Energy Band Gap of PN Junction Diode
To plot reverse saturation current Vs Temperature in reverse biased PN junction
Diode.Instrument consists of DC Regulated Power Supply 0-IV DC/500uA, two round
meters for voltage & current measurement, one PN Junction Diode is in Oven,
100 C thermometer provided with temperature control system.
Study of Transmitter & Receiver using Fiber Optics Cable To construct a Optical Transmitter and calculate its Output Power. Transmission of Signal through Fiber Optic Cable. To construct a Optical Receiver and calculate its output power. To study the Attenuation of Signal when transmitted from Transmitter to Receiver end,instrument comprises of DC Power Supply 6VDCand 3VDC. Preamplifier stages,consists of MIC (Microphone), Photo detector, Transistors (548) and biasing network Resistance and Capacitors. Power amplifier stages with impedance matching transformers (Driver Transformers, Transistors (8550) and biasing network of Resistances and Capacitors. Output section having LED's (Light Emitting Diodes) and speaker. Fiber optic cable for transmission of signal.
A Tesla coil is a radio frequency oscillator that drives a double-tuned resonant transformer to produce high voltages.Tesla's original circuits as well as most modern coils use a simple spark gap to excite oscillations in the tuned transformer. More sophisticated designs use transistor switches or vacuum tube electronic oscillators to drive the resonant transformer.
Tesla coils can produce output voltages from a hundred kilovolts to several million volts for large coils. The alternating current output is in the low radio frequency range, usually between 50 kHz and 1 MHz. Although some oscillator-driven coils generate a continuous alternating current, most Tesla coils have a pulsed output; the high voltage consists of a rapid string of pulses of radio frequency alternating current.
The common spark-excited Tesla coil circuit, shown below, consists of these components: