Thomas Schmit wrote:
The voltage gain of an ideal Tesla coil is the square root of the ratio of secondary inductance to primary inductance. The inductance of a coil is proportional to the square of the number of turns. So, the voltage gain is proportional to the turns ratio of the transformer formed by the primary and secondary inductors. The input voltage is usually around 10 kV, and the desired output voltage around 500 kV. The turns ratio, if both coils had the same geometry, would then be around 50. A 20 turns primary coil and a 1000 turns secondary coil are reasonable values. Since the geometry of the coils are different, there is a constant multiplying the turns ratio in the voltage gain, that may explain variations in this rule, requiring more or less turns in the primary coil for similar voltage gains.Hi Everyone, I was just wondering how the 1000 turn rule of thumb was developed. Is this a purely "practical" consideration - i.e. larger number of turns results in corona discharge and insulation failure at the top of the secondary or is there a theoretical reason behind it? Or something else entirely?
Antonio Carlos M. de Queiroz _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla