![The RLC Circuit](http://s1.studyres.com/store/data/005788367_1-2f5263952a898d8390856156f8b5253c-300x300.png)
RC SNUBBERS (SMPS) - Illinois Capacitor
... RC SNUBBERS (SMPS) Snubbers are energy-absorbing circuits used to suppress the voltage spikes caused by the circuit's inductance when a switch, electrical or mechanical, opens. The most common snubber circuit is a capacitor and resistor connected in series across the switch (transistor). ...
... RC SNUBBERS (SMPS) Snubbers are energy-absorbing circuits used to suppress the voltage spikes caused by the circuit's inductance when a switch, electrical or mechanical, opens. The most common snubber circuit is a capacitor and resistor connected in series across the switch (transistor). ...
Chapter 1 0 - RC Circuits
... • Frequency-selective circuits permit signals of certain frequencies to pass from the input to the output, while blocking all others • A low-pass circuit is realized by taking the output across the capacitor, just as in a lag network • A high-pass circuit is implemented by taking the output across t ...
... • Frequency-selective circuits permit signals of certain frequencies to pass from the input to the output, while blocking all others • A low-pass circuit is realized by taking the output across the capacitor, just as in a lag network • A high-pass circuit is implemented by taking the output across t ...
Tech Short 16 - Detectors and Discriminators
... rather briefly outline the various forms of detector used in valve receivers, when and why they are used, discuss typical detector circuits used in Eddystone valve receivers of the post-WWII era, and provide some commentary on their performance and faults that may develop in them. Detector circuits ...
... rather briefly outline the various forms of detector used in valve receivers, when and why they are used, discuss typical detector circuits used in Eddystone valve receivers of the post-WWII era, and provide some commentary on their performance and faults that may develop in them. Detector circuits ...
Lecture13
... •We only had one resistor and so only had to consider one current. This can simplify problems! ...
... •We only had one resistor and so only had to consider one current. This can simplify problems! ...
VLF Designs specializing in Analog Telemetry Earthquake
... The receiver manufacturers schematics and troubleshooting for the VHF version of the receiver are provided as part of this manual. The UHF version is similar. Because this receiver can be used for many different applications, not all of the manufacturers information will be applicable to the telemet ...
... The receiver manufacturers schematics and troubleshooting for the VHF version of the receiver are provided as part of this manual. The UHF version is similar. Because this receiver can be used for many different applications, not all of the manufacturers information will be applicable to the telemet ...
powerpoint
... • Materials with low resistance are called conductors. • Materials with high resistance are called resistors or insulators (depending on how used) • Superconductors are materials that have zero resistance below a certain temperature. • Semiconductors are materials with electrical properties between ...
... • Materials with low resistance are called conductors. • Materials with high resistance are called resistors or insulators (depending on how used) • Superconductors are materials that have zero resistance below a certain temperature. • Semiconductors are materials with electrical properties between ...
Fast Photodetection in Functional Near Infra-Red Spectroscopy
... In order to operate the single photon avalanche photodiode (SAPD) in Geiger mode for single photon counting, a new controllable mixed quenched circuit (MQC) with ability to real-time control of hold-off time in photoreceptor front-end is proposed in this paper. It exhibits an ultra-fast quench time ...
... In order to operate the single photon avalanche photodiode (SAPD) in Geiger mode for single photon counting, a new controllable mixed quenched circuit (MQC) with ability to real-time control of hold-off time in photoreceptor front-end is proposed in this paper. It exhibits an ultra-fast quench time ...
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.