SPICE-Simulation using LTspice IV

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) Much easier is the cursor method. Move the cursor to the desired point and look for the cursor’s change to a testclip. In this moment you get a message in the lower left corner of the screen with the node’s name ----------------------------------------------------------------------------------------------------------------------------------------------------- c) Much easier is to use separate diagrams for the different curves. Right click right on the presentation window and choose „Add Plot Plane“. voltage If necessary, repeat this procedure to get more diagrams. Now you get an additional diagram. Left click on it with the mouse to activate it. Afterwards click on the point in the schematic (f. i. the base of the left transistor) to present the desired But how to delete undesired presented curves: see the following chapter! ------------------------------------------------------------------------------------------------------------------------------ 3.3. Deleting Curves This is important to know if you present too much curves in only one diagram and you are loosing the overview. So a) Left click on the diagram to activate it -- the frame colour should change to a dark blue. b) Press F5 and the cursor will change to scissors. c) Move the scissors to the name of the undesired curve -- e. g. “V(n001)” above the diagram and click on it. The curve will disappear at once. Important: To measure another voltage in the schematic, please press at first „Escape“ on the keyboard to leave the delete function. Then click left on the schematic and watch that its frame changes to dark blue. If this is true, move the cursor to the desired point in the schematic until the form changes to a test clip…and so on.... --------------------------------------------------------------------------------------------------------------------------------- 8
3.4. Changing Curve Colours A very simple exercise....... ------------------------------------------------------------------------------------------------------------------------------------------ 9
Page 1 and 2: SPICE-Simulation using LTspice IV T
Page 3 and 4: 8. Project 4: U-I-Curves of Parts 4
Page 5 and 6: 1. Introduction Modern electronics
Page 7: 3.2. Presentation of Simulation Res
Page 11 and 12: Task: Make the voltage curve visibl
Page 13 and 14: Step 2: Enter the new border values
Page 15 and 16: 3.7. Differential Measurements Ever
Page 17 and 18: 3.9. Changing Part Values Now we wa
Page 19 and 20: 4.2. Changing Part Values This is d
Page 21 and 22: Now start the simulation, click on
Page 23 and 24: 4.3.3. The Impulse Response Fourier
Page 25 and 26: This is the correct presentation: -
Page 27 and 28: 4.4.2. Square Wave (f = 1691 Hz) St
Page 29 and 30: 4.5. Frequency Domain Simulation: A
Page 31 and 32: 5. FFT (= Fast Fourier Transformati
Page 33 and 34: Select Input Voltage V(n001) by a m
Page 35 and 36: 6.2. Important: creating SPICE Mode
Page 37 and 38: 6.2.2. Creation of the Symbol for a
Page 39 and 40: For an ideal transformer you can re
Page 41 and 42: Step 5: self-explainig…. 41
Page 43 and 44: -----------------------------------
Page 45 and 46: When simulating for 200ms, you will
Page 47 and 48: 8. Project 4: V-I-Curves of Parts 8
Page 49 and 50: 8.3. NPN Transistor In the „examp
Page 51 and 52: 8.4. N-Channel Junction FET First w
Page 53 and 54: In the simulation we would like to
Page 55 and 56: 9.2. Two Stage Broadband Amplifier
Page 57 and 58: 9.2.4. DC Bias If you want to know
Page 59 and 60:
9.2.5. Frequency Domain Simulation:
Page 61 and 62:
You will see this result and that a
Page 63 and 64:
Using the cursor you will find the
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Let us now draw the complete circui
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10.3. Use of Labels In general OP A
Page 69 and 70:
11. Project 7: DC-DC Converters Fir
Page 71 and 72:
11.2. The Step Up Converter The sch
Page 73 and 74:
If you want: vary the gate voltage,
Page 75 and 76:
11.4. The Step Down Converter In th
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SPICE-Simulation using LTspice IV

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