The short answer is yes, usually. If you are working with an ultra high voltage stack all bets are off. For old stereos, etc. you need to estimate the peak reverse voltage and the current requirements. If you have documentation, use it, otherwise: rule 1. PIV is 30 volts per plate, divided by the formfactor: rule 1a. Formfactors: diode=1, half bridge (center tap)=2, bridge=4. rule 1b. Use the maximum of the above and the input electrolitic working voltage multiplied by 1.4, then round up to the next standard voltage within reason (silicon is cheap). rule 2. Assume 500mA per square inch of a single plate's area. rule 3. You may need to heatsink the new rectifier, especially if the current is over a few hundred mA. rule 4. Replace the electrolitics!!!! If the unit is old enough to have a selenium, they are well past the warentee. rule 5. If the voltage is low (under 10VDC) you may need to put a small valued resistor between the rectifier and capacitor. example: a 12 plate center tapped rectifier 1.5 inches square; 12*30=360V divide by 2 =180PIV area=2.25 square inches which gives a current requirement of a little over one amp so use a 1.5A 200PIV unit.
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Selenium rectifiers, with their metal fins and long lived application in battery chargers and in tube type television sets are not intended to be repaired. Once a rectifier plate becomes damaged or it is burnt (unmistakable stink), the entire assembly should be replaced.
10 Boron Carbon Silicon Phosphorus Sulfur Arsenic Selenium Tellurium Iodine Astatine
Apart from Silicon, the following elements are considered as semi-metal(metalloids) :-BoronGermaniumArsenicAntimonyTelluriumPoloniumHowever, not all sources consider Polonium to be metalloid whereas some allotropes of elements like phosphorous, selenium etc. also show metalloidic behavior.
Jons Jacob was the man to discover Selenium.
conclusion of silicon control rectifier
It is a silicon-controlled rectifier, converting AC to DC for use in drawworks, mud pumps, etc.:silicon-controlled-rectifier
This compound is called selenium hexafluoride.
i got no idea mate
An SCR (Silicon Controlled Rectifier) acts like a switch when turned on. It can also be used as a rectifier.
Because when reverse biased it behaves like any other rectifier/diode.
Examples: germanium, selenium, tellurium, antimony, boron, silicon.
Anode is positive, cathode is negative
silicon controlled rectifier is a 3 terminal 4 layer device which has 2 consecutive P N junctions here the three terminals called anode, cathode and gate gate controls the conduction of the scr but diode just conducts in forward bias and blocks in reverse bias
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Because it is controlled by the gate current
For the same reason that its used in transistors and resistors...Its a semiconductor.