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Hi all,
After taking all of the advice, I have able to solve lots of the problems in my circuit even not fully solved but still have lots of improvement than before. Thank you so much.
Below are the waveform that I measured before and after the troubleshoot.
Before the troubleshoot:
After...
Hi Klaus,
Thanks for your reply. Ok noted about the solid GND plane and will make an improvement on that.
Thank you.
- - - Updated - - -
Hi,
Thanks fo your reply. The controller is used to control the current of the inverter. However, as for the preliminary test, I'm using an open-loop...
Hi all,
I'm currently work on a 1kVA full-bridge single phase inverter with SPWM current control. However, during my testing on open loop with lower rating test (60Vdc, Rload = 11.6ohm, Irated = 3A), I have problem at my high side switching pair (Q3). Attached are the schematic, pcb layout...
solar charge my laptop
Hi there,
First of all, u can't assume solar power battery charging as using ac supply since we know that solar power is not constant as ac supply. Ur controller will cut off at 11.6V because the battery is now at 20% state of charge and also to protect the battery from...
testing measuring solar panel
Hi there,
owh i see... If u think that ur battery is already fully charged, u have to disconnect the battery from charger and leave it about 1hour to get the actual of ur battery voltage. Normally the voltage u measure while charging will drop after charging. So...
getting long hours of charge on solar
Hi there,
If i'm not mistaken that u said ur laptop battery required about 18.5V right? And u are using a 20W solar panel which produced 12/13V and 1.6A. I think to charge a 18.5V of battery, ur solar panel should produce at least 19V with only 1.05A at...
help solar panel
hi there,
U did mention that ur solar panel only produce 0.64 to 1.1 Amp of current. Does this current u measure while charging ur laptop or only short circuit current that produced by ur solar panel? Since ur solar panel is only 20W and 1.6A max current.
additional..
what i try know is how to prove that my antenna design is a circularly polarized microstrip antenna. another one is, how the gain effect the antenna design? i means what should i explain if my antenna design is only have gain(abs) is 2.431dB and gain(theta) is 2.360dB. while for...
hi..
here i've attach the 3D view of RHCP and LHCP for my antenna..hope anybody can help me to explain how to obtain this antenna is circularly polarized.. or need to view from other dimension to obtain it? regarding to axial ratio, may i know how to obtain it?
hi,
thanks tyassin for your info. here i've attach the 3d of RHCP of my design. can u help me to ensure that this is a circularly polarized. sorry that i didn't attach the LHCP coz my design is for RHCP. can u help me?
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