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Re: Help needed: To understand SMPS mobile charger schematics.
(i) ...according to datasheet that seems ok...
(ii) ...couldn't find it's datasheet, So can't say anything...but if it's high voltage switching NPN transistor then it should be ok...
...And about the 0V...
...well i have never...
Re: Help needed: To understand SMPS mobile charger schematics.
... :) happy to hear that you found this "reverse engineering" kind of project useful...
...though i've completed the project, but still experimenting with the transformer to understand the basics...because i'm just an enthusiast...
Re: Can 89S programmed using USBasp?
...you can try this...
A USB AVR/ ATmega/ AT-89-S-51 Programmer + ISP/ ICSP Capability - Blogs - Forum for Electronics
Re: Help needed: To understand SMPS mobile charger schematics.
...destiny wanted me to find the solution for this... ;) ...so somewhat i did...
...the following link says that how this MJE13003 and the feedback winding forms a switching circuit the frequency of which is determined by their...
Hi,
Here posted is a cheap mobile charger schematics based on power transistor 13001 (NPN), and output is 6.4V 0.350A which gives 2.24Watts output. I'm planning to modify this circuit to get 24v 0.250A which comes to be 6Watts output while the limit of this power transistor is 7Watts. Obviously...
...hi, i'm using AVR Studio/ GCC + WinAVR...and using function as n=rand()*6, trying to generate any random number between 0 to 5 but the problem is everytime my MCU gives me the same sequence of "random" numbers e.g. {6, 5, 3, 1, 4, 2 ...and it repeats}...so can someone help to generate real...
...hi hassan, i've been able to download some software from the same link which contains all the necessary drivers and some development support also...so i think this should provide all the necessary drivers to run your cable too...please check it out...i've uploaded the file at the following...
...hi thannara, you can find the schematics and build instruction here,
https://www.edaboard.com/blog/353/ (the same is mentioned in my post just 2-3 posts above your's)...
...it works on SPI protocol and you can find more details here...
Serial Peripheral Interface Bus - Wikipedia, the free...
...hassan, PCs generally have the SERIAL ports, but generally the laptops doesn't have them...so if your PC have one then use it with the programmer...or your converter cable should work great with laptops/ usb ports...if you intend to make a programmer yourself then try this out...
...hi nikhil, read my following post at any of the two links provided below and you'll know everything you should, make sure you don't miss anything in the article...won't take more than 2.5mins...and to answer your query directly, read last few paragraphs...
https://www.edaboard.com/blog/353/...
Re: Can 89S programmed using USBasp?
Hi Angel,
If your question was "whether 89-S-51 and 89-S-52 are compatible?" then answer is "Yes".
And you can use PIC microcontrollors instead of ATmels if you wish.
Hope it helps.
Hi All,
Happy to inform you that 89-S can be programmed using USBasp...
...why don't you drill small holes and setup 3 to 9 LEDs...and the focussing would be done by the reflector surface...this will not only give you more battery life but more light too...
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