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Transistor switching larger voltages?

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Alright, since I'm still a complete electronics newbie, I need to know if there's any super-easy way to make a smaller voltage (Say...From a microcontroller pin output) control a larger voltage through an NPN transistor. Probably pretty simple for someone with alittle more knowledge, so just enlighten me. :)
 

Sceadwian

Banned
Not really Artemis.. Solid state power electronics have come a long way in recent years. Excluding actual full scale power transfer lines solid state electronics can do everything a relay can and more.
 
Sceadwian said:
Not really Artemis.. Solid state power electronics have come a long way in recent years. Excluding actual full scale power transfer lines solid state electronics can do everything a relay can and more.
Well, in general, one would probably want to use relays for large voltages and AC. Even though some of the newer solid-state stuff could do it, I'd rather use the slightly older method.
 

Sceadwian

Banned
SCR's and triacs make solid state AC switching old hat for even 208 lines with multiple amps. They can be used in pulse aplications up to several thousand amps.
 
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