Quantcast SERIES REGULATOR

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
4-60 This is done by creating a voltage divider of a resistive element in the regulator and the resistance of the load. Regulation is achieved by varying the resistance of the resistive element in the regulator. A SERIES REGULATOR uses a variable resistance in series with the load. Regulation is achieved by varying this resistance either to increase or to decrease the voltage drop across the resistive element of the regulator. Characteristically, the resistance of the variable resistance moves in the same direction as the load. When the resistance of the load increases, the variable resistance of the regulator increases; when load resistance decreases, the variable resistance of the regulator decreases. SHUNT REGULATORS use a variable resistance placed in parallel with the load. Regulation is achieved by keeping the resistance of the load constant. Characteristically the resistance of the shunt moves in the opposite direction of the resistance of the load. The CURRENT LIMITER is a short-circuit protection device that automatically limits the current to a safe value. This is done when the current-limiting transistor senses an increase in load current. At this time the current-limiting transistor decreases the voltage on the base of the pass transistor in the regulator, causing a decrease in its conduction. Therefore, current cannot rise above a safe value. TROUBLESHOOTING is a method of detecting and repairing problems in electronic equipment. Two methods commonly used are the VISUAL CHECK and SIGNAL TRACING. The visual check allows the technician to make a quick check of component problems, such as shorts, discolored or leaky transformers, loose or broken connections, damaged resistors or capacitors, smoking parts, or sparking. The signal tracing method is used when the technician cannot readily see the problem and needs to use test equipment. Component failure is also important in troubleshooting. In transformers and chokes, a winding can open, or two or more windings can short, either to themselves or to the case that is usually grounded. In a capacitor only two things can occur: either it can short and act as a resistor, or it can open, removing it from the circuit. A resistor can open, increase in value, or decrease in value.


Electrical News
Silicon Valley Builds Bridge to Iran
Serial entrepreneur Kamran Elahian is organizing a Silicon Valley event...
eetimes.com
Friday Quiz: Transmission Lines
Signal integrity evangelist Eric Bogatin makes us think about what...
eetimes.com
EEVblog #656 – Auction Score
Lots of test equipment auction goodness. And is it possible...
eevblog.com
Low-Cost Cabinet Solution for Prototype Systems
Would cabinets made using a custom extrusion technique be good...
eetimes.com
Power Week: IRF Only One of Many Rumored Infineon Targets
Prior to this week's big announcement of Infineon's agreement to...
eetimes.com
Infineon Buys International Rectifier
Infineon Technologies will buy International Rectifier for about $3 billion...
eetimes.com
mCube Forms Indoor Navigation Subsidiary
Fabless chip company mCube has formed Ten Degrees Inc. as...
eetimes.com
EEVblog #654 – Sydney Maker Faire 2014 Behind The Scenes
Behind the scenes at the 2014 Sydney Mini Maker Faire...
eevblog.com
Don't Let Cables Zap You: Run a Hipot Test
Don't install unsafe cables. Make sure they've been hipot tested...
eetimes.com
Mesh Network Key to Winning IoT Race
As competing wireless networking technologies gun for the smart home...
eetimes.com
Creating a Vetinari Clock Using Antique Analog Meters
Can you imagine a clock formed from old analog meters...
eetimes.com
Microsoft Counters Google Chromebook
Microsoft is gearing up in its fight to bring Windows...
eetimes.com
Startup Promises Sub-$20 DNA Test
Startup InSilixa described a silicon bio-sensing array that promises to...
eetimes.com
Tech Insight: Hacking the Nest Thermostat
Researchers at Black Hat USA demonstrated how they were able...
eetimes.com
A Checkup from the Neckup
Who do you use as a sounding board? Jack Ganssle...
eetimes.com
China Wants to Be No. 1
China aims to produce half the semiconductors it consumes by...
eetimes.com
ARM Stressed in Server Bid
ARM servers will come more slowly and perhaps to fewer...
eetimes.com
EEVblog #653 – Sydney Maker Faire 2014 Highlights
Highlights from the 2014 Sydney Mini Maker Faire Introduction Video...
eevblog.com
Can IoT Integration Kill the Useless Clock Display?
Samsung's recent acquisition of SmartThings puts Samsung in position to...
eetimes.com
EU to Boost RFID Use & Privacy
Can the European Union protect consumer privacy with a new...
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 +