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: 2553
:-D Hello there,
I just wanted to use solar energy to run a 250 watt 230v ac motor.
and i want to know that can i use a UPS for this...because the UPS has 12v DC to 230v AC inverter, so that i can replace the battery with solar energy for 12 v DC i/p to the ups....
:roll:can i do this.... plz give me suggestions and schematics if possible..
Electronic Elementary Questions :: 03-18-2011 09:22 :: anuk07 :: Replies: 1 :: Views: 642
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: 1121
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: 1877
Power Electronics :: 08-20-2009 05:46 :: Dmitron :: Replies: 2 :: Views: 2109
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: 1554