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Silicon controlled rectifier (SCR) basic parameter
From;  Author:Stand originally
〖 article reprints or website of technology of electron of China of provenance 〗 ≡ ≡ network address: One-way silicon controlled rectifier of Www.EC66.com is basic parameter

The choice, main parameter that the attention wants when using one-way silicon controlled rectifier has:

One, rated on-state is average voltaic IT(AV)
Come loose in what environmental temperature is 40 ℃ and regulation load of hot condition, pure resistor, component guides current flow angle is more than oneself at 170° report angle, half electric current is in the sine of single-phase labour frequency that place of silicon controlled rectifier allows the biggest average inside a cycle.
2, on-state is average voltage UT(AV)
In the regulation environment, temperature comes loose below hot condition, component is connected with rated on-state average electric current, when knot lukewarm stability, positive pole presses average with the report between cathode.
3, control pole touchs hair voltage UGT
Below room temperature, when 6V tension is being increased between positive pole and cathode, make silicon controlled rectifier from end turn into to guide completely a wants the smallest control extremely volts d.c. .
4, control pole touchs IGT of hair electric current
Below room temperature, when 6V tension is being increased between positive pole and cathode, make silicon controlled rectifier from end turn into to guide completely a wants control extremely electric current of the smallest direct current.
5, off-state repeats UPFV of peak value voltage
It is below the condition that control pole disconnects and breaking to block, the Zheng Xiangfeng that bring to bear on can repeat to be worth voltage between positive pole and cathode. Regulation of its numerical value falls for off-state 80% what repeat UPSM of peak value voltage.
6, repeat UPRV of peak value voltage reversely
It is below the condition that control pole disconnects, the voltage of retrorse peak value that bring to bear on can repeat between positive pole and cathode. Regulation of its numerical value is 80% what do not repeat URSM of peak value voltage reversely. Regard the rated voltage of component as the lesser numerical value in UPFV and UPRV commonly.
7, maintaining voltage IH
Mix in room temperature when control pole opens circuit, silicon controlled rectifier falls from bigger on-state electric current the smallest electric current that comes to just can maintain component to be in on-state, it is commonly a few to more than 100 MA. If pass be less than this value to electric current, silicon controlled rectifier cannot continue to maintain guide connect and end by oneself.