![DS1080CL Spread-Spectrum Crystal Multiplier General Description Features](http://s1.studyres.com/store/data/008859272_1-675d1f3f75d42ab29015ba55d10167ba-300x300.png)
Take your peg, gently ease it open. Stick a drawing pin into each
... You will be using a transistor to control this circuit. A transistor allows a small current to trigger a larger one. BANG!! When there is no current through the base (B) the buzzer is off, like an open switch. When there is a small current to the base the collector (C) / emitter (E) part of the circ ...
... You will be using a transistor to control this circuit. A transistor allows a small current to trigger a larger one. BANG!! When there is no current through the base (B) the buzzer is off, like an open switch. When there is a small current to the base the collector (C) / emitter (E) part of the circ ...
Experiment 27: AC Circuits: LR, LCR
... Measure and record the voltage VLR across both of them together to 0.05 volt accuracy. Return the output voltage knob to its minimum position. d) Change the frequency to f 2 = 4,000 hertz and record. Re-adjust VOUT to be between 9.80 and 9.95 volts and record the exact value. Repeat (c) above. e) Re ...
... Measure and record the voltage VLR across both of them together to 0.05 volt accuracy. Return the output voltage knob to its minimum position. d) Change the frequency to f 2 = 4,000 hertz and record. Re-adjust VOUT to be between 9.80 and 9.95 volts and record the exact value. Repeat (c) above. e) Re ...
Wireless Power Charging Coil Changing Considerations
... The DHC function of the LTC1967A would move the frequency of resonance to a preset detuned frequency of 140 kHz when the coils have a better coupling factor which means the voltage at VIN is more than 14 V and would be tuned to 127 kHz when coils have low coupling factor that is VIN is below 14 V Th ...
... The DHC function of the LTC1967A would move the frequency of resonance to a preset detuned frequency of 140 kHz when the coils have a better coupling factor which means the voltage at VIN is more than 14 V and would be tuned to 127 kHz when coils have low coupling factor that is VIN is below 14 V Th ...
RF Transmission Lines and Antennas
... are familiar with that goes from our rig to our antenna. These have one conductor in the middle surrounded by an insulator which is surrounded by an outer braid which is surrounded by outside insulation. Coax cables are considered to be unbalanced as the outer conductor is intended to be held at gro ...
... are familiar with that goes from our rig to our antenna. These have one conductor in the middle surrounded by an insulator which is surrounded by an outer braid which is surrounded by outside insulation. Coax cables are considered to be unbalanced as the outer conductor is intended to be held at gro ...
File - the Analysis of Electrical Engineering ELEC 291
... 9. The circuit shown in Figure 10 has a voltage and a current source. Combine current and voltage source to make one equivalent voltage source. Treat the 6.4Ω resistor as the load resistor. Draw the resulting circuit indicating the voltage source value and the resulting internal impedance attached t ...
... 9. The circuit shown in Figure 10 has a voltage and a current source. Combine current and voltage source to make one equivalent voltage source. Treat the 6.4Ω resistor as the load resistor. Draw the resulting circuit indicating the voltage source value and the resulting internal impedance attached t ...
Lecture Notes - Transfer Function and Frequency Response File
... Apply what is learnt to radio receiver and touch-tone telephone. ...
... Apply what is learnt to radio receiver and touch-tone telephone. ...
Series and Parallel Circuits
... Name the three types of energy that electrical energy can be converted into. 10) Its Christmas, and as you pass by a house lined with lights you notice that one of them has a bulb burned out but the rest are working fine. What can you tell about the string of lights? ...
... Name the three types of energy that electrical energy can be converted into. 10) Its Christmas, and as you pass by a house lined with lights you notice that one of them has a bulb burned out but the rest are working fine. What can you tell about the string of lights? ...
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.