6 Threads found on edaboard.com: E 300 230
I have a HCPL-3700 optocoupler and I need to interface with a pic chip, basically I want to tell the chip when 230 volts is present.
I have been told that although the optocoupler has ac or dc input it is best to first convert ac to dc ?
Thanks in advance
Microcontrollers :: 03-12-2013 17:51 :: rizzy_dascal :: Replies: 12 :: Views: 2266
yes you can but VA rating of ups should be higher and you can't remove battery during operation
you can calculate your panel size that is around 300 W
battery size depends upon run time of motor
you need charge controller
autonomous day or hrs
Electronic Elementary Questions :: 03-19-2011 22:55 :: santoshaxl :: Replies: 1 :: Views: 614
You mean the input rectifier? Your circuit is typically used for 115 V mains voltage. By adding two diodes and a switch, you get a selectable 115/230 V input SMPS, with fixed 300 V bus voltage. It uses a 4-diode bridge rectifier for 230 V and the 2-diode doubler for 115 V. Small SMPS are often wide range 100 - 240 VAC, using a bridge (...)
Power Electronics :: 12-20-2010 04:13 :: FvM :: Replies: 4 :: Views: 1100
At a lower power level , I used a 12 to 300 V DC/DC converter and a commercial VFD controller supplied with 300 V DC instead of single phase 230 V AC. You may want to build your own VFD controller, but it doesn't pay for low quantities.
It's not particularly a problem to build a 1kW/12V input DC/DC with todays MOSFET transistors, but (...)
Hobby Circuits and Small Projects Problems :: 10-25-2009 18:41 :: FvM :: Replies: 1 :: Views: 1854
Power Electronics :: 08-20-2009 05:46 :: Dmitron :: Replies: 2 :: Views: 2075
does anybody know the standard ETSI ETS 300-230 and in particular the specifications of the modem FFSK @ 1200 bps?
Digital communication :: 02-21-2007 06:48 :: mowgli :: Replies: 1 :: Views: 1540