Contact breaker
A contact breaker, or breaker are electrical contacts that open in a regular sequence and close a circuit and are executed in verschiednenen types depending on the application. They represent a special design of electrical switches offering is made between self breaker points, which interrupt in the structure as an oscillator running itself, and breaker points, which are controlled by external influences distinguished.
In many applications breaker contacts are in your function replaced by semiconductor switches as switching transistors, which can close and interrupt circuits without mechanical movements, achieve higher switching frequencies and have compared with breaker contacts a significantly lower wear. With breaker contacts as an electromechanical device, it is by the current on and off at a contact erosion that is caused by the switching arc.
- 2.1 Breaker
- 2.2 Blitzrad
- 2.3 Turbo inverter
Self- breaker contacts
Wagner's Hammer
The Wagnerian Hammer found inter alia in electro-mechanical bells and induction coils which are supplied with direct current from a battery application. At the bell, the mechanical contact movement is utilized to actuate a bell. Wherein said induction coil a high AC voltage is generated by the periodic interruption of the circuit by a transformer, which can be used for the production of sparks.
Deprez - breaker
The Deprez - breaker constitutes a development of Wagner's hammer, can be achieved with up to 40 interruptions per second.
Rogetsche spiral
The Rogetsche spiral is a historical design of a self- interrupter contact which was developed around the year 1835 by Peter Mark Roget. The arrangement consists of a vertically suspended wire spiral, similar to a mechanical spring, which is immersed in a cup at the lower end with mercury. By a current flow through the spiral conductor is there, according to the Lorentz force to an attraction of adjacent conductors in the spiral duct with the effect that the spiral contracts low. Characterized the lower end of the coil is pulled out of the mercury, it is thus an open circuit. As a result lacks the Lorentz force, the spiral relaxed again, immersed in the mercury, whereby the circuit is closed again and the process repeats itself periodically and the spiral this up and abschwingt.
Breaker contacts
Breaker
The contact breaker is used in the previously used electromechanical switches in the ignition system of a spark ignition engine. The internal combustion engine drives a camshaft to which the Breaker periodically in time with the engine rotational speed to open and close. By means of a coil as the ignition spark at the spark plugs in the combustion chamber may be initiated.
The Breaker has been almost completely replaced by semiconductor electronics such as the switching transistors in the automotive sector.
Blitzrad
The Blitzrad is a historical electromechanical arrangement includes an electric circuit at regular intervals, via a gear, and interrupts.
Turbo inverter
The turbo inverter is no longer a common form of an inverter is to convert DC voltage into AC voltage. As contact material here is liquid mercury to application.