Jun 20, 2004 #1 L leonken Full Member level 3 Joined Jun 12, 2004 Messages 169 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 1,437 The specifications:
Jun 20, 2004 #2 E extraord Member level 4 Joined Mar 5, 2004 Messages 68 Helped 8 Reputation 16 Reaction score 2 Trophy points 1,288 Activity points 553 is there specified AC freq ?
Jun 20, 2004 #3 A alphi Advanced Member level 1 Joined Dec 23, 2001 Messages 413 Helped 11 Reputation 24 Reaction score 10 Trophy points 1,298 Activity points 3,212 Input AC frequency is very important! Pls tell me frequency,then we will give it solution.
Jun 21, 2004 #4 L leonken Full Member level 3 Joined Jun 12, 2004 Messages 169 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,296 Activity points 1,437 sorry, I forget the frequency .The typical frequency is about 100Hz. The range of frequency is from several tens to several hundrads Hz.
sorry, I forget the frequency .The typical frequency is about 100Hz. The range of frequency is from several tens to several hundrads Hz.
Jun 21, 2004 #5 rozerf Member level 1 Joined Apr 20, 2002 Messages 34 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 210 A rectifier bridge circuit followed by a switch-pump voltage regulator (like MAX660) might be an way for it. Switch-pump voltage regulators only require capacitors. Since no inductor allowed, the capacitance could be large, as well as capacitor's size. In case, if you need an very accurate DC output, a low voltage dropout linear regulator might be required.
A rectifier bridge circuit followed by a switch-pump voltage regulator (like MAX660) might be an way for it. Switch-pump voltage regulators only require capacitors. Since no inductor allowed, the capacitance could be large, as well as capacitor's size. In case, if you need an very accurate DC output, a low voltage dropout linear regulator might be required.
Jul 12, 2004 #6 I imported_Moderator Newbie level 5 Joined Jul 12, 2004 Messages 8 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Earth Activity points 63 for one miiliwatt use a zener with a 2.2 volt rating after the bridge