devices..................................................................................Page 2Integrated semiconductor devices...............................................................................Page 3Logic gates..................................................................................................................Page 4Flip flops.....................................................................................................................Page 5Miscellaneous icons....................................................................................................Page 6Sample circuit..............................................................................................................Page 7Workspace to practice and create circuit schematics..................................................Page 8Circuit SymbolsNote: Set your snap to 0.05” for these iconsR, L, C & SwitchesSpecial SymbolsVoltage and Current SourcesV kV mV VA kA mA A k m H mH H nHF mF F nFv11V11i11I11Example: V11 = 2.23 mV Example: V11 = 2.23 mVUnits1Discrete Semiconductor DevicesPNP BJT NPN BJT N-channelJFETP-channelJFETN-channel insulated-gate,depletion-type, internally-terminated MOSFETN-channel insulated-gate,enhancement-type, fourterminal MOSFETP-channel insulated-gate,depletion-type, four-terminalMOSFETP-channel insulated-gate,enhancement-type, four-terminal MOSFETNote: Set your snap to 0.05” for these iconsPN Junction DiodeZaner DiodeLight-emitting DiodePhoto-detectorDiode2Integrated Semiconductor DevicesPNP BJT NPN BJT N-channelJFETP-channelJFETN-channel insulated-gate,depletion-type, internallyterminated MOSFET N-channel insulated-gate,enhancement-type, four-terminal MOSFETP-channel insulated-gate,depletion-type, four-terminalMOSFETP-channel insulated-gate,enhancement-type, four-MOSFETNote: Set your snap to 0.05” for these iconsPN Junction DiodeZaner DiodeLight-emitting DiodePhoto-detectorDiode3Logic GatesNote: Set your snap to 0.05” for these icons4Flip FlopsSR JK D T 1-LEVEL 0-LEVEL RISING FALLING RISING/ ASYNCH FALLING/ ASYNCH SRClk1S1RSRClk1S1RSRClkSRClkSRClkSSSSRClkJKClkJKClkJKClkJKClkDClkDClkDClkDClkSRClkDSRClkJKSRClkJKSRClkDTClkTClkTClkTClkSRClkTSRClkTNote: Set your snap to 0.05” for these icons5SRSRUnclockedSR FlipFlopMiscellaneousLoadCoil unitload67Example CircuitFor practice, you might want to try replacing circuit components with other components, or adding on to this circuit.Note: the individual icons have been grouped to form a simple “object”. The object has been grouped with an invisible “framing” rectangle that then allows you to move the object and wrap text with increased ease. The figure caption has been constructed using a “text frame”.Figure 1. A simple RLC circuit schematic demonstrating the application of the circuit symbols to construct a circuit. This figure caption also serves as a model.L1 = 3.8 mHVS = 4 Vt = 0R2 = 2.2 kC1 = 4.8 FR1 = 1.2


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MSU ECE 480 - Circuit Symbols

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