Feb 9, 2010 #1 W wozney Newbie level 2 Joined Mar 6, 2009 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,297 Im trying to find some help with a sim300 I think it needs to accept burst up to 2A. I have another device that it attaches to but that only outputs 0.4A. I need to be able to send SMS message Is there a way to up the 0.4A to 2A so the device can work properly this is the info i got from another topic "Your power supply MUST be able to supply 2A spikes for several milliseconds (I think 2 or 3ms)." Thanks for your help
Im trying to find some help with a sim300 I think it needs to accept burst up to 2A. I have another device that it attaches to but that only outputs 0.4A. I need to be able to send SMS message Is there a way to up the 0.4A to 2A so the device can work properly this is the info i got from another topic "Your power supply MUST be able to supply 2A spikes for several milliseconds (I think 2 or 3ms)." Thanks for your help
Feb 9, 2010 #2 M manenef Member level 1 Joined Nov 9, 2005 Messages 35 Helped 5 Reputation 10 Reaction score 2 Trophy points 1,288 Location kenya Activity points 1,577 A current transformer would suffice. take care to impedance match.
Feb 9, 2010 #3 W wozney Newbie level 2 Joined Mar 6, 2009 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,297 Would you be able to provide me a company that sells them. Also it can't be a large unit.. Needs to be small. Do they have units that are really small
Would you be able to provide me a company that sells them. Also it can't be a large unit.. Needs to be small. Do they have units that are really small
Feb 9, 2010 #4 GSM Man Banned Joined Apr 15, 2009 Messages 670 Helped 168 Reputation 338 Reaction score 94 Trophy points 1,308 Location New Jersey, USA Activity points 0 wozney said: I have another device that it attaches to but that only outputs 0.4A. Click to expand... What "device" do you have that outputs 0.4A? Typically, if you connect a large (>2,000uF) capacitor directly to the power pin of the SIM300 that will provide enough current for the 'bursts'. You should also have a 0.1uF cap on that pin.
wozney said: I have another device that it attaches to but that only outputs 0.4A. Click to expand... What "device" do you have that outputs 0.4A? Typically, if you connect a large (>2,000uF) capacitor directly to the power pin of the SIM300 that will provide enough current for the 'bursts'. You should also have a 0.1uF cap on that pin.
Feb 10, 2010 #5 R rongo024 Advanced Member level 4 Joined Dec 29, 2008 Messages 111 Helped 21 Reputation 42 Reaction score 19 Trophy points 1,298 Location Bangladesh Activity points 1,806 LM2576 regulator ic
Feb 11, 2010 #6 GSM Man Banned Joined Apr 15, 2009 Messages 670 Helped 168 Reputation 338 Reaction score 94 Trophy points 1,308 Location New Jersey, USA Activity points 0 rongo024 said: LM2576 regulator ic Click to expand... The LM2576 is rated for 3.0A output.
Mar 26, 2010 #7 B BuckySparks Member level 1 Joined Mar 20, 2010 Messages 36 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,286 Location Texas, USA Activity points 1,466 Page 7 of this app note has details on the transient load profile of gsm do not upload any file that is already available online and for free, give the link to the file only ..... MOD Aya2002 www.cpg.com.tr/.../28112007034111_wm_an_26_pwr_supply_v03.pdf
Page 7 of this app note has details on the transient load profile of gsm do not upload any file that is already available online and for free, give the link to the file only ..... MOD Aya2002 www.cpg.com.tr/.../28112007034111_wm_an_26_pwr_supply_v03.pdf