mashersmasher
New Member
i know, relays are a bit retro for most people but they have a few advantages for high voltage/current applications. i like using relays for drive motor control since it lets me use pretty much whatever power sources i have on hand whithout the need to regulate it (except for the electronics which you would probably need to do anyway) and the kind you stick in cars often take pretty kindly to being flicked on and off in pulses. the only downside is that they have a lower reaction speed (seing as they're mechanical) and can't pulse as fast as a transistor. i use car relays with 110 ac with no problem all the time and they work great.