|
Make a simple ramp generator for stepper motors - 04/04/02 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.....(design idea added 1/05) |
|
Medium Power 125kHz Oscillator - This circuit is similar to CMOS INVERTERS FORM
125KHZ OSCILLATOR but adds more inverters in parallel to deliver yet more power.
The values shown are for 125KHz. ….(designed by David A. Johnson) |
|
Medium Power 125kHz Oscillator-2 - This circuit is similar to MEDIUM POWER 125KHZ
OSCILLATOR but adds even more inverters in parallel to deliver yet more power.
The values shown are for 125KHz. ….(designed by David A. Johnson) |
|
Mic Circuit Tester - Small oscillator to check mic & line circuits during sound
setup. 440 Hz Tone generator for testing XLR microph1-lines (added 5/02) |
|
Micro-power Band-pass Network - Circuit Ideas for Designers Application Notes
Advanced Linear Devices, Inc. (app note added 6/06) |
|
Microprocessor generates programmable clock sequences - 07/20/06 EDN-Design Ideas:
Produce custom-programmed pulse-width modulated waveforms for less than $1.....(design
idea added 9/08) |
|
MonoStable Flip Flops One Shot - (electronic schematic / circuit added 4/02) |
|
NanoPower LC Colpitts Oscillator Circuits - Circuit Ideas for Designers
Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
|
Negatrons Enrich Filter Oscillator Designs - 07/21/94 EDN-Design Ideas: The latest
wave of high-performance op amps allows you to incorporate "negatrons" (synthesized
negative resistors)into your oscillators and filters. Fig 1 shows the universal
filter/oscillator circuit based on a simulated lossy inductor and a negative
resistance, which compensates.....(design idea added 3/03) |
|
NTSC Test Signal Generator - An accurate test signal generator for television
calibration and measurements. (added 6/06) |
|
One IC 2 Tones Siren Double Tone Police Sound Single Tone Old Ambulance Sound -
This circuit is intended for children fun, and is suitable to be installed on
bicycles, battery powered cars and motorcycles, but also in models and other games.
With SW1 positioned as shown in the circuit diagram it reproduces the typical dual
tone sound of Police....(added 9/04) |
|
One Second Time Base from Crystal Oscillator - (electronic circuit added 7/03) |
|
OpAmp Oscillators Simplify RF Designs - 10/10/96 EDN-Design Ideas: (design idea
added 3/03) |
|
Oscillator Circuit Types - Electronic Circuit design (added 02/05) |
|
Oscillator Lowers Distortion & Phase Noise - 08/18/94 EDN-Design Ideas: In
addition to its normal role of controlling oscillation frequency, the crystal in Fig 1
also acts as a high-Q, self-tuned output filter, which rejects the noise and harmonics
of its input voltage, VB. The result is a clean output-frequency spectrum. With
an.....(design idea added 3/03) |
|
Oscillator turns on Instantly off Synchronously - 05/23/96 EDN-Design Ideas:
(design idea added 3/03) |
|
Oscillator uses dual output current controlled conveyors - 11/13/08 EDN-Design
Ideas: , Varying the bias current of dual-output current-controlled conveyors
controls the frequency of oscillation of the circuits.....(design idea added 08/09) |
|
Pager Testing Using the 8648A with an Internal Pager Encoder, Option 1EP - Agilent
Application Note (added 6/06) |
|
PC's serial Port controls programmable sine wave generator - 09/01/06 EDN-Design
Ideas: Audio-frequency signal source uses few components.....(design idea added 10/06) |
|
PIC Controlled DDS VFO 0 to 6 MHz - (electronic schematic / circuit added 4/02) |
|
Pierce Crystal Oscillator Design - The Pierce oscillator ... is essentially a
common emitter amplifier with a tuned circuit for a collector load and a quartz
crystal as a feedback element. In order to determine whether the Barkhausen criteria
is satisfied, loop gain must be determined at the frequency of oscillation. This is
accomplished by drawing the AC equivalent circuit of the Pierce Oscillator... (added
02/05) |
|
Pierce-gate Oscillator Crystal load calculator - RF Design Design Tips, July 2004
(added 02/05) |
|
Portable DAC with Headphone Amplifier - This portable DAC can improve the sound
from portable devices, such as PCDPs, and other digital gear that has a TOSLINK
optical or coax digital output. It features the Burr-Brown DIR1703 receiver and the
Analog AD1866 DAC ICs for digital conversion and a high-quality….(electronic circuit
added 01/08) |
|
Positive Feedback - The use of positive feedback is useful for producing
oscillators. The condition for positive feedback is that a portion of the output is
combined in phase with the input. For an amplifer with positive feedback the gain is
given by the expression below. (added 02/05) |
|
PRBS generator runs at 1.5 Gbps - 03/29/07 EDN-Design Ideas: FPGA and serializer
generate fast sequences to test communications links.....(design idea added 04/07) |
|
Precision Waveform Converter uses Sawtooth Wave - 03/01/96 EDN-Design Ideas:
(design idea added 03/03) |
|
Programmable analog circuits yield single chip sinusoidal oscillators - 01/19/06
EDN-Design Ideas: Internally programmed low-pass filters yield classic RC
oscillator.....(design idea added 2/06) |
|
Programmable Oscillator uses Digital potentiometers - 03/07/02 EDN-Design Ideas:
Digital potentiometers are versatile devices; you can use them in many filtering and
waveform-generation applications. This Design Idea describes an oscillator in which
setting the resistance of two digital potentiometers independently programs the
oscillation amplitude and frequency.....(design idea added 1/05) |
|
Programmable Ramp Generator has 14 Bit Linearity - 09/12/96 EDN-Design Ideas:
This linear ramp generator uses a DAC, a transistor array, MOSFET switches, and
current-steering techniques to achieve 14-bit linearity (Figure 1). The output current
of IC1, a DAC-10, is a product of the digital code and the reference-current input,
where IO=(code/1024)×2IR. IR is.....(design idea added 5/02) |
|
Programmed reference oscillator generates nonstandard clock frequencies - 04/27/06
EDN-Design Ideas: Small assembly-language process exploits equalized, fixed-length
branch loops with only 12 instructions.....(design idea added 9/08) |
|
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.....(design idea added 3/03) |
|
Quad Astable Mode Operation Free Running Oscillator - Circuit Ideas for Designers
Application Notes Advanced Linear Devices, Inc. (app note added 6/06) |
|
Reflections: Computations & Waveforms - National Semiconductor Application Note
(app note added 2/06) |
|
Resonant Frequency of a Colpitts Oscillator - Electronic Circuit design (added
02/05) |
|
Resonator BFO Circuit - This circuit was used to stop all the BFO drift. The
circuit is extremely stable. Turn the receiver off, and then on at any time and
temperature, the BFO frequency is exactly the same. (added 02/05) |
|
RF Oscillator uses Current feedback OpAmp - 10/03/02 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,.....(design idea added 1/05) |
|
RF Signal Generator - (electronic design / schematic added 2/05) |
|
Rounding Off' a Square Wave - ASCII format (added 7/03) |
