Post by thread:[EE]: Switching PSU

Hi I need schematic for switching PSU 220v to 16-19v @>3A. I will use any suggestions, so Pleeease send what you have. I'm not afraid to do some toroids sawing :-) 10x in advance Regards Tal Bejerano AMC - ISRAEL -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Tal, These things can be pretty dangerous. I would just go a buy one ;-) Tal {Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU]On Behalf Of Tal Bejerano - AMC > Sent: Monday, May 27, 2002 1:50 PM > To: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU > Subject: [EE]: Switching PSU - Need Helpppppppp! > > > Hi > > I need schematic for switching PSU 220v to 16-19v @>3A. > I will use any suggestions, so Pleeease send what you have. > I'm not afraid to do some toroids sawing :-) > > 10x in advance > > Regards > > Tal Bejerano > AMC - ISRAEL > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

I prefer to build it :-) Regards Tal Bejerano AMC - ISRAEL -----Original Message----- From: pic microcontroller discussion list [PICLISTKILLspamMITVMA.MIT.EDU]On Behalf Of Tal Dayan Sent: Monday, May 27, 2002 10:44 PM To: .....PICLISTKILLspam.....MITVMA.MIT.EDU Subject: Re: [EE]: Switching PSU - Need Helpppppppp! Tal, These things can be pretty dangerous. I would just go a buy one ;-) Tal {Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU]On Behalf Of Tal Bejerano - AMC > Sent: Monday, May 27, 2002 1:50 PM > To: PICLISTspam_OUTMITVMA.MIT.EDU > Subject: [EE]: Switching PSU - Need Helpppppppp! > > > Hi > > I need schematic for switching PSU 220v to 16-19v @>3A. > I will use any suggestions, so Pleeease send what you have. > I'm not afraid to do some toroids sawing :-) > > 10x in advance > > Regards > > Tal Bejerano > AMC - ISRAEL > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> I need schematic for switching PSU 220v to 16-19v @>3A. > I will use any suggestions, so Pleeease send what you have. > I'm not afraid to do some toroids sawing :-) There are many designs for such circuits on the web. Having a good search for such via Google and then discussing the results here would be a good approach. Here's a Google found starting point complete with circuit somewhat bit below your power level Uses ST electronics Viper IC. http://www.ednasia.com/index.php?article=0201De_f2 Makers of suitable ICs include Philips, Linear Technology, ST and just about everyone else as well. Suitable metal powder toroids are available which don't need sawing :-) Russell McMahon -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> I need schematic for switching PSU 220v to 16-19v @>3A. > I will use any suggestions, so Pleeease send what you have. > I'm not afraid to do some toroids sawing :-) There are many designs for such circuits on the web. Having a good search for such via Google and then discussing the results here would be a good approach. Here's a Google found starting point complete with circuit somewhat bit below your power level Uses ST electronics Viper IC. http://www.ednasia.com/index.php?article=0201De_f2 This article includes references to free design software from a number of suppliers. While such software is generally oriented towards the suppliers ICs they usually provide suitable general purpose design guidelines. Makers of suitable ICs include Philips, Linear Technology, ST, TI and just about everyone else as well. Suitable metal powder toroids are available which don't need sawing :-) Russell McMahon -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Tal Bejerano wrote: > I need schematic for switching PSU 220v to 16-19v @>3A. > I will use any suggestions, so Pleeease send what you have. > I'm not afraid to do some toroids sawing :-) >I prefer to build it :-) All computers have it. Just add few coils to 12v winding and replace capacitors. To regulate this voltage change resistor in 5V regulating loop. (Heat transformer before disassembling) I did it to 150v with XT power suply 10 years ago. It works. Price of a new computer AT power suply (China) with fan and case is about 10 $. If you prefer to build PSU 220v, better copy it. I agree with Tal Dayan: > These things can be pretty dangerous. > I would just go a buy one ;-) Mike Singer. _____ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads