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Armstrong Oscillator Circuit Diagram and Wiring Schematic
The Armstrong Oscillator is used to produce a sine-wave output of constant amplitude and of fairly constant frequency within the RF range. It is named after the electrical engineer Edwin Armstrong, its inventor. It is generally used as a local oscillator in receivers, as a source in signal generators, and as a radio-frequency oscillator in the medium- and high-frequency range.
The Armstrong Oscillator is identified by the feedback link positioned as a secondary winding on the tuning coil. The feedback mechanism is a coil that couples signal from the output of the amplifier back to the LC resonant circuit with the proper phase for positive feedback. The identifying characteristics of the Armstrong oscillator are that (1) it uses an LC tuned circuit to establish the frequency of oscillation, (2) feedback is accomplished by mutual inductive coupling between the tickler coil and the LC tuned circuit, and (3) it uses a class C amplifier with self-bias. Its frequency is fairly stable, and the output amplitude is relatively constant.
2009 Chevrolet Corvette Instrument Panel Fuse Block and Relay Table
The wiring circuits and electrical system in the 2009 Chevrolet Corvette are protected from short circuits by a combination of J-Case fuses, mini-fuses and circuit breakers. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure you replace a bad fuse with a new one of the identical size and rating.
The 2009 Chevy Corvette instrument panel fuse block is located on the passenger side of the vehicle, under the instrument panel and under the toe-board. Remove the carpet and toe-board covering to access the fuse block by pulling at the top of each corner of the panel. Open the fuse block cover to access the fuses. Below schematic diagram shows detail fuse location of 2009 Corvette Instrument Panel Fuse Block and its circuit protected function.
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