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Thank you for your replies!
I was afraid of so much guessing...
Thanks for the tip! I will do this.
What I still don't understand is if the battery is labeled 7.2V and 2000mAh, is it OK to charge it at 8.4V as written by FvM earlier? And is the 800mA charge current OK with the 1.7A...
So your suggestion would be to design the charger for 7.2V?
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Indeed, the original charger has an integrated circuit 084P03-543 from NEC. I couldn't find its datasheet, and neither do the suppliers have it available. Considering that it is a 30-pin IC I believe it is some...
The battery I want to charge is NNTN4497 from Motorola. Unfortunately I don't have the battery datasheet and the manufacturer seems rather secretive... I don't find the charging requirements.
I found the charger specifications...
Hello,
I am working on a project to design a charger for Li-ion batteries 7.2V 2000mAh. I am not a battery expert, so any help is welcome
I studied some tutorials regarding charging the Li-ion batteries. How should I determine the charging requirements? The original charger outputs...
OK, finally I've got it :)
The best solution is actually with Mason's rule. OpAMP + C form a losless integrator which will be the direct gains of a block diagram/signal flow graph. Feedback gains are the feedback resistor values (assuming the resistors at the OpAMP inputs are unity). Then...
Hello,
For some time, whenever I start Matlab R2007b, it keeps initializing for 10-15 minutes. After its over, I want to run any simple commands, e.g. a+b, and keeps busy for minutes until I get teh result.
Where could teh problem be? I triend uninstalling and then installing matlab. It...
Hello,
I am also trying to compute the THD for an OTA with Spectre.
The posts are all very useful for THD simulation. It helped me a lot!
Could you please tell me what "number of samples" means. Could you please give me a numerical example.
Thanks
I'm also trying to run pspice from the command line. But, it says that it won't recognize pspice as an internal command. I have also installed LTspice and Winspice, but nothing... Could you please give me an example ?
Well, I've (finally) figured this out, so should anyone be interested, I'll just list the code as follows. Then I have another question.
.ac dec 100 1m 10
.extract ac label=vmax max(vdb(vop,von))
.extract ac label=frecv xdown(vdb(vop,von),extract(vmax)-3)
.sensac v(vop,von) freq=extract(frecv)...
Hello,
I am trying to write the sensitivity analysis code in eldo for a flf filter topology. I've tried the following set of statements:
.ac dec 100 1 10g
.plot V(vop,von)
.extract (V(vop,von),2.97meg)
.sensac V(vop,von) freq=2.97meg
However, I don't seem to get any result.
Could you please...
Hello.
I am designing a general FLF filter topology. I need it for filter design with genetic algorithms, so I thought the topology should be as general as possible. Consequently, I added leap=-frog connections of all possible orders (2, 3...etc).
I have attached my schematic for a FLF with 8...
Well, a capacitor of uF is MUCH MUCH to big for Gm-C circuits. Try using only pF caps if you design specifications allow this. A rule o thumb (and nothing scientific in this statement): the bigger the capacitor, the lower the BW.
On the other hand, you can (slightly) adjust the integrator...
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