| 摘要 |
The fault-free detector of anomalous railway track, etc. dc. voltage levels has at least two contact-free monitors with a connector (6) and a comparator (9) checking for excessive voltage. The detector monitors the section of the track between two points along it. USE - In railway track signalling, etc. ADVANTAGE - The simplified design increases economy. PREFERRED - DESIGN The voltages expressed in binary form, generate a code word and there are more than four contact-free monmitors, while a transistor (16) is controlled by comparator (9) supplementing voltage dividers (12,13), a transistor (18), a resistor (19) and terminals (10,11). EMBODIMENT - The detection threshold voltage level is ca. one third the expected voltage level.(Dwg.3/2) |
