Jul 29, 2010 #1 S seyyah Advanced Member level 2 Joined Oct 7, 2001 Messages 646 Helped 8 Reputation 16 Reaction score 8 Trophy points 1,298 Activity points 6,233 i need a circuit suggestion that can detect ac and dc 24V input and produces a dc output. Can you suggest me anything? No optocoupler will be used.
i need a circuit suggestion that can detect ac and dc 24V input and produces a dc output. Can you suggest me anything? No optocoupler will be used.
Jul 29, 2010 #2 E em2006 Newbie level 4 Joined Dec 30, 2007 Messages 7 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,307 a rectifier bridge
Jul 29, 2010 #3 keith1200rs Super Moderator Staff member Joined Oct 9, 2009 Messages 10,865 Helped 2,065 Reputation 4,130 Reaction score 1,596 Trophy points 1,403 Location Yorkshire, UK Activity points 57,270 You will also probably need a capacitor and discharge resistor. A single diode will suffice. If you need to interface to 5V you will also need some form of voltage limiting. Keith
You will also probably need a capacitor and discharge resistor. A single diode will suffice. If you need to interface to 5V you will also need some form of voltage limiting. Keith
Jul 31, 2010 #4 S seyyah Advanced Member level 2 Joined Oct 7, 2001 Messages 646 Helped 8 Reputation 16 Reaction score 8 Trophy points 1,298 Activity points 6,233 Ok, say i put a diode to the input what will be the peak voltage referenced to the circuit ground? Half of the 24Vac's peak?
Ok, say i put a diode to the input what will be the peak voltage referenced to the circuit ground? Half of the 24Vac's peak?
Jul 31, 2010 #5 keith1200rs Super Moderator Staff member Joined Oct 9, 2009 Messages 10,865 Helped 2,065 Reputation 4,130 Reaction score 1,596 Trophy points 1,403 Location Yorkshire, UK Activity points 57,270 A 24VAC signal normally means 24V RMS. That means you will get 34V peak so that is the voltage you will see, less a diode volts drop. Keith
A 24VAC signal normally means 24V RMS. That means you will get 34V peak so that is the voltage you will see, less a diode volts drop. Keith