Sep 30, 2015 #1 A ata90 Member level 5 Joined Apr 13, 2009 Messages 89 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,945 Dear Friends, As we know, for varing rms voltage of AC load, we can use dimmer. what changes should we do to have bellow voltage on DC load? Any helps will be appreciated. Thank you
Dear Friends, As we know, for varing rms voltage of AC load, we can use dimmer. what changes should we do to have bellow voltage on DC load? Any helps will be appreciated. Thank you
Sep 30, 2015 #2 schmitt trigger Advanced Member level 5 Joined Apr 17, 2013 Messages 2,725 Helped 859 Reputation 1,722 Reaction score 850 Trophy points 1,393 Activity points 18,445 You have to average it with an inductor-capacitor flter. The thing is, the soft synced trigger circuit (with a DIAC) will not work. You have to provide hard synced trigger pulses.
You have to average it with an inductor-capacitor flter. The thing is, the soft synced trigger circuit (with a DIAC) will not work. You have to provide hard synced trigger pulses.
Sep 30, 2015 #3 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,421 Helped 4,881 Reputation 9,783 Reaction score 5,593 Trophy points 1,393 Activity points 170,308 Hi, homework? You want the phase controlled rectified waveform at your load, or pure DC? Klaus
Sep 30, 2015 #4 A ata90 Member level 5 Joined Apr 13, 2009 Messages 89 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Activity points 1,945 KlausST said: Hi, homework? You want the phase controlled rectified waveform at your load, or pure DC? Klaus Click to expand... Actually I want a waveform that doesn't have negative cycle. please see image bellow:
KlausST said: Hi, homework? You want the phase controlled rectified waveform at your load, or pure DC? Klaus Click to expand... Actually I want a waveform that doesn't have negative cycle. please see image bellow:
Sep 30, 2015 #5 D.A.(Tony)Stewart Advanced Member level 7 Joined Sep 26, 2007 Messages 9,150 Helped 1,831 Reputation 3,661 Reaction score 2,232 Trophy points 1,413 Location Richmond Hill, ON, Canada Activity points 60,280 FW diode Bridge to SCR with RC DIAC gate trigger from line voltage not from SCR, which drops to 1V.
Sep 30, 2015 #6 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,563 Helped 14,761 Reputation 29,805 Reaction score 14,138 Trophy points 1,393 Location Bochum, Germany Activity points 298,719 Move the load from rectifier input to rectifier output.
Sep 30, 2015 #7 D.A.(Tony)Stewart Advanced Member level 7 Joined Sep 26, 2007 Messages 9,150 Helped 1,831 Reputation 3,661 Reaction score 2,232 Trophy points 1,413 Location Richmond Hill, ON, Canada Activity points 60,280 Something like this ( 2 options) With external or internal snubber. Diodes(4) peak A rated for 5x the average motor load current for duration of acceleration (seconds) and suitable heatsink.
Something like this ( 2 options) With external or internal snubber. Diodes(4) peak A rated for 5x the average motor load current for duration of acceleration (seconds) and suitable heatsink.