bridgewire

This may improve the bridgewire performance in some applications.

A nichrome bridgewire can be used in some cases.

After successful firing, the bridgewire melts, resulting in an open circuit.

During this phase the electrical resistance of the bridgewire assembly rises.

Electric matches consist of two parts, a bridgewire and a pyrogen.

Carbon bridge is a thin spot of colloidal graphite used as the bridgewire.

If the pyrogen is sufficiently conductive, it can act as the bridgewire as well.

By passing an extremely high amount of electric current through the bridgewire, it gets rapidly vaporized, causing a small explosion.

(It is semispherical because the exploding bridgewire acts as a point-detonator.)

The bridgewire is usually made of gold, but platinum or gold/platinum alloys can also be used.

Some similar detonators use a thin metal foil instead of a wire, but operate in the same manner as true bridgewire detonators.

Some applications also use platinum-silver alloy; other bridgewire materials in use are platinum, gold, silver, tungsten, etc.

Kits include the thin wire needed for the bridgewire, such as nichrome wire, along with components for mixing the pyrogen.

Pyrotechnic initiators are often controlled electrically (called electro-pyrotechnic initiators), e.g. using a heated bridgewire or a bridge resistor.

For safety and reliability, exploding bridgewire detonators and slapper detonators are often used in aerospace technology instead of classical blasting caps.

Electric matches use a bridgewire consisting of a heating element to ignite a pyrogen, which is a quantity of readily ignited pyrotechnic initiator composition.

Nichrome is used in the explosives and fireworks industry as a bridgewire in electric ignition systems, such as electric matches and model rocket igniters.

The precise timing of EBWs is achieved by the detonator using direct physical effects of the vaporized bridgewire to initiate detonation in the detonator's booster charge.

A shallow notch cut into the center of the bridgewire promotes gross localized overheating instead of homogeneous heating of the entire bridgewire.

Both Match and Solid Pack type electric caps take a few milliseconds to fire, as the bridgewire heats up and heats the explosive to the point of detonation.

When sufficient electric current is passed through the bridgewire, the resistive heating causes the element to rise above the ignition temperature of the pyrogen, and the pyrogen begins to burn.

Explosive bridgewire or EBW detonators use a higher voltage electric charge and a very thin bridgewire (1 mm long, 0.04 mm diameter).

A bridgewire, bridge wire, or hot bridge wire (HBW) is a relatively thin resistance wire used to set off a pyrotechnic composition serving as pyrotechnic initiator.

Solid pack electric blasting caps use a thin bridgewire in direct contact (hence solid pack) with a primary explosive, which is heated by electric current and causes the detonation of the primary explosive.