![The Tenna-Tune](http://s1.studyres.com/store/data/007900245_1-ee65090eadaec1e056c161ad2cbf4eb2-300x300.png)
The Tenna-Tune
... easier, I just preferred the look of the slide switch. I assume you won’t have a problem with the SO-239 holes, because every ham has a Greenlee 5/8” punch for these, right? I built everything into the tiny aluminum box called out in the parts list. This is a painted box, so you should scrape off pa ...
... easier, I just preferred the look of the slide switch. I assume you won’t have a problem with the SO-239 holes, because every ham has a Greenlee 5/8” punch for these, right? I built everything into the tiny aluminum box called out in the parts list. This is a painted box, so you should scrape off pa ...
eecs.tufts.edu - Tufts University
... containing a paramagnetic sample. Phrased alternatively, the susceptometer finds the frequency at which a coil structure filled with a paramagnetic sample exhibits the highest inductance. This frequency is unique to any substance; thus presenting a inexpensive, fast and effective way to identify sub ...
... containing a paramagnetic sample. Phrased alternatively, the susceptometer finds the frequency at which a coil structure filled with a paramagnetic sample exhibits the highest inductance. This frequency is unique to any substance; thus presenting a inexpensive, fast and effective way to identify sub ...
Crystal Mini Primer - Part 1
... All crystals have many resonant responses (See Figure 5). The first major response is called the “Fundamental”. To the right of it, is the next major response which is the 3rd Overtone, then the 5th Overtone, and so on. There are only odd overtones. The overtone responses are not harmonics of the fu ...
... All crystals have many resonant responses (See Figure 5). The first major response is called the “Fundamental”. To the right of it, is the next major response which is the 3rd Overtone, then the 5th Overtone, and so on. There are only odd overtones. The overtone responses are not harmonics of the fu ...
lab9 - Suffolk University
... Purpose and Equipment: In this experiment, you will analyze circuits that utilize Transformers in their design. You will use phasors to determine the amplitude and phase of your circuit parameters, and will measure some of the circuit parameters of a physical transformer to determine how they affect ...
... Purpose and Equipment: In this experiment, you will analyze circuits that utilize Transformers in their design. You will use phasors to determine the amplitude and phase of your circuit parameters, and will measure some of the circuit parameters of a physical transformer to determine how they affect ...
Exercise 9 Revision on A.C(III)
... (6). The input terminals of a C.R.O., on both the d.c. and a.c. settings, are thought to have (1) a resistor R of resistance 1 - 10 M, and (2) a capacitor C of capacitance 10 - 100 pF connected internally in parallel. From the following experiments it is intended to confirm the presence of these co ...
... (6). The input terminals of a C.R.O., on both the d.c. and a.c. settings, are thought to have (1) a resistor R of resistance 1 - 10 M, and (2) a capacitor C of capacitance 10 - 100 pF connected internally in parallel. From the following experiments it is intended to confirm the presence of these co ...
Class XII Physics 50 short questions
... 33. How the size of depletion region changes when p-n junction diode is in (a) forward bias (b) reverse bias and the conductivity of diode changes with bias. 34. What is zener diode? Draw V-I characteristic curve of zener diode. Explain its use as a voltage regulator. 35. Discuss the variation of re ...
... 33. How the size of depletion region changes when p-n junction diode is in (a) forward bias (b) reverse bias and the conductivity of diode changes with bias. 34. What is zener diode? Draw V-I characteristic curve of zener diode. Explain its use as a voltage regulator. 35. Discuss the variation of re ...
Spring10E1
... 2. If the refection coefficient is 0.5 what is the VSWR? VSWR = 1 + |r| = 1.5/0.5 = 3:1 1 – |r| 3. If 500W is transmitted from the source of a transmission line and the reflection coefficient is 0.5 how much power is absorbed in the load? ...
... 2. If the refection coefficient is 0.5 what is the VSWR? VSWR = 1 + |r| = 1.5/0.5 = 3:1 1 – |r| 3. If 500W is transmitted from the source of a transmission line and the reflection coefficient is 0.5 how much power is absorbed in the load? ...
AN-830 Quartz Crystal Drive Level
... DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject ...
... DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT’s sole discretion. All information in this document, including descriptions of product features and performance, is subject ...
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.