Quantcast Figure 3-9.Wafer switch

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
3-10 Figure 3-9(A) shows one wafer of a wafer switch and its schematic symbol. Contact 1 is the point at which current enters the wafer. It is always connected to the movable portion of the wafer. With the wafer in the position shown, contact 1 is connected to both contact 5 and 6 through the movable portion. If the movable portion was rotated slightly clockwise, contact 1 would only be connected to contact 5. This arrangement is known as MAKE BEFORE BREAK because the switch makes a contact before breaking the old contact. Figure 3-9.—Wafer switch. Figure 3-9(B) is an illustration of the entire switch and its schematic symbol. Since the switch has two wafers mechanically connected by the shaft of the switch, the shaft rotates the movable portion of both wafers at the same time. This is represented on the schematic symbol by the dotted line connecting the two wafers. The upper wafer of the schematic symbol is the wafer closest to the control mechanism, and is identical to the wafer shown in figure 3-9(A). When switches have more than one wafer, the first wafer shown is always the wafer closest to the operating mechanism. The lower wafer on the schematic diagram is the wafer farthest away from the operating mechanism. Contact 9 of this wafer is connected to the movable portion and is the point at which current enters the wafer. In the position shown, contact 9 is connected to both contact 13 and 16. If the switch is rotated slightly clockwise, contact 9 would no longer be connected to contact 13. A further clockwise movement would connect contact 9 to contact 12. This arrangement is called BREAK BEFORE MAKE. Contact 9 will also be connected to contact 15 at the same time as it is connected to contact 12. Q9.   Label the switch schematics shown in figure 3-10A through 3-10G.


Electrical News
Why We Disagree with the IEEE's Patent Policy
The IEEE's new patent policy could slash royalty revenues and...
eetimes.com
Linux Seeks Security, Unity
Linux needs greater security, unity and interoperability to meet its...
eetimes.com
Friday Quiz: EE 101, Part 3
In this third installment from "Electrical Engineering 101," we look...
eetimes.com
Teensy-Weensy GPAK4 Mixed Signal FPGAs
For embedded designers who aren't familiar with FPGAs, Silego's teensy-weensy...
eetimes.com
Convince Me Why I Should Care About VR
When I go to a conference and see bobble-headed enthusiasts...
eetimes.com
OFC: Transceiver Module Spec Prevents Mismatching
A keyed CDFP optical module prevents cables from being plugged...
eetimes.com
Single-Chip FPGA-Based Embedded Vision & Fusion Analytics Solutions
The idea here is to perform 'processing on the edge'...
eetimes.com
Micron, Intel Flash 3D NAND
Micron and Intel have co-developed a 3-D flash NAND chip...
eetimes.com
ESC Minneapolis 2015 Sneak Peek! Baking Pis in Africa
Do you want to hear tall tales of rafting the...
eetimes.com
The Art Of Electronics 3rd Edition
25 years in the making, the bible of electronics is...
eevblog.com
Patent Suits Have Global Impacts
Companies found guilty of patent infringement, even those under an...
eetimes.com
Nanolaser Enables On-Chip Photonics
\Researchers at the University of Washington and Stanford has created...
eetimes.com
DARPA Robotics Challenge Gears Up For Finale
The latest highlights from DARPA's years-long robotics competition show us...
eetimes.com
Slideshow: The Best and Worst of Automotive Reliability
Consumers Union recently surveyed its members on the reliability of...
eetimes.com
Free Online Class Teaches Analog Design
A new online classroom from TI provides training and hands-on...
eetimes.com
It's Alive! It's Alive! Max's BADASS Display
When Max powers one of his projects up for the...
eetimes.com
Fear of Formication
Even the definition of formication can be deceiving, because this...
eetimes.com
MCU Vendors Engaging in Low-Power Leapfrog
Competition to be the low-power MCU leader has resulted in...
eetimes.com
Drones Eyed for Aid Missions
About a dozen volunteers have formed The Syrian Air Project...
eetimes.com
Intel's Xeon Phi to House 72-Cores
Intel's Xeon Phi mutiprocessor, with up to 72 cores and...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +