Quantcast Figure 2-7.Cutoff in a conventional tube

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
2-7 Figure 2-7.—Cutoff in a conventional tube. In view B, a bias voltage of -6 volts is applied to the grid. As you can see, some of the electrostatic lines of force are attracted to the negatively charged grid wires while the rest pass through the grid spacings. Because there are fewer lines of force reaching the cathode, there are fewer paths for electrons to use to reach the plate. As a result, conduction through the tube is decreased. In view C, the negative potential of the grid has been raised to -20 volts, which drives the tube into cutoff. All of the electrostatic lines of force terminate at the negatively charged grid, instead of continuing on to the cathode. The electrons emitted by the cathode will not feel the electrostatic attractive force of the positively charged plate. Under these conditions, current cannot flow through the tube. Now look at figure 2-8. Here you see a diagram of a variable-mu, or remote-cutoff, tube. The only difference between the remote-cutoff tube depicted and the sharp-cutoff tube is in the grid wire spacing. In the conventional sharp-cutoff tube, the grid wires are evenly spaced, while in the remote-cutoff tube the grid wires in the middle of the grid are placed relatively far apart. This is shown in view A.


Electrical News
Friday Quiz: Name That 1994 Test Instrument
If you can remember back to 1994, then take a...
eetimes.com
It's a Bird. It's a Plane! It's a Drone!!
EE Times has gathered a panel of drone experts, including...
eetimes.com
Firework display as seen through the eyes of a drone
Have been thinking about purchasing a drone? If so, watching...
eetimes.com
FinFETs + FD-SOI Proposition: May Save Power
Ron Martino, vice president of application processors and advanced technology...
eetimes.com
Biodegradable Electronics Debut
Single crystal silicon transistors operating in the same microwave frequency...
eetimes.com
DesignCon 2016 Abstract Deadline Extended
You now have until Wednesday, July 8 so get your...
eetimes.com
IBM Makes Lake George World's Smartest Lake
Over 60 researchers, including ones from IBM and Rensselaer Polytechnic,...
eetimes.com
Developing Safety Certified Code for Industrial Systems
The right design framework and RTOS can help simplify and...
eetimes.com
Intel President, Execs Step Down
Intel President Renee James is among several top executives who...
eetimes.com
High-Speed Converters Aid Record Terabit Field Trial
Ultra high-speed digital-to-analog and analog-to-digital converters from Socionext Inc. (Yokohama,...
eetimes.com
Speech Recognizer / Synthesizer Shield for Arduino & Other MCUs
A Kickstarter project the just launched promises a rather interesting...
eetimes.com
Want a Free GPAK4 Mixed-Signal FPGA Development Kit From Silego?
25 GPAK4 mixed-signal FPGA development kits will be given by...
eetimes.com
IMB-GlobalFoundaries Deal Finalized
Following final approval by U.S. regulators, IBM closed the sale...
eetimes.com
20% Discount for ESC Silicon Valley 2015 Using Secret Code
Max's top-secret-squirrel code for the forthcoming ESC Silicon Valley 2015...
eetimes.com
UWAS: Playing Hide and Seek with Drones
The Paris Air Show (June 15-21) was rich in drone...
eetimes.com
AWS Building Massive Data Center In India
AWS is planning to build a massive data center in...
eetimes.com
Nanogenerator Harvests Energy From Rolling Tires
Researchers at the University of Wisconsin-Madison (Madison, WI) have developed...
eetimes.com
ZF Sets Course to Driver Assistance
Having just completed the takeover of TRW Automotive, mechatronics giant...
eetimes.com
EEVblog #761 – Pebble Time Smartwatch Teardown
What’s inside the new Pebble Time Smartwatch? Dave does a...
eevblog.com
EEVblog #760 – Pebble Time Smartwatch Torture Test!
Dave takes the new Pebble Time Smartwatch through the 2015...
eevblog.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 +