Why are Electronic Devices painted Black ?
Electronic Devices such as ICs, transistors are painted black as a black surface dissipates heat more effectively.
In Thermodynamics, it is called black body radiation.
List of Articles
Voltage Classification - LV, MV and EHV
AC voltages have been classified in various manners. In earlier times, there were just two categories LV and HV. As the level of voltages...
Static and Dynamic Resistance
Static Resistance is the normal ohmic resistance in accordance with Ohm's Law. It is the ratio of voltage and current and is a constant...
Freewheeling or Fly back diodes and their function
Freewheel or Fly back diodes are used across inductive components such as coils to prevent voltage spikes when the power is turned off to th...
Calculating the percentage impedance of a Transformer
The impedance of a transformer is defined as the percentage of the drop in voltage to the at full load to the rated voltage of the transform...
Petersen Coils - Principle and Application
Peterson coils are used to in ungrounded 3-phase grounding systems to limit the arcing currents during ground faults. The coil was first de...