Written by Cal Orr
Even the most robust radio systems are worthless without a good, clean power supply
Technical
As seen in the August 2014 issue of Model Aviation.
A good, clean power supply is important. Our RC radios typically require a DC voltage of 4.8 to 6.0 volts. On an oscilloscope, this DC voltage would appear as a straight line, so in this case, a flat line is a good thing. An oscilloscope is a voltage meter that displays the voltage with respect to time.
In Photo 1, I have attached an old, but charged, 4.8-volt 500 mAh battery to the scope. Notice the grid on the…