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A Simple Two Tone Oscillator - Internode
http://www.users.on.net/~endsodds/twotones.htm
The circuit diagram of the two tone generator (JPEG) The component overlay of the two tone generator (JPEG) The printed circuit track pattern (PDF) A Very High Quality Two Tone Oscillator : DOWNLOADS: This project was published in the …
A Two-tone Oscillator
https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/pw/1989/05/page24/index.html
The Wien Bridge Oscillator. Fig 2.1. One of the simplest audio oscillators to construct is the Wien bridge oscillator. It consists of a series CR circuit in one branch of the bridge and a parallel CR circuit in another branch. In the …
Analyze This! ... Two-Tone Test Oscillator
https://www.cwtd.org/Sep17.html
Circuit description . Two wein-bridge audio oscillators. Identical except for frequency determining components. Uses two two-section LMC6482AIN op-amp chips. One section U1B is the 700 Hz oscillator. …
ELECRAFT 2T-gen 2-Tone TEST OSCILLATOR - RadioManual
http://www.radiomanual.info/schemi/ACC_instrument/Elecraft_2T-gen_user.pdf
ELECRAFT 2T-gen 2-Tone TEST OSCILLATOR Rev A, June 23, 2005 Introduction The Elecraft 2T-gen is a 2-Tone test oscillator that can be used to make distortion measurements on SSB transmitters and amplifiers. The 2T-gen is battery operated and provides sufficient output level to be connected directly to the microphone connector of almost any transceiver.
Simple Audio Amplifier/Oscilator Circuit with Two ...
https://circuitszone.com/simple-audio-amplifier-oscilator-circuit-with-two-transistors/
Simple Audio Amplifier/Oscilator Circuit with Two Transistors. April 17, 2018 by Angga Daren. This circuit has two main functions, namely as an audio amplifier and as an oscillator. J1 is a standard 3.5 mm jack connector. The transformers used in this circuit are Argonne AR-164, Thordarson TR-114, or Stancor TA-42.
FCC Commercial Element 3 pool, section 58 - HamStudy.org
https://hamstudy.org/browse/C3_2009/58
Correct Answer. C. A two-tone audio-frequency sine wave. D. An audio frequency square wave. 3 58H3. When you test for linearity, you are testing how two inputs are being added together and checking that the output is what you would expect it to be. If a system is linear, it shouldn't matter if two inputs are scaled or added together before you ...
SINGLE SIDE BAND TWO TONE TEST - VK6YSF
https://vk6ysf.com/ssb_2tone_test.htm
The standard two tone test applies two audio frequency tones to the transceiver microphone from a quality sinusoidal generator at approximately 700 and 1900Hz. The exact audio frequency is not critical other than they cannot be harmonically related and should be sufficiently separated with in the audio band pass.
Audio Oscillator | Discrete Semiconductor Circuits ...
https://www.allaboutcircuits.com/textbook/experiments/chpt-5/audio-oscillator/
The proper name for this circuit is “ astable multivibrator ”. It is a simple, free-running oscillator circuit timed by the sizes of the resistors, capacitors, and power supply voltage. Unfortunately, its output waveform is very distorted, neither sine wave nor square. For the simple purpose of making an audio tone, however, distortion ...
Square Wave Oscillator Circuits - Homemade Circuit …
https://www.homemade-circuits.com/cmos-rc-oscillator-circuits-square-wave-oscillators/
One oscillator can be used for audio frequency generation, while the second one for running at 1 or 2 hertz frequency. Integrating the two with each other would provide a, interesting pulsating audio output as given below. Figure 2.1c: NAND Gate two tone RC …
Two-tone signal generator - robkalmeijer.nl
https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/hr/1986/02/page25/index.html
Schematic of two-tone test generator. Theory, digital section. U1, a CD4060, contains an oscillator and a 14-stage binary divider. Y1 can be either a 3.579545 TV crystal (producing output frequencies of 582 and 1746 Hz) or a 3.6864 crystal (producing output …
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