Supplemental Material 1
... electrochemically formed as a thin layer of oxide. The thin layer of oxide and high surface area of the porous sintered material gives this type a very high capacitance per unit volume. The anode electrode is formed of a chemically deposited semi-conductive layer of manganese dioxide, which is then ...
... electrochemically formed as a thin layer of oxide. The thin layer of oxide and high surface area of the porous sintered material gives this type a very high capacitance per unit volume. The anode electrode is formed of a chemically deposited semi-conductive layer of manganese dioxide, which is then ...
ELECTRIC CURRENT One mark questions: 2. Mention a non-ohmic device.
... 3. Two resistances coils of 100ohm and 200ohm respectively are connected in series across 100volts. A moving coil voltmeter of resistance 200ohm is connected in turn across each coil. What will it read in each case? 4. A uniform wire of resistance 12 Ω is cut into three pieces in the ratio 1:2:3 and ...
... 3. Two resistances coils of 100ohm and 200ohm respectively are connected in series across 100volts. A moving coil voltmeter of resistance 200ohm is connected in turn across each coil. What will it read in each case? 4. A uniform wire of resistance 12 Ω is cut into three pieces in the ratio 1:2:3 and ...
Section 5 High Speed PCB Layout Techniques
... made even worse by the break in the ground plane. The obvious issue with this is the ground plane is often used as a reference point for other parts of the system. If the current flow density is high near one of these reference points, this can (and often does) cause noise to occur in the circuit an ...
... made even worse by the break in the ground plane. The obvious issue with this is the ground plane is often used as a reference point for other parts of the system. If the current flow density is high near one of these reference points, this can (and often does) cause noise to occur in the circuit an ...
UNIT - III - E
... electronic devices and their utilisation. An electronic device is that in which current flows through a vacuum or gas or semiconductor. Such devices have valuable properties which enable them to function and behave as the friend of man today. Importance. Electronics has gained much importance due to ...
... electronic devices and their utilisation. An electronic device is that in which current flows through a vacuum or gas or semiconductor. Such devices have valuable properties which enable them to function and behave as the friend of man today. Importance. Electronics has gained much importance due to ...
Project 1: Basic Testing Circuit
... Multimeters are robust in normal usage but care needs to be taken when using them to measure electric current. The Vsocket has a maximum current of about 200 milliamps. This is only 0.2 amps so it is easy to blow the fuse if the A… scale is mistakenly used when measuring volts or ohms. Measuring ...
... Multimeters are robust in normal usage but care needs to be taken when using them to measure electric current. The Vsocket has a maximum current of about 200 milliamps. This is only 0.2 amps so it is easy to blow the fuse if the A… scale is mistakenly used when measuring volts or ohms. Measuring ...
Simulation and Experimental Demonstration ofLow-/High
... unwanted ones. Filters are the electronic circuits which are employed to carry out this action. They are widely used for signal processing to enhance and reinforce the required component out of the unwanted ones. This paper focuses on the implementation of some common filters such as the low pass an ...
... unwanted ones. Filters are the electronic circuits which are employed to carry out this action. They are widely used for signal processing to enhance and reinforce the required component out of the unwanted ones. This paper focuses on the implementation of some common filters such as the low pass an ...
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.