rajabi

hello thanks a lot for your answer as soon as possible but I can not found the op-amp IC you mention in your new circuit. Do you know any other IC's that I can put in the new circuit? About the 35V Transformer except of 28V Transformer it is Important for me because I most pay money again for new transformer and it is a little bit difficult... Best Regards

Thank you a lot for your answer It is so difficult for me to find the final version of your project in this thread and in another thread in the forum because my English is too weak and it take so mach time therefor if it is possible give me the final version of circuit or link me in to it. about the 35V transformer can I use some Zener diode for limit op amps IC to solve the problem and how can I do it best regards thanks again for your kind attention and corporation

Hi friends: Thank so mach for your powerful site I build this power supply http://www.electronics-lab.com/projects/power/001/index.html so I try to upgrade the amps of it so I change the 2N3055 to two BUX98 Transistor and parallel them as you know it need to put a small and big resistance in emitter of those transistor so I put 0.27 ohm 5W for each of them and change input bridge diodes to 35A bridge but when I take just 1 amps continuously the heat-sink getting hot. I know I am never good designer so I need strongly your help to fix my problem, can you arrange your project for my two BUX98 Transistor and I must told you I check this power supply circuit with 5A adjustable transformer that I put it to 24V as your circuit is needed but I have 35V 5A Transformer that can give us 5A continuously. Can you arrange your circuit with this Transformer too. sorry for every things Best Regards