Mar 13, 2004 #1 J johnsonchong Newbie level 1 Joined Mar 13, 2004 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 8 current protection circuit I need a circuit to direct a 12-15 V power supply to another circuit which need a more stable 12V input signal This circuit should if shorted to grounded or the current drawn from it more than 160mA should have 0V output. I use a zener diode and three transistors with resistors to do it, but I failed. Could any one advise on this?
current protection circuit I need a circuit to direct a 12-15 V power supply to another circuit which need a more stable 12V input signal This circuit should if shorted to grounded or the current drawn from it more than 160mA should have 0V output. I use a zener diode and three transistors with resistors to do it, but I failed. Could any one advise on this?
Mar 14, 2004 #2 T tavakoli Member level 3 Joined Dec 31, 2003 Messages 66 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,286 Activity points 669 site:edaboard.com protection Hi It may be usefull using your zener in positive input of a opamp & a C.C buffer after the opamp with a feedback from its Emitter to negative input of opamp(may be unity gain). try it it may works! bye
site:edaboard.com protection Hi It may be usefull using your zener in positive input of a opamp & a C.C buffer after the opamp with a feedback from its Emitter to negative input of opamp(may be unity gain). try it it may works! bye
Mar 14, 2004 #3 X xxtigerxx Advanced Member level 1 Joined Jun 5, 2001 Messages 441 Helped 38 Reputation 76 Reaction score 32 Trophy points 1,308 Location Greece Activity points 2,890 current protect circuit you can use a swticher a good swticher national has a lot of good swticher.. e.c lm2754
current protect circuit you can use a swticher a good swticher national has a lot of good swticher.. e.c lm2754