10 octave Audio Generator Speeds
Tests: 07/07/94 EDN-Design
Ideas |
1KHz Sine Wave Generator:
Simple circuitry, Low distortion, battery
operated Variable, Low impedance output up to1V
RMS |
3 to 12 MHz Signal Generator: |
555 Tone Generator 8 Ohm Speaker: |
68HC11 Function Generator: |
Bus Request Signal Generates
Logic Waveforms:
06/20/96 EDN-Design Ideas |
Chaos Generator: |
Convert periodic waveforms to
square waves:
08/16/2001 EDN - Design Ideas / Converting
periodic waveforms to square waves is an
integral part of extracting a clock signal from
data, creating waveform generators, and making
timing-pulse generators. Any
square-wave-conversion circuit is more valuable
when the square wave's duty cycle is variable
and controllable. Figure 1 shows a circuit that
has these attributes and can drive several TTL-compatible
loads.. |
DCC Waveforms and Voltages For
DCC Systems: |
DDS and converter form signal
generator: 02/20/03
EDN-Design Ideas / Many applications require
low-frequency signal generators that can deliver
high-performance, high-resolution signals. This
Design Idea presents a circuit that generates
frequencies of 0 to 1 MHz. Sinusoidal,
triangular, and square-wave outputs are
available. You can achieve frequency resolution
of better than 0... |
DDS device produces sawtooth
waveform: 07/10/03
EDN-Design Ideas / Ramp or sawtooth waveforms
are useful for a broad range of applications,
including automatic-test equipment, benchtest
equipment, and actuator control. Discrete
components typically set the waveform frequency.
Unfortunately, drift in these component values
over time and temperature limits the accuracy of
the output frequency... |
DDS using AD9835: |
Digital Signal Processor (DSP)
for Radio Communications: |
FIFO Makes Cheap Waveform
Generator: 12/21/95
EDN-Design Ideas |
Frequency Generator, 555IC: Fair
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Function Generator:
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Function Generator #2:
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Generate CID / CIDCW Analog
Signals: 10/22/98 EDN-Design
Ideas |
Generator Features Programmable
Duty Cycle: 11/23/94
EDN-Design Ideas |
HF Signal Generator:
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Improved PL Tone Decoder:
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linkwitz Cosine Burst Generator:
part of speaker measurement set described in the
construction article |
Low Cost Function Generator:
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Low Distortion, Amplitude Stable
Sine Wave Oscillator: |
Low Frequency Sine Wave Generator:
The two circuits below illustrate generating low
frequency sine waves by shifting the phase of
the signal through an RC network so that
oscillation occurs where the total phase shift
is360 degrees. |
Make a simple ramp generator for
stepper motors:
04/04/2002 EDN - Design Ideas / Stepper motors
are synchronous motors that step at the pulse
rate of the driving signal. For the motor to
move quickly, the stepping rate must be fast.
However, because of motor and load inertia, the
motor often cannot go from 0 rpm to the desired
number of revolutions per minute in one step.
Therefore, most stepper motors receive their
drive from a pulse chain that starts out slowly
and ... . |
Microphone Circuit Test
Oscillator: 440 Hz
Tone generator for testing XLR microph1-lines
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MonoStable Flip Flops (One Shot): |
Musical Tone Generator:
Fair Warning: this site has pop-up ads |
Occasional Pulse Circuit:
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PIC Controlled DDS VFO, 0 to 6
MHz: |
Precision Waveform Converter uses
Sawtooth Wave:
03/01/96 EDN-Design Ideas |
Programmable Ramp Generator has
14 Bit Linearity:
09/12/96 EDN-Design Ideas |
Pulse Stretcher Increases ECL
Gate Gains: 01/20/94
EDN-Design Ideas / stretches the output pulses
of an ECL comparator by operating the ECL line
receivers with unusually large pulldown
resistors to the -15V supply. The large load
resistance maximizes the gains of the
emitter-follower output stages and speeds up the
rising edges. At the same Time, the low pulldown
current, together with the input and wiring
capacitances, slows the falling edges. These
actions stretch the positive pulses by
approximately2 nsec/stage. |
:
10/03/2002 EDN - Design Ideas / A
current-feedback amplifier is a well-known
component with many uses. Its basic block
diagram shows that its input stage is a voltage
follower—in practice, a symmetrical emitter
follower (Figure 1). The configuration samples
the output current, converts it to voltage
across a large impedance, and amplifies it to
the output using a high-power,
low-output-impedance amplifier.. |
:
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Sawtooth Generator Spans a 70 DB
Range: 07/07/94 EDN-Design
Ideas |
Scheme yields Frequency Locked
Triangle Waves:
02/02/98 EDN-Design Ideas |
Self Oscillating Amplifier for
Distortion Testing:
allows the home constructor to make quite
accurate measurements, without having to spend a
lot of money on a low distortion oscillator
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Signal Frequency Beat Frequency
Oscillator:
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Signal Generator for Signal
Tracer: |
Signal Processor Adds LED Display:
06/05/96 EDN-Design Ideas |
Simple Technique Generates
Precise HART Waveforms
: 07/22/02 Electronic Design -
Ideas for Design / Designed to complement
conventional 4- to 20-mA analog signaling, the
Highway Addressable Remote Transducer (HART)
protocol supports two-way digital communications
for process measurement and control devices. The
protocol uses frequency-shift keying... |
Sine Wave Generator With Crystal
Accuracy: |
Smooth Tone Clickless CW SideTone
Generator: This
circuit is about as good as it gets for
generating Morse code tones. It may be used as a
code practice oscillator, a Tone generator for a
keyer, or a SideTone oscillator for a
transmitter. |
Square wave modulator has
variable frequency and pulse width:
08/08/2002 EDN - Design Ideas / A few
years ago, I worked at a disk-drive company. We
had a plating facility that required square
waves to drive the high-voltage plating
operation. The challenge was that the square
wave's pulse width had to be variable, along
with the duty cycle. Also, the amplitude of the
pulses had to be adjustable.. |
Square Wave Oscillator: |
Square Wave to Sine Circuit: |
Summer Linearizes Ramp & Triangle
Generators: 12/08/94
EDN-Design Ideas |
SwOpAmp Makes Square Wave
Generator: 02/15/96
EDN-Design Ideas |
Test Pattern Generator:
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Testcard Generator:
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Timers Generate Variable Sweep
Frequencies: 08/01/96
EDN-Design Ideas |
Tiny Programmable Oscillator
Operates From 5 kHz To 20 MHz:
08/06/01 Electronic Design - Ideas for Design /
By merging a digital potentiometer with an
oscillator chip, a very small programmable
oscillator (1 �MAX and one SOT-23 package) can
be realized. In addition to consuming very
little board space, the circuit requires only
three signals from a. . . |
Transconductance amp gives
oscillator reciprocal response:
04/17/03 EDN-Design Ideas / The circuit in
Figure 1 is a variation on the familiar
integrator/comparator triangle-wave oscillator,
which you typically implement with two op amps.
An integrator and a comparator connect in a
positive-feedback loop; the comparator drives
the integrator and vice versa. A fixed amount of
hysteresis exists in the comparator, producing a
triangle wave at the integrator's output... |
Tri Waveform Generator: |
Triangle & Square Wave Generator: |
Triangle / Square wave Generator:
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Triangle Waveform Generator: |
Triangle/square-wave oscillator
serves dual purpose:
11/22/99 Electronic Design - Ideas for Design /
In conventional triangular-wave oscillators,
hysteresis from positive feedback in the Schmitt
trigger determines the voltage levels and
amplitude of the triangular waves. With this
topology, it’s. . . |
Video Generators:
many test picture generation circuits
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WiFi Can Antenna:
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