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Or pepakpan should think about DC-DC converters like mc34063.Prototyp_V1.0 said:A very simple way would be using a 7805 regulator. It just works and yoy don't have to think.
But if you plan to output any more than some fifty milliamps then you should consider mounting it on a heatsink.
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Agreed. Thats the sensible way. But it depends of how much current, and also the power supply (if it is a battery/solar cell or iv it's just a power outlet with a DC supply)haker_fox said:Or pepakpan should think about DC-DC converters like mc34063.Prototyp_V1.0 said:A very simple way would be using a 7805 regulator. It just works and yoy don't have to think.
But if you plan to output any more than some fifty milliamps then you should consider mounting it on a heatsink.
**broken link removed**
If it is a DIP package, you may use AVR programmer from www.ikalogic.com/isp.php/pepakpan said:I would like to thank all for their replies. I tested with 7805 and its working.
Added after 4 minutes:
My one more question is...
I would like to design a pcb with atmega8 controller. So to program this controller I need to have some interface between controller and computer. One more thing is i will program this pcb only once. So there any way of programming it without having USB or RS232 connectors on pcb.
This power supply may already be in the system. Therefore there is no way.mvs sarma said:As such no point in using 25V input.
any way , you managed you need . Finepepakpan said:the power supply 24V is not my wish... its a standard power supply used in a system where i have to use this pcb....so its the only option...