Semiconductor rectifier diodes are PN junctions with P type semiconductor for anode and N type semiconductor for cathode. They are used to convert alternating current to direct current
When I started off in amateur radio in 1985, Solar Cycle 21 was nearing its end with sunspot activity going down. Solar Cycle 22 started in September 1986.
Fractal antenna design was initially presented by W1YW at the ARRL convention in October 1994. Fractal antenna uses a self similar design to maximize the effective length of
Wireless router range extender can be used at home when there is no good connectivity from the home internet wireless router to all the rooms. This router has
Light emitting diodes or LEDs produce light when electrons combine with holes in the semiconductor, releasing energy as photon. First ones to be produced were infrared and red
Many of you would have noticed that some of the modern cars have a ‘shark fin’ antenna, quite different from the whip antenna seen on older cars for radio
Capacitors were also called as condensers earlier. Even now, capacitor mics are known as condenser mics! The ones which I am showing are electrolytic capacitors with a polarity.
First Contact on the ‘Rare Bird’ UVSQ-SAT, with VU2TEK! The satellite was at 600 km distance and elevation was 30 degrees, when I heard VU2TEK during the pass
