pictorial representations of electronic components in a schematic, such as a zigzag or rectangle for a resistor or a triangle for an opamp. The schematic contains symbols for every component in the design, with symbol in the schematic. A 12 Next, add a current-limiting resistor. Go back to the symbol chooser, but this time try searching for a resistor by entering R in the filter box at the top. Again, it is R device is an IEC- style rectangular resistor symbol. An R_US symbol is also available for users who prefer the ANSI-style zigzag symbol. Select a resistor symbol and add it to the schematic. Finally

or power pins. Passive A pin that is not connected to active electronics, for example pins on a resistor or connector. The default Pin Conflicts settings allow passive pins to connect to most other types checking the exclude from simulation checkbox in the Symbol Properties dialog. Inferred models Resistor, inductor, and capacitor models can be inferred, which means that KiCad will detect that they are documentation for more details about these models. Device sets the type of device to simulate: a resistor, BJT, voltage source, etc. This value is stored in the symbol’s Sim.Device field. Type selects

对话框，但只显示包含电源符号的符号库。 添加一个 VCC 符号和 GND 符号，然后用导线将它们连接到电路上。 Finally, add a label to the wire between the LED and resistor. Again, this may not be necessary in a simple circuit, but it is good practice to label important between the battery and the resistor — it doesn’t matter which. Press several times to expand the selection to include all the segments between the battery and resistor. Press to remove the connection

between the battery and the resistor — it doesn’t matter which. Press several times to expand the selection to include all the segments between the battery and resistor. Press to remove the connection

我们现在将放置第一个元件。单击右侧工具栏中的 放置符号图标 。您也可以按 添加符号热键 [a]。 6. 单击原理图工作表的中间部分。屏幕上将出现 选择符号窗口。我们要放一个电阻器。搜索/过滤 Resistor 的 R。 您可能会注意到电阻器上方的 设备标题。此 设备标题是元件所在库的名称，这是一个非常通用且有用的库。 7. 双击它。这将关闭 选择符号窗口。通过单击元件在原理图中的的位置将其放置在原理图中。 52. 对于 U1，选择 Package_DIP：DIP-8_W7.62mm 封装。对于 J1，选择 Connector：Banana_Jack_3Pin 封装。 对于 R1 和 R2，选择 Resistor_THT：R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical 封装。 53. 如果您有兴趣知道您选择的封装是什么样的，您可以单击 查看所选封装图标 以预览当前封装。

单击右侧工具栏中的 放置符号 图标 。 您也 可以按 添加符号 热键 [a]。 6. 单击原理图工作表的中间部分。 屏幕上将出现 选择符号 窗口。 我们要放一个 电阻器。 搜索/过滤 Resistor 的 R。 您可能会注意到电阻器上方的 设备 标题。 此 设备 标题是元件所在库的名称，这是一个非常通用且有用的库。 7. 双击它。这将关闭 选择符号 窗口。 通过单击元件在原理图中的的位置将其放 52. 对于 U1，选择 Package_DIP：DIP-8_W7.62mm 封装。 对于 J1，选择 Connector：Banana_Jack_3Pin 封装。 对于 R1 和 R2，选择 Resistor_THT： R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical 封装。 53. 如果您有兴趣知道您选择的封装是什么样的，您可以单击 查看所选封装 图标

or power pins. Passive A pin that is not connected to active electronics, for example pins on a resistor or connector. The default Pin Conflicts settings allow passive pins to connect to most other types values (voltage or current), resistor values, or the simulation temperature. To run a DC analysis, you must choose what type of sweep(s) to perform, which source(s), resistor(s), or temperature value(s)

In KiCad, reference designators consist of a letter indicating the type of component ( R for resistor, C for capacitor, U for IC, etc.) followed by a number. If the symbol has multiple units then

a specific design, or you may wish to move the location of a through-hole pad for an axial-lead resistor in order to fit a specific design. NOTE By default, the position of all footprint pads are locked