Control 24V relay using Arduino Mega (5V available and other side 24v required)

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i new arduino @ programming can turn on/off pins using other conditions , sensors value @ other side need 24 v operate.

what possible options  for turn on , off 24v source goes relay?
i heard pnp transistors not sure damage arduino pins ?
and if can transistor should use ??

and if following solution can explain me ?
http://kellykeeton.com/wp-content/uploads/2013/08/drive-relay.jpg

quote from: anand3994 on sep 01, 2014, 09:55 pm

i new arduino @ programming can turn on/off pins using other conditions , sensors value @ other side need 24 v operate.

what possible options  for turn on , off 24v source goes relay?
i heard pnp transistors not sure damage arduino pins ?
and if can transistor should use ??

and if following solution can explain me ?
http://kellykeeton.com/wp-content/uploads/2013/08/drive-relay.jpg
yes, that's correct way. relay using?


Arduino Forum > Using Arduino > General Electronics > Control 24V relay using Arduino Mega (5V available and other side 24v required)


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