Jumpers Flashcards
What do jumpers do?
Jumpers connect or disconnect circuit paths on a PCB to configure settings or options.
How do jumpers work?
By physically bridging two pins to complete or break a circuit.
What are the main types of jumpers?
Shunt-style jumpers and solder bridge jumpers.
What is a shunt-style jumper?
A removable connector that slides over two pins to make a connection.
What is a solder bridge jumper?
A permanent connection made by soldering a bridge between two pins.
What is the typical pitch of jumper pins?
2.54mm (0.1 inches)
What is a jumper block?
A set of pins designed to accommodate multiple jumper settings.
How are jumpers used in electronics?
To enable or disable features, select modes, or set addresses on a circuit board.
What is a multi-position jumper?
A jumper that can connect multiple sets of pins to select different configurations.
What is a header pin in relation to jumpers?
The pins over which jumpers are placed to establish connections.
How do you identify the correct jumper settings?
Refer to the circuit diagram or configuration guide provided with the device.
What is a jumper configuration table?
A chart specifying the jumper settings for different circuit configurations.
What tools are used for working with jumpers?
Tweezers, small pliers, and a soldering iron for solder bridges.
How do you clean jumper contacts?
Use isopropyl alcohol and lint-free cloth to remove dust and residue.
What is the purpose of a jumper block on a PCB?
To facilitate the selection of various circuit configurations.
What are the advantages of using jumpers?
They are simple, cost-effective, and allow for easy reconfiguration without software changes.
What are the disadvantages of using jumpers?
They can be prone to physical wear and require manual adjustment.
What is the difference between a jumper and a switch?
A jumper provides a semi-permanent connection, while a switch allows for easy, reversible changes.
What is a common use for jumpers in motherboards?
To reset BIOS settings or configure hardware options.
What should you check before adjusting jumpers?
Ensure the device is powered off and verify the settings with the documentation.
What can go wrong with jumpers?
Incorrect placement can cause malfunction, and poor contact may lead to unreliable connections.
How do you replace a faulty jumper?
Remove the old jumper and insert a new one with the correct configuration.
What are common sizes for jumper pins?
2.54mm pitch is standard, but other sizes exist for specialized applications.
How does a jumper affect circuit performance?
It can enable or disable specific features or adjust circuit behaviour.
What is the impact of incorrect jumper placement?
It can lead to improper circuit operation or damage components.
What is a soldered jumper bridge?
A connection made by soldering a small amount of metal to bridge two pads.
What is a jumper header?
A group of pins that jumpers are placed over to make connections.
How do you ensure proper contact with jumpers?
Align the jumper carefully and ensure it is seated firmly on the pins.
What is a jumper pin made of?
Typically, a conductive metal such as brass or copper with a protective plating.
What are alternative methods to jumpers for circuit configuration?
DIP switches, software-based settings, or programmable ICs.
