AC Series
... Peak values are useful for time domain representations of signals. RMS values are the standard when dealing with phasor domain representations If you need to represent something in the time domain, you will need to convert RMS->Peak voltage to obtain Em ...
... Peak values are useful for time domain representations of signals. RMS values are the standard when dealing with phasor domain representations If you need to represent something in the time domain, you will need to convert RMS->Peak voltage to obtain Em ...
P3.6.4.2 - LD Didactic
... inductive reactance can be determined. This measuring bridge, too, consists of four passive bridge arms, which are connected to one another in a square, an indicator arm with a balance indicator and a supply arm with the voltage source. The current in the indicator arm is made zero by adjusting vari ...
... inductive reactance can be determined. This measuring bridge, too, consists of four passive bridge arms, which are connected to one another in a square, an indicator arm with a balance indicator and a supply arm with the voltage source. The current in the indicator arm is made zero by adjusting vari ...
9.2 Oersted`s experiment
... 1 Assemble a simple series circuit with a power source, a switch, and the 50cm long wire hanging vertically between the two clamps. Use the crocodile clips to make electrical connections from the power source to the copper wire. 2 Close the switch and observe the changes in the plotting compass as y ...
... 1 Assemble a simple series circuit with a power source, a switch, and the 50cm long wire hanging vertically between the two clamps. Use the crocodile clips to make electrical connections from the power source to the copper wire. 2 Close the switch and observe the changes in the plotting compass as y ...
Pierce-Gate Crystal Oscillator, an introduction
... conditions. If U1 is not part an ASIC, then the designer must carefully select an inverter with the proper gain/phase characteristics for the targeted frequency or range of frequencies. Simulation is also strongly recommended here but not necessary for a good working design. Not all digital inverter ...
... conditions. If U1 is not part an ASIC, then the designer must carefully select an inverter with the proper gain/phase characteristics for the targeted frequency or range of frequencies. Simulation is also strongly recommended here but not necessary for a good working design. Not all digital inverter ...
Lab 7 - Electronic Filters (C and G Sections Only)
... 3dB drop of signal power from highest point on gain Signal power is half of original value Cutoff Frequency (in Hz) Frequency at -3dB Point ...
... 3dB drop of signal power from highest point on gain Signal power is half of original value Cutoff Frequency (in Hz) Frequency at -3dB Point ...
Inductors & Resonance
... Thus it is necessary to provide a large surface to minimize radio frequency resistance which is known as skin effect. Inductors used can range from a 25 mm diameter tube for a slot antenna on VHF to 50 turns of 22 swg wire on a 7.5 cm diameter former for the tank circuit of a 1.8 MHz transmitter. Th ...
... Thus it is necessary to provide a large surface to minimize radio frequency resistance which is known as skin effect. Inductors used can range from a 25 mm diameter tube for a slot antenna on VHF to 50 turns of 22 swg wire on a 7.5 cm diameter former for the tank circuit of a 1.8 MHz transmitter. Th ...
CircuitI_exp111411499998
... Zeq = 0) at a certain frequency. Derive an expression for this frequency in terms of C and L. 3- The equivalent impedance of a capacitor in parallel with an inductor is equivalent to an open circuit (Le. Zeq =) at a certain frequency. Derive an expression for this frequency. 4- Calculate the averag ...
... Zeq = 0) at a certain frequency. Derive an expression for this frequency in terms of C and L. 3- The equivalent impedance of a capacitor in parallel with an inductor is equivalent to an open circuit (Le. Zeq =) at a certain frequency. Derive an expression for this frequency. 4- Calculate the averag ...
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.