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Zero ohm resistors can also be used as configuration jumpers or in places where it should be easy to disconnect and reconnect electrical connections within a PCB to diagnose problems. The resistance is only approximately zero; only a maximum is specified, which is typically in the range of 10–50 m Ω . [ 2 ]
A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.
Through-hole (leaded) resistors Through-hole devices mounted on the circuit board of a mid-1980s Commodore 64 home computer A box of drill bits used for making holes in printed circuit boards. While tungsten-carbide bits are very hard, they eventually wear out or break. Drilling is a considerable part of the cost of a through-hole printed ...
Originally meant also as part marking code, this shorthand notation is widely used in electrical engineering to denote the values of resistors and capacitors in circuit diagrams and in the production of electronic circuits (for example in bills of material and in silk screens).
Axial-lead resistors on tape.The component is cut from the tape during assembly and the part is inserted into the board. Size comparison of axial-lead resistors. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
Common circuit diagram symbols (US ANSI symbols) An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may ...
The die from an Intel 8742, an 8-bit microcontroller that includes a CPU, 128 bytes of RAM, 2048 bytes of EPROM, and I/O "data" on current chip A circuit built on a printed circuit board (PCB) An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by ...
Schematic diagrams showing pull-up (PU) and pull-down (PD) resistors. When the switch is open, the PU/PD pulls the digital input voltage to Vcc or Vss, respectively. When the switch is closed, the digital input is connected to a low-impedance driving source, which may be a logic low or high level irrespective of whether the circuit has a PU or PD.