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Thank you very much Charles Linquis. I will try to do this.

I couldn't understand that opamp level shifter circuit. Please give me an example

This circuit can help.

I would like to measure a voltage between VCC and Mosfet's drain. How can i succeed with a PIC? I couldn't know where i put the deviders and how i write the codes. I can use adc functions well.

18F458 is working very well with the same code but 18F4620 is not. I think there is a PIC bug.

Thank you very much for valuable helps. The last code was the same. I will research more. Maybe one mounth later i will work with other PIC wich have not got big bugs if I can't succeed.

Best...

Hi Bruce , Thank you for interest.

The problem is not simulation. I have just tried your code on the proto board. It is not working. I programmed your code. Nothing was changed.

Did you use...

Hi Bruce thank you for reply, It is not working. I think something is wrong or missing for this situation.

Hi rodstar, that is possible. Deadtime is very important for me. I have to put a...

Hello my friends,
I would like to drive two mosfets which are built Half Bridge. I have read whole forum but i can't succeed. The code and ISIS file is attached. The circuit on the proto board is...

I have uploaded my circuit. When i use a diode instead of Q2 it works but i see little voltage about 13V with %98 duty cycle. How can I add Q2 to the circuit and drive them synchroniously. I use...

Hello,
I would like to drive a synchronous two mosfets which work as buck converter. The pwm source is a PIC mcu. How can I drive properly without a IC.

Regards

Of course my target is MPPT project. But I didn't understand anything. I have got some idea about MPPT in theory but not in code level.

Nobody have to help in this point. Also I don't know if it is a problem wishing a code translation. But please help me. I would like just to know if there is an error in this code.

Hello my friends,
I have just found a code about MPPT. I couldn't translate in Picbasic. I suppose an error in adjusting pwm duty. If you can translate the code i will be very happy. Thank you for...

I don't know how much i can thank you. I understood everything.
Last night I see MPPT charging technic. I was happier. They are famous style to get maximum efficiency. You are expert.

Best...

Hi chuck,

Thank you for charging ideas wihch i know. I want to know some details about mackrackit's booster charger.

Will I see normal charging values like conventional circuits. I'm trying to...

Please give me more detail for first sentence.

Thank you my friend,
I will set to 14.2V. When i connect the battery the voltage will drop. So will IC set 14.2V itself. Namely will we see 14.2V during charge?

By the way, I think you forget my...

hi again.
I see in the lm3588 datasheet. I understand that i can send pic pwm signal to the freq/adj leg (pin 1).

But sould i use lm3588 ADJ version. Because we don't need 12V regulated.

Ok.

I have a 12V 7.5Ah SLA battery and L200 IC constant voltage charge circuit. My voltmeter shows me 14.5V witout the load.I connect the circuit to the emtpy battery i see 11V and when the...

It sounds like it is very smart technic for a charge system for a changeable source like solar system. I have started research boost technics. Do you use only an MOSFET/TRANSISTOR, inductor and...

Hello again mackrackit,
When we use boost circuit and in a cloudy moment the boost circuit give us what we need. But what about the current? At this moment will the current be enough to continue the...

mackrackit,
Thank you again and again.
Best regards

The end of your comment is most important thing to use the maximum solar energy. But would like turn back to PWM. Generally, what frequency is used for battery charging ?

Best regards

No it is for a solar system. My mini panel supplu 18V without load. And shortcircuit current is 1.5A.

Is PWM usefull for this supply voltage?