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msovais said:hmm...in this case if i dont use that relay...can i use two simple relays with one transistor?
msovais said:im not been able to switch two single pole relays with one transistor(2n2222).
audioguru said:The relay might be a honking huge one for switching on a winch. The poor little 2N2222 will curl up and die.
pretty much, he has thrown a circuit at us, and is asking how to avoid using a relay, because he doesn't have one. wouldn't you think if the circuit COULD use transistors, they would, since transistors are much faster, and sometimes more reliable???Nigel Goodwin said:Well we are lacking almost all information!
hi hero,Hero999 said:Doesn't it clamp it to 0.7V below the supply not 0.7V above the supply?
Some of the biggest shocks I've had have been from playing around with transformers and large contactors. The moment you disconnect the battery from the relay the same current will cary on flowing, for an instant, and if you're in that current path it isn't nice. Currents above 5mA are considered harmful and can potentially kill you, however in practice when you interrupt the 20mA goint through a relay it only passed through you for a split second so it isn't too bad. but a big contactor with a current of 2A is a different story.