Links are working fine for me...

and didn't get good result with your solutions. it seems i've to power it externally

It seems you didn't read the post clearly. Separate power supply is mentioned in that.

running it on a separate power circuit to any of your audio equipment....

Ohhh.. Someone from ROBOT.LK faced this as well

I have added an article about Electromagnetic Interference cause by Computers since this needs to be addressed in a common background.

Try those points and don't forget to submit your feedback.

Radio waves are Electro-Magnetic Radiation (EMR), just like light, which inhabit a frequency range of said EMR, usually between 5300KHz to 16000KHz (1.6MHz) for Amplitude Modulated (AM), and 88MHz to 108MHz for Frequency Modulated (FM) Australian commercial radio. It is a known fact of science that ...

I thought the guys of ROBOT.LK are not much interested with my articles ;) Ok, a real time clock is basically just like a watch - it runs on a battery and keeps time for you even when there is a power outage! Using an RTC, you can keep track of long timelines, even if you reprogram your uC (microcon...

Some more information.... HOW THE CIRCUIT WORKS The circuit is a single transistor oscillator called a feedback oscillator, or more accurately a BLOCKING OSCILLATOR. It has 45 turns on the primary and 15 turns on the feedback winding. There is no secondary as the primary produces a high voltage duri...

What kind of batteries we can use with this charger All common rechargeable battery types will support. For example: lead-acid, nickel cadmium (NiCd), nickel metal hydride (NiMH), lithium ion (Li-ion), and lithium ion polymer (Li-ion polymer) What is the use of this circuit? why we can't charge bat...

Another easy one to make.

This is a simple NiCd battery charger powered by solar cells. A solar cell panel or an array of solar cells can charge a battery at more than 80 % efficiency provided the available voltage exceeds the ‘fully charged’ battery voltage by the drop across one diode, which is simply inserted between the ...

I was looking for a circuit diagram of a solar charger and found this nice one. Solar charger.gif PARTS LIST 1 - 220R 1/2 resistor 1 - 470R 1 - 1k 1 - ZTX 851 transistor or BC 338 1 - BY 207 or equiv high-speed diode 1 - 10u 16v electrolytic 1 - 100u 25v electrolytic 2m - 0.25mm enamelled wire 1 - 1...