Jan 14, 2010 #1 N newbie111 Member level 2 Joined Nov 29, 2009 Messages 51 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Location h.k Activity points 1,609 uln2803 hi the gnd pin of this chip uln2803 can i ignore it or hook it to the gnd? in proteus, this chip has no such pin i wonder in real circuit if i should connect it to the ground. Thanks
uln2803 hi the gnd pin of this chip uln2803 can i ignore it or hook it to the gnd? in proteus, this chip has no such pin i wonder in real circuit if i should connect it to the ground. Thanks
Jan 14, 2010 #2 betwixt Super Moderator Staff member Joined Jul 4, 2009 Messages 16,240 Helped 5,140 Reputation 10,309 Reaction score 5,122 Trophy points 1,393 Location Aberdyfi, West Wales, UK Activity points 137,444 Re: uln2803 The ground is the common current connection for inputs and outputs so it normally must go to 0V. The common diode connection must be left open circuit or be connected tp a voltage no lower than the load supply. Brian.
Re: uln2803 The ground is the common current connection for inputs and outputs so it normally must go to 0V. The common diode connection must be left open circuit or be connected tp a voltage no lower than the load supply. Brian.
Jan 14, 2010 #3 M!k Advanced Member level 2 Joined Apr 22, 2002 Messages 681 Helped 109 Reputation 218 Reaction score 35 Trophy points 1,308 Activity points 4,823 Re: uln2803 I don't know Proteus, but if you look at the Motorala datasheet there's an internal schematic of that device (figure 12). Of course you've to connect the GND pin.
Re: uln2803 I don't know Proteus, but if you look at the Motorala datasheet there's an internal schematic of that device (figure 12). Of course you've to connect the GND pin.
Jan 14, 2010 #4 N newbie111 Member level 2 Joined Nov 29, 2009 Messages 51 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Location h.k Activity points 1,609 Re: uln2803 Thank you.