Thursday 28. January 2010
Three Point contace bridge
Modelrailroad technical lexicon: Three Point contace bridge
Typical three-point contact bridge on a Elektronikplantine
A Three Point contace bridge is an electrical plug device with which of two possible modes of operation can always read a selected by plugging a jumper. Often such Three Point contace bridge be used in older locomotives to switch, for example, between analog and digital operation or operation between the current collection on the track and the current collection by the overhead wires.
The latter is, for example, in the classic E-Locomotive Marklin H0 Re 4 / 4 case. With modern engines with a mechanical adjustment options such Three Point contace bridge by the electronic programming of the configuration variables to be replaced. This has the advantage that the model for switching will no longer be open and comfortable are not just two but a whole range of operational situations adjustable.
The principle of Three Point contace bridge can also be found on many PC motherboards to be made using a jumper (short-circuit connector) is selected between two contact positions. Particularly well known is on the PC board with the selection Three Point contace bridge "CMOS Clear" and "holding position".
