Specification. Carbon brushes (parallel-sided) for use on commutator and slip-ring machines

1954 ◽  
Keyword(s):  
Slip Ring ◽  
Carbon Brushes

Research on a New Rotary Transformer Device

2014 ◽  
Vol 602-605 ◽  
pp. 2627-2631
Author(s):  
Sheng Li Xie ◽  
Jing Fang ◽  
Ying Jun Chang ◽  
Bor Ning
Keyword(s):  
Electromagnetic Induction ◽  
Synchronous Generator ◽  
Test Results ◽  
Prime Mover ◽  
Rotary Transformer ◽  
Slip Ring ◽  
Ac Power ◽  
Carbon Brushes ◽  
The Impact ◽  
Secondary Winding

Using the principle of electromagnetic induction, we designed the new rotary transformer device which secondary winding can rotate with the prime mover. The device not only achieves the purpose that provides synchronous generator with AC power of exciting side, but also can eliminate the impact of slip ring and carbon brushes fundamentally on the system. The test results of the prototype also show that the design of the rotary transformer described herein is possible.

Voltage Saturation Mechanism in V-I Characteristics for Natural Graphite Brush and Steel Slip-ring

2020 ◽  
Vol 140 (2) ◽  
pp. 117-127
Author(s):  
Yuki Amada ◽  
Takahiro Ueno ◽  
Koichiro Sawa ◽  
Noboru Morita ◽  
Kazuhiko Takahashi
Keyword(s):  
Natural Graphite ◽  
Slip Ring ◽  
Voltage Saturation

A Tough Self-Healing Elastomer with a Slip-Ring Structure

2020 ◽  
Author(s):  
Jun-Bo Hou ◽  
Zhi-Hui Chen ◽  
Shao-Xia Zhang ◽  
Zi-Jun Nie ◽  
Shu-Ting Fan ◽  
...  
Keyword(s):  
Ring Structure ◽  
Self Healing ◽  
Slip Ring

High-speed electrical sliding wear behaviors of Cu-WS2-graphite-WS2 nanotubes composite

2018 ◽  
Vol 25 (2) ◽  
pp. 343-351
Author(s):  
Gang Qian ◽  
Yi Feng ◽  
Jing-Cheng Zhang ◽  
Yang Wang ◽  
Tian-Ci Zhang ◽  
...  
Keyword(s):  
Wear Rate ◽  
Contact Resistance ◽  
Photoelectron Spectroscopy ◽  
High Speed ◽  
Electrical Current ◽  
Tangential Direction ◽  
Sliding Velocity ◽  
Graphite Composite ◽  
Slip Ring ◽  
Electrical Wear

AbstractCu-WS2-graphite-WS2nanotubes composite was fabricated by the powder metallurgy hot-pressed method. The effects of electrical current (5–15 A/cm2) and sliding velocity (5–15 m/s) on the electrical wear behaviors of the composite were investigated using a block-on-slip ring wear tester rubbing against Cu-5 wt% Ag alloy ring under 2.5 N/cm2of applied load. The lubricating effect of WS2nanotubes and composition of tribo-film were analyzed. The results demonstrated that the contact resistance decreases but the wear rate increases as electrical current increases, because the adverse effects of electrical current soften the materials at “a-spots” and damage the tribo-film. Due to the adsorption of gaseous molecule film on the tangential direction of slip ring surface, with the rise of sliding velocity, the contact resistance increases while the wear rate reaches the minimum at a sliding velocity of 10 m/s. The reasonable addition of WS2nanotubes into the Cu-WS2-graphite composite to replace WS2powder can result in a reduction of both contact resistance and wear rate. X-ray photoelectron spectroscopy (XPS) analyses revealed that copper oxides, graphite, WS2and WS2nanotubes in the tribo-film play the main lubrication action at the tribo-interface.

scholarly journals Oscillations of Carbon Brushes in Hand-held Electrical Tools

PAMM ◽  
2004 ◽  
Vol 4 (1) ◽  
pp. 123-124
Author(s):  
Shuiping Yan ◽  
Albrecht Eiber ◽  
Werner Schiehlen
Keyword(s):  
Carbon Brushes
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