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Hello All,
I am building an inverter using the microcontroller it works but I am getting a modified sinewave eventhough I used an LC filter with load in series with inductor and a capacitor (44uF, 400V) in parallel to the min load which is a 7W,110V bulb and I require a pure sinewave how can I...
Hello ALL,
My inverter is working I get 106 VAC with min load (ie. 7W light bulb) and my frequency s stable the issue is eventhough I used the MCU to create a sine table and placed the inductor in series with the load and the load parallel to the capacitor (22uF, 400V) not sure of the...
Can you tell me or calculate for me a suitable boot strap capacitor value for a DC bus of 180 V-dc please in order to get 110 VAC at the output of the inverter.
I am already getting 180Vdc across cap of LC filter in dc-dc converter. What is the difference between the SG1876 or the one in the diagram and the SG3525????
From my power supply when I measure the current I am getting 0.1A at 12V and at the dc-dc converter stage I am getting 180Vdc at 0.1A therfore I guess thats why it the dc-dc converter can only light up a 20W bulb since 180V x 0.1A= 18W and the 20W bulb drops the 180Vdc to about 165-170Vdc when I...
I am using the atmega32 so the carrier frequency is 8000Hz and the boot strap cap is a 47uF, 25V.Should I use the atmega16 instead with a switching frequency of 16000Hz??
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Can you calculate the Nsec for me please time is against me. So your'e saying I need 5 turns on pri at...
ALERTLINKS or any one else,
I used a 12V 5W car light at the output of the inverter and the bulb lights up but the voltage drops to 7V-AC and the FETs do not heat up and I used a 12V 17Ah battery at the input. I know the bulb is a resistive load so there will be a voltage drop. Also, without a...
ok the ferrite core I am using is from Jameco electronics part #:2160665 it is not a ETD34 I just matched the specs and they have the same max power of 321W so I based the turns off the ETD34 since jameco did not give the Ac hich is the cross sectional area.
What voltage should I get from the SG3525 OUTA and OUTB????? because these provide the gate drive for the IRFZ44N and so any voltage they output will be the same at the gate based on my tests.
I am not sure I understand. So you're saying that I have been building a buck converter but if that were the case I would be getting less voltage at the output however I am getting a much higher voltage at the output than the input which is characteristic of a boost converter. I understand why...
If my ferrite core max power is 321W in the dc-dc stage can I get a greater power by paralleling the push pull mosfets and would the transfomer be ok with???/
No it drops to 171Vdc with the 20W bulb but I assumed this was ok as the bulb is a resistive load hence there will be voltage drop. Also, the transformer no longer drops the voltage I think it was because I left out a air wire connect two grounds.
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I checked the voltage...
I get 180 Vdc from dc-dc converter which I fed into drain of h-bridge. I get ac output but not anything near 110 or 120 V-AC instead I get about 20 V-AC which is the same I got when I used low voltage varied from 12 to 16Vdc. What could be wrong?????
Hello,
I have connected the dc-dc converter of 181 Vdc to the inverter, the noise from the transformer has stopped and there is no flickering and I get an ac output but it is low like about 20 V-AC and a 20W bulb connected at the output with 14.9V input and about 12 V-AC with 12V input with no...
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