Sign in

username:

password:



Not a member?

Search Sci.Electronics.Design



Search tips

design by Keywords

8051 | Amplifier | AVR | CMOS | Converter | DAC | Diode | FPGA | GPS | I2C | IDE | Laser | LCD | MOSFET | Op-amp | Oscillator | Oscilloscope | PID | PLL | PSU | PWM | RFID | RS232 | RS485 | SMPS | Spice | Transformer | Transistor | TTL | USB | VCO

Ads

See Also

DSPEmbedded SystemsFPGA

Oscillator


Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.

We found 614 threads matching "oscillator"

You are looking at page 1 of 16.

The most relevant threads are listed first

Hoorah for the patent system

nospam - 2008-01-06 16:58:00
I stumbled across this United States Patent 7236062 granted to Broadcom last year 1. A method for reducing noise in a circuit, the method comprising: receiving a first voltage at a positive potential input of an oscillator circuit comprising an oscillator core and a buffer coupled to an outp...Hoorah for the patent system

opamp sine wave oscillator

Inventor - 2008-02-04 17:32:00
Hi, hope I'm posting to the right place. I created a nifty little sine wave oscillator. I have no plans to patent it just want to tell the world about it cause I think it's pretty cool. You can download the pdf file here: http://www.freedomodds.com/osc/ I like it for lots of reasons, but...opamp sine wave oscillator

Austron Oscillator Datasheet/Pinout Needed

Jim Flanagan - 2009-04-20 06:13:00
I am searching (for some time now) for data on an Austron Oscillator model #1630-2R (10 MHz). This oscillator has a an octal base and requires +12V for the osc and +26V for the oven. The osc case shows a NAVAIR part # 247AS-C0393-001. I've had no luck searching for either of these numbers...Austron Oscillator Datasheet/Pinout Needed

Switching of crystals in crystal oscillator using a 74HC4316 ??

sparks - 2009-03-11 16:17:00
Hi, Ive got a radio that has rotary switch selection of crystals for the 1st local oscillator. I want to have electronic selection, where I can change the crystal selected by use of control lines. Can I use something like the 74HC4316 to do this without stuffing up the capacitance of the oscil...Switching of crystals in crystal oscillator using a 74HC4316 ??

Crystal Serie VS Parallele

Jacques St-Pierre - 2008-03-20 08:33:00
Hi, Anyone can explain to me the difference in configuration require for a serie or parallel crystal pierce oscillator. I wish to use a SB74LVC1404 chip to build a oscillator using a 3.000Mhz crystal. The application sheet use a parallel load crystal, but the only 3Mhz crystal I can found i...Crystal Serie VS Parallele

Whats different between these two circuits?

readeraz - 2008-07-23 19:04:00
Ringing choke circuit and blocking oscillator are different names of oscillator. Are they same meaning or they are different circuit in practice? How to distinctly identify them? thanks ...Whats different between these two circuits?

XO controlled 480Hz Oscillator

Chris - 2010-02-02 11:29:00
What is the simplest way to get 480Hz from a crystal controlled oscillator? Looks like most of the pre-packaged XO's and VCXO, seem to put out much higher frequencies. Would a series of dividers be the best way? Thanks, Chris KQ6UP ...XO controlled 480Hz Oscillator

FOX ESPRESSO 50MHz OSCILLATOR?

Hammy - 2009-11-12 22:38:00
I don't know if I'm pulling a mind fart are not but…. I'm using a FXO-HC736R-50.000 which is a 50MHz OSCILLATOR. The data sheet says the output swing should be 10% Vdd to 90%Vdd. I've tried one in my AD9834 DDS circuit it's the master clock and it's only swinging 1.3Vpp on a 2V dc offset....FOX ESPRESSO 50MHz OSCILLATOR?

Startable Oscillator

Kolja - 2009-09-06 04:36:00
Hi, I need an oscillator circuit that starts immediately with a known startup delay from an enable signal. Frequency stability should be below 1% over roughly 10ns, so it does not need to be very stable. The frequency is in the range of a few GHz. I would be happy to discuss the design her...Startable Oscillator

Re: EMI prevention / protection?

whit3rd - 2009-10-30 14:26:00
On Oct 30, 7:43=A0am, "dave.harper" wrote: > I'm using a wein bridge oscillator as an audio tone generator in a > radio modem (~2kHz). =A0Ironically, when the transmitter is turned on, > RF from the transmitter (~144MHz) causes the oscillations to die > pretty quickly (a fraction of a sec...Re: EMI prevention / protection?

Re: Startable Oscillator

Paul Keinanen - 2009-09-09 12:59:00
On Wed, 9 Sep 2009 01:29:11 -0700 (PDT), Kolja wrote: > > Not actually minimum delay, but a very precise delay. I assume that precise > delays are easier to achieve for small delays, but we can handle any > delay as long as it is well known. > > All edges of the oszillation must occure...Re: Startable Oscillator

LT Spice schmitt oscillator

John Larkin - 2009-10-08 17:46:00
Does anybody have a working LT Spice netlist for a simple schmitt inverter/R-C oscillator? I tried one using the library schmitt inverter and get obscure sim errors, and I don't understand the HELP stuff. What's the third pin in the corner for? Ground? Thanks, John ...LT Spice schmitt oscillator

mc33063 current limiting

Michael Robinson - 2010-01-05 20:54:00
How does the current limiting work in the MC33063. The datasheet doesn't explain the actual mechanism. http://www.onsemi.com/pub_link/Collateral/MC34063A-D.PDF Does it discharge the timing cap when it detects overcurrent, which would restart the oscillator, or does it let the oscillator keep...mc33063 current limiting

3.3V version of SA602?

Joel Koltner - 2007-12-21 21:13:00
I posted this over in rec.radio.amateur.homebrew awhile back and didn't get any responses. Perhaps someone here knows? Anyone know of a replacement for the venerable SA602 oscillator/mixer that'll work down to 3.3V? I know that NXP has complete FM IF subsystems (e.g., the SA607) that work ...3.3V version of SA602?

Silicon CMOS oscillator at 430 GHz

Jan Panteltje - 2008-02-07 06:59:00
Silicon CMOS oscillator at 430 GHz http://www.sys-con.com/read/497124.htm ...Silicon CMOS oscillator at 430 GHz

DPSK oscillator quality

Henry Kiefer - 2007-12-29 14:00:00
Hi folks! At the moment I'm designing a DPSK transmission system. The question is how much bit-error-rate I get dependent on the actual difference of oscillator frequency =f(transmitter)-f(receiver). I'm using a costas-loop demodulator. I think this is one of the best algorithms/strategi...DPSK oscillator quality

Twin T Notch Filter Anomaly

Ian Bell - 2009-01-25 16:22:00
I have built a 2KHz twin T notch filter to help measure low level distortion harmonics in audio equipment by removing the fundamental (2KHz). It uses 510pF (1%)capacitors 150K (0.1%) resistors in a standard bridged T configuration. However a strange thing has happened. I have measured the no...Twin T Notch Filter Anomaly

Re: opamp sine wave oscillator

Glen Walpert - 2008-02-07 19:56:00
On Thu, 07 Feb 2008 17:51:38 -0500, John Popelish wrote: > Winfield Hill wrote: > > John Larkin wrote: > > > I'd imagine that most capacitors add distortion, too. > > > > Our 2ppm may well be coming from the caps. > > Down at 2ppm, I would start worrying about resistor > linear...Re: opamp sine wave oscillator

Baxandall class D oscillator, can it produce a triangle like waveform?

markp - 2010-07-22 10:00:00
Hi All, If I had a Baxandall class D resonant oscillator, would it be possible by modulating the current input to the drive circuit to produce a rounded off triangle like waveform? Bill Sloman's excellent work http://home.planet.nl/~sloma000/Baxandall%20parallel-resonant%20Class-D%20osci...Baxandall class D oscillator, can it produce a triangle like waveform?

Re: Cold spray, where do you buy?

whygee - 2010-04-11 05:42:00
Joerg wrote: > I always wondered why FPGA don't have a feature to program an on-chip > temperature sensor onto one pin, or at least a diode path. uC often have > that, for example the MSP430 series. The Actel Fusion family can do pretty temperature measurements, but they are ... a bit expe...Re: Cold spray, where do you buy?

building a sine wave oscillator

Joe - 2008-03-05 19:08:00
Hello to the group, I am looking for some ideas on how to build a 24khz sine wave generator to drive an ultrasonic piezo transducer. Or, if someone knows of a way that I can change a square wave from a 555 to a sine wave, that would work too. I have googled and found something called a wi...building a sine wave oscillator

CD player, simple pitch/tempo control

philip - 2008-02-21 16:50:00
I want to be able to change the pitch and/or tempo of music played on a CD player. This used to be a fairly common facility with some cheap CD players but is now difficult to find. Does anybody know how to do this in a simple way? I wondered if the crystal oscillator in the CD control circuitry ...CD player, simple pitch/tempo control

Solid state S-band power oscillator

Spehro Pefhany - 2009-09-14 20:56:00
What do you folks think is the best efficiency that can practically be achieved (DC-microwave) in a solid state (not magnetron) S-band power oscillator, say 50 - 150W output? Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" s...Solid state S-band power oscillator

Re: Buzzer circuit question

mike3 - 2010-04-06 19:36:00
On Apr 6, 7:19=A0am, John Fields wrote: > On Mon, 5 Apr 2010 19:07:56 -0700 (PDT), mike3 > wrote: > > > Hi. > > > How would one make a circuit that has a buzzer that, upon a trigger > > being tripped, produces a buzz lasting, say 1 second, then stops until > > reset? Even with ...Re: Buzzer circuit question

Modulation doubts

Nimo - 2009-05-16 00:18:00
Hi engineer.., well, I think my question will be most basic to you yet I need your help :-) Modulation:- (a) Freuency (b) Amplitude well, I don't have any problem with frequency modulation because from an electronic Oscillator we can produce frequncies depending upon our requirements...Modulation doubts

OT: New species found ! Sweep Oscillator Bird.

Eeyore - 2008-12-17 10:27:00
I was just recovering from a ghastly migraine, the first bad one I've had in decades, when I heard this strange noise. I thought it might be my hearing but no, there it was again. A bird in the garden was making a noise like a sweep oscillator. I'd guess it started at ~300Hz and swept up to 3k...OT: New species found ! Sweep Oscillator Bird.

Re: 38 KHz IR xmtr

whit3rd - 2010-05-24 17:32:00
On May 22, 2:29=A0pm, "lektric....@gmail.com" wrote: > Why are there no one-chip 38KHz oscillators for remote control > [ hobbyists? ] The combined functions of 38 kHz oscillator, NAND gate, and LED driver, is presumably what you're asking for? Gated CMOS oscillators (crystal clocks w...Re: 38 KHz IR xmtr

Re: Does not have any harmonics

Phil Hobbs - 2008-02-24 02:40:00
Robert Baer wrote: > Phil Hobbs wrote: > > > So it isn't just a matter of definition--exponential functions, > > including sines and cosines, really are fundamental to a wide range of > > physical processes. Another way of saying this is that just about all > > the equations of ...Re: Does not have any harmonics

Re: unstable opamp ringing oscillating and such

George Herold - 2010-08-11 12:45:00
On Aug 11, 10:49=A0am, panfilero wrote: > can anyone in here explain why a OpAmp could oscillate or become > unstable if there are 2 poles before it reaches 0dB on a plot of gain > vs frequency? > > Here's what I've gathered thus far... there's a cap internal to the op- > amp, that ca...Re: unstable opamp ringing oscillating and such

Re: John Larkin's LC oscillator

default - 2010-06-08 09:59:00
On 8 Jun 2010 03:39:30 -0700, Winfield Hill wrote: > > With your explanation, the oscillator is much more attractive. > Some folks can't stomach magnetics, perhaps that's part of the > criticism. Anyway, ignore JF and JT when they get bitchy, it > must be something they ate, or is a...Re: John Larkin's LC oscillator

Re: opamp sine wave oscillator

Jim Thompson - 2008-02-07 20:42:00
On Fri, 08 Feb 2008 00:56:16 GMT, Glen Walpert wrote: > On Thu, 07 Feb 2008 17:51:38 -0500, John Popelish > wrote: > > > Winfield Hill wrote: > > > John Larkin wrote: > > > > I'd imagine that most capacitors add distortion, too. > > > > > > Our 2ppm may well be coming from th...Re: opamp sine wave oscillator

Colpitts Oscillator, less "universal"

Robert Baer - 2008-11-16 04:37:00
150K 120K +-----/\/\----+-----/\/\--+---> | | | | | |/------+ --- +--------+---| 2N2369A - | | |\ | C1 --- V | 330p --- | ...Colpitts Oscillator, less

Sinusoidal oscillator configuration

Nick Zalutskiy - 2008-08-24 20:42:00
I am looking for a minimal hardware circuit to generate a 125 kHz sinusoidal wave to be fed into the power stage that is in turn feeding an antenna. The wave is used to generate a carrier frequency for an RFID application. I was thinking of using this [ http://www.ecsxtal.com/store/pdf/ecs-31....Sinusoidal oscillator configuration

PSpice Simulation Problem (not the desired ouput)

electro_1 - 2010-06-10 11:00:00
Hello all! I am trying to simulate a circuit from a book called "DESIGN AND DEVELOPMENT OF MEDICAL ELECTRONIC INSTRUMENTATION : A Practical Perspective of the Design, Construction, and Test of Medical Devices " by DAVID PRUTCHI and MICHAEL NORRIS. This is the circuit: http://img571.images...PSpice Simulation Problem (not the desired ouput)

Re: External Quarzoscillator with SMA Output

Tom Bruhns - 2008-07-03 13:34:00
On Jul 3, 9:56 am, Rob Berger wrote: > Hi > > I am currently looking for an external quarzoscillator that can be used > to clock a chip. The chip has a SMA socket, so I would need in some way > an oscialltor that could be connected to this SMA socket. The frequency > I am looking for ...Re: External Quarzoscillator with SMA Output

Re: Feedback resistor in CMOS Xtal oscillator.

John Larkin - 2010-04-15 10:16:00
On Wed, 14 Apr 2010 22:45:04 -0700, Robert Baer wrote: > pimpom wrote: > > I'm experimenting with a 32.768kHz oscillator using a watch > > crystal (no specs) and a CMOS inverter. The current limiting > > resistor is 330k and the caps are both 15pF. It oscillates with > > 4.7-10Meg ...Re: Feedback resistor in CMOS Xtal oscillator.

Re: accurate timing/clock for microcontroller? (for measuring bpm)

Bob Monsen - 2008-03-11 11:46:00
wrote in message news:9c27d683-95c3-4c38-b4b7-fd8b46ca2660@n36g2000hse.googlegroups.com... > I would like to build a drum machine/metronome > using a BASIC Stamp 2 (maybe later on PICAXE) > which would allow the user to control > the beats per minute (bpm) with a dial/potentiometer. > ...Re: accurate timing/clock for microcontroller? (for measuring bpm)

Re: Choosing ceramic capacitors

John Larkin - 2009-05-17 15:13:00
On Sun, 17 May 2009 11:28:45 -0700 (PDT), osr@uakron.edu wrote: > Ok, opposite question, whats the WORST dielectric with respect to > applied voltage, A idea for a VCXO comes to mind. > > Steve Roberts You could make all sorts of fun stuff from nonlinear ceramic caps... VCO Parametric ...Re: Choosing ceramic capacitors

Re: stretching a pulse

John Fields - 2010-09-03 18:12:00
On Fri, 03 Sep 2010 13:55:21 -0700, John Larkin wrote: > On Fri, 03 Sep 2010 13:39:46 -0500, John Fields > wrote: > > > On Fri, 03 Sep 2010 11:06:56 -0700, John Larkin > > wrote: > > > > > On Fri, 3 Sep 2010 13:13:56 -0400, "tm" > > > wrote: > > > > > > > > > > > "John ...Re: stretching a pulse

An oscillator for Mr. Williams

Bitrex - 2010-07-15 04:18:00
Your earlier posts got me experimenting with some blocking oscillator circuits. Here's something a little bit different using an autotransformer - I found this circuit in a cute 1965 book titled "Industrial Transistor Circuits." The coil I used was 15 turns of 16 gauge for the top winding ...An oscillator for Mr. Williams
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | next