O.K. I'm getting closer to understanding what I need to do to create a timing delay using a 555 ic and 24VAC. I know I've got to rectify the 24VAC and that I will probably lose a volt or so there. Then I need to drop it down to where a 555 can handle it. I've seen some data that indicates there are 555's that can handle more than 5 VDC but 5 seems to be the common value.
My current (pardon the pun) questions. Is there a good source for 555's that can handle more power (making it easier/cooler for me to use a step down regulator)?
How much heat am I going to generate if I have to step down from 24 to 5 and power a 555 delay circuit and a relay coil (maybe 30 mAmp)?
My current (pardon the pun) questions. Is there a good source for 555's that can handle more power (making it easier/cooler for me to use a step down regulator)?
How much heat am I going to generate if I have to step down from 24 to 5 and power a 555 delay circuit and a relay coil (maybe 30 mAmp)?