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0.3V Crystal Oscillator Circuit with Buffered Output - Circuit
Ideas for Designers Application Notes Advanced Linear Devices, Inc....[App
Note] |
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0.5V Crystal Oscillator Circuit with Output Buffer - Circuit Ideas
for Designers Application Notes Advanced Linear Devices, Inc....[App Note]
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10 octave Audio Generator Speeds Tests - 07/07/94 EDN-Design
Ideas....Testing frequency response of an audio device typically
requires a sine-wave oscillator, an ac voltmeter or an oscilloscope,s.…
[Design Idea by Wayne Sward, Consultant, Bountiful, UT] |
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10.58 to 10.74 MHz VFO Oscillator - Electronic Circuit design
(added 02/05) |
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12V Touch Switch Exciter Circuit - This circuit is designed to
generate a 20KHz pseudo sine wave signal that can power about 50 remote
touch activated switch circuits. It can support a cable length of
about 2500 feet. A typical remote switch circuit is also shown as well
as a receiver circuit for those switches.... [Designed by David A. Johnson] |
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1kHz Sinewave Generator - Simple circuitry, low distortion,
battery operated. Variable, low impedance output up to 1V RMS.
(electronic circuit added 06/07/08) |
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2 DDS ICs implement amplitude shift keying - 25-Dec-03 Issue of EDN
Many communications systems, including RFID systems and cable modems, use AM
(amplitude modulation]. This Design Idea shows how two DDS
(direct-digital-synthesis] devices can implement AM and ASK (amplitude-shift keying]
over a range of frequencies. The AD9834 complete 50-MHz DDS IC (Figure 1] has a
current output, so you can easily sum the outputs of two orof them by connecting them
to a.... [Design Idea by Noel McNamara, Analog Devices, Limerick, Ireland] |
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2 Stage Chaotic Colpitts Oscillator for the UHF range - Chaos in the
Colpitts oscillator was first reported at the kilohertz frequencies [1]. Later the
circuit was investigated in the high frequency (HF: 3 to 30 MHz) range [2,3]. Chaotic
oscillations were demonstrated…. |
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2 Tone Audio Oscillator use for SSB Tests - amateur radio construction
projects…. [from Peter Parker's website] |
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2 Tone Train Horn - With this circuit you can electronically simulate the
noise of a diesel-train horn. The sound is triggered automatically as the train
reaches a desired place on the track so you can produce the sound as the train
approaches stations, level crossings, etc. The circuit can be built simply by using
one 556 or two 555 timers.... [Tony van Roon's circuit] |
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200MHz-400MHz Voltage Controlled Oscillator (VCO) - If you need a clean
emitter coupled logic (ECL) type signal between 200MHz and 400MHz this circuit works
fine. It uses four voltage-controlled capacitors to change the frequency.... [Designed
by David A. Johnson] |
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20MHz Function Generator 2 - MAX038 0.1Hz, 20MHz ….(electronic schematic
added 11/08) |
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20MHz Function Generator 3 - Uses MAX038 IC to provide 0.1Hz, 15MHz
sinusoidal, square and triangle frequency. ….(electronic schematic added 11/08)
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20MHz High Speed Function Generator - The High Speed Function Generator was
published in professional electronics section of Aug 1996 issue of
Electronics Australia, and has proven to be extremely popular. kit is no longer
available from any of kit suppliers… (added 11/05) |
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3 - 12 MHz Signal Generator - amateur radio construction projects…. [from
Peter Parker's website] |
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3 Second Time Base from Crystal Oscillator - The schematic above illustrates
dividing a crystal oscillator signal by the crystal frequency to obtain an accurate
(0.01%) 1 second time base. Two cascaded 12 stage counters (CD4040) form a 24 stage
binary counter and the appropriate bits are gated together to produce the desired
division. Using a crystal of some even multiple of 2 is desirable so that one stage of
the counter automatically toggles every second which eliminates the need for the NAND
gate and reset circuitry, however the circuit below illustrates using a crystal which
is not an even multiple of 2 and so requires additional....(electronic circuit added
7/03) |
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3 to 12 MHz Signal Generator - amateur radio construction projects…. [from
Peter Parker's website] |
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300v Peak to Peak Signal Generator - This circuit converts a square wave
signal to a +-150 volt output signal with fast 100nS rise and fall times.... [Designed
by David A. Johnson] |
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32.768 kHz Oscillator using a Common Watch Crystal - Below are a couple
circuits you can use to produce a 32.768 KHz square wave from a common watch crystal.
The output can be fed to a 15 stage binary counter to obtain a 1 second square wave.
The circuit on the left using the 4069 inverter is recommended over the transistor
circuit and produces a better waveform. The single transistor circuit.... [Bill
Bowden's website] |
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3-phase sinusoidal waveform generator uses PLD - 10/12/06 EDN-Design
Ideas....Five ICs substitute for electromechanical three-phase source.... [Design Idea
by Eduardo Perez-Lobato, University of Antofagasta, Antofagasta, Chile] |
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4 Transistor Tracking Transmitter - Schematic and parts list only, no
circuit description included…. [Tony van Roon's circuit] |
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4 Transistor Transmitter - This circuit provides an FM modulated signal with
an output power of around 500mW. The input Mic preamp is built around a couple of
2N3904 transistors, audio gain limited by the 5k preset. The oscillator is a colpitts
stage, frequency of oscillation governed by the tank circuit made from two 5pF
capacitors and the inductor.... [Design by Paul K Sherby] |
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40kHz generator - A circuit that I have used before is based on CD4060
(14stage binary counter) and a 640Khz ceramic resonator. CD4060 is basically
an…. ASCII format |
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40kHz LED Test Signal Generator - This 40KHz crystal controlled oscillator
circuit drives an infrared LED with powerful 40ma pulses. The circuit can be
used to test optical communications circuits, designed to receive 40KHz modulated
light signals.... [Designed by David A. Johnson] |
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5 Hints for Debugging MicroController-based Designs AN 1458 - Agilent
Application Note (added 6/06) |
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555 Tone Generator 8 Ohm Speaker - This is a basic 555 squarewave oscillator
used to produce a 1 Khz tone from an 8 ohm speaker. In the circuit on the left, the
speaker is isolated from the oscillator by the NPN medium power transistor which also
provides more current than can be obtained directly from the 555 (limit = 200 mA). A
small capacitor is used at the transistor.... [Circuit designed by Bill Bowden] |
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68HC11 Function Generator - (electronic schematic / circuit added 4/02)
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8 Hints for Better RF Signal Generator Measurements - Aligent App Note
(app note added 04/05/06) |
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8 Hints for Making Better Measurements Using Analog RF Signal Generators -
Agilent Application Note....[App Note] |
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8644A-2 Air Navigation Receiver Testing With The Agilent 8644A - Agilent
Application Note (added 04/08) |
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