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WORKING OF scr….
... Subject Code : 331101 Name Of Subject : Basic Electronics Name of Unit : OSCILLATORS & AMPLIFIERS. Topic :Hartely Oscillator & Colpitt oscillator By :Mr. Harekrushna Avaiya ...
... Subject Code : 331101 Name Of Subject : Basic Electronics Name of Unit : OSCILLATORS & AMPLIFIERS. Topic :Hartely Oscillator & Colpitt oscillator By :Mr. Harekrushna Avaiya ...
Topic 6 Powerpoint Slides
... • At this point the direction of charge flow from the armature has reversed but so has the connection through the commutator. • As a result, current continues to flow through the load in the same direction. ...
... • At this point the direction of charge flow from the armature has reversed but so has the connection through the commutator. • As a result, current continues to flow through the load in the same direction. ...
Circuit Analysis of Overdrive Tube Amplifier Circuits
... The next piece of the circuit was the most important part of the circuit: the clipping stage. The clipping stage is what is responsible for the characteristic sound of the overdrive circuit. The input is again filtered through a capacitor, draining away harsh low frequencies. The op-amp is used as a ...
... The next piece of the circuit was the most important part of the circuit: the clipping stage. The clipping stage is what is responsible for the characteristic sound of the overdrive circuit. The input is again filtered through a capacitor, draining away harsh low frequencies. The op-amp is used as a ...
currents through inductances, capacitances and resistances
... 2) Connect the RC circuit to the square wave generator, using the circuit of Fig. 5 appropriately modified, and observe V, VR, VC for any value of R between 100 and 100 k, and for C = 0.022 F. What are the observed time constants? How do these compare with the value of RC? 3) Do the same as befor ...
... 2) Connect the RC circuit to the square wave generator, using the circuit of Fig. 5 appropriately modified, and observe V, VR, VC for any value of R between 100 and 100 k, and for C = 0.022 F. What are the observed time constants? How do these compare with the value of RC? 3) Do the same as befor ...
Measurement of Weak Magnetic Fields
... There are two basic types of detector [1]: induction detector operating on the principle of Faraday’s induction law, and inductive detector, which detects the presence of ferromagnetic material by changing the detector coil inductance. In the course of motion over a magnetized material, alternating ...
... There are two basic types of detector [1]: induction detector operating on the principle of Faraday’s induction law, and inductive detector, which detects the presence of ferromagnetic material by changing the detector coil inductance. In the course of motion over a magnetized material, alternating ...
instruments and methods - International Glaciological Society
... temperate glaciers in Iceland. Two devices have been built. Mark I operates in the frequency band 2 to 5 MHz. The overall range is 100 to I 000 m. The arrival of the echo can be timed with an accuracy which corresponds to 20 m resolution. The equipment has been used for routine soundings on Myrdalsj ...
... temperate glaciers in Iceland. Two devices have been built. Mark I operates in the frequency band 2 to 5 MHz. The overall range is 100 to I 000 m. The arrival of the echo can be timed with an accuracy which corresponds to 20 m resolution. The equipment has been used for routine soundings on Myrdalsj ...
Practice Quiz 9
... 3) An air filled solenoid has an inductance L. The solenoid is then filled with iron core of permeability 2000 µ The inductance of the coil is now? A) still L B) 5.0 × 10-4 L C) 2000 L D) 4.0 × 106 L Answer: C 4) A simple RL circuit contains a 12.0- Ω resistor and 35-mH inductor, an 18-V battery and ...
... 3) An air filled solenoid has an inductance L. The solenoid is then filled with iron core of permeability 2000 µ The inductance of the coil is now? A) still L B) 5.0 × 10-4 L C) 2000 L D) 4.0 × 106 L Answer: C 4) A simple RL circuit contains a 12.0- Ω resistor and 35-mH inductor, an 18-V battery and ...
Chapter 21 Electromagnetic Induction and Faraday’s Law
... The voltages across each device are given by the x-component of each, and the current by its x-component. The current is the same throughout the circuit. ...
... The voltages across each device are given by the x-component of each, and the current by its x-component. The current is the same throughout the circuit. ...
Crystal radio
A crystal radio receiver, also called a crystal set or cat's whisker receiver, is a very simple radio receiver, popular in the early days of radio. It needs no other power source but that received solely from the power of radio waves received by a wire antenna. It gets its name from its most important component, known as a crystal detector, originally made from a piece of crystalline mineral such as galena. This component is now called a diode.Crystal radios are the simplest type of radio receiver and can be made with a few inexpensive parts, such as a wire for an antenna, a coil of copper wire for adjustment, a capacitor, a crystal detector, and earphones. They are distinct from ordinary radios as they are passive receivers, while other radios use a separate source of electric power such as a battery or the mains power to amplify the weak radio signal so as to make it louder. Thus, crystal sets produce rather weak sound and must be listened to with sensitive earphones, and can only receive stations within a limited range.The rectifying property of crystals was discovered in 1874 by Karl Ferdinand Braun, and crystal detectors were developed and applied to radio receivers in 1904 by Jagadish Chandra Bose, G. W. Pickard and others.Crystal radios were the first widely used type of radio receiver, and the main type used during the wireless telegraphy era. Sold and homemade by the millions, the inexpensive and reliable crystal radio was a major driving force in the introduction of radio to the public, contributing to the development of radio as an entertainment medium around 1920.After about 1920, crystal sets were superseded by the first amplifying receivers, which used vacuum tubes (Audions), and became obsolete for commercial use. They, however, continued to be built by hobbyists, youth groups, and the Boy Scouts as a way of learning about the technology of radio. Today they are still sold as educational devices, and there are groups of enthusiasts devoted to their construction who hold competitions comparing the performance of their home-built designs.Crystal radios receive amplitude modulated (AM) signals, and can be designed to receive almost any radio frequency band, but most receive the AM broadcast band. A few receive shortwave bands, but strong signals are required. The first crystal sets received wireless telegraphy signals broadcast by spark-gap transmitters at frequencies as low as 20 kHz.