PAL fails to realize that injection locking an oscillator requires an oscillator > :-} His post was an attempt to output a subharmonic without...

PAL fails to realize that injection locking an oscillator requires an oscillator > :-} His post was an attempt to output a subharmonic without the oscillator. There are better ways to handle such a scenario. For example, see my boom-box machine (circa 1979)... Here is an injection-locked OSCILLATOR....

Does anyone know the correct name for the 2 transistor LC oscillator that looks like a long tailed pair? I though it was a Franklin...

Does anyone know the correct name for the 2 transistor LC oscillator that looks like a long tailed pair? I though it was a Franklin oscillator - the google hits are ambiguous to say the least, but its possible I have the name wrong. Thanks for any help.

Hi, As an alternative to a bridge type setup I'm thinking of measuring a relatively low Q inductance (a lot of series resistance) by using...

Hi, As an alternative to a bridge type setup I'm thinking of measuring a relatively low Q inductance (a lot of series resistance) by using a tank circuit/oscillator. What kind of oscillator will be the least sensitive to the Q (oscillate closest to (2*pi* sqrt(LC))^-1?) ? And respond reasonably fast to changes in LC.. (seems like that's a conflicting requirement..) I have cont...

Hi I'm working on my ~3ns 4 diode sampler (preferable 1ns if possible) So I need a pretty good oscillator, with low jitter I have never...

Hi I'm working on my ~3ns 4 diode sampler (preferable 1ns if possible) So I need a pretty good oscillator, with low jitter I have never needed a good oscillator before, so on this topic I am totally at square one First I was thinking about an RC oscillator, and cleaning up the jitter. RC typically have 1us of jitter (found info on the web), and a crystal oscillator, standard t

The thread related to large signal PSpice models and an emitter follower comes from the following problem: I have an oscillator that should...

The thread related to large signal PSpice models and an emitter follower comes from the following problem: I have an oscillator that should drive a digital part of the system. In short, what is the best way to achieve this? My first attempt has been a common base Colpitts oscillator that gives a signal riding on the +Vcc rail. This has been AC coupled to a 74AC gate biased to the poin...

So here's a schematic of a standard LM386 power oscillator: http://www.interfacebus.com/lm386-square-wave-oscillator-circuit.jpg I have an...

So here's a schematic of a standard LM386 power oscillator: http://www.interfacebus.com/lm386-square-wave-oscillator-circuit.jpg I have an idea for a thing where what I'd like to have is a second LM386 oscillating at the same frequency and amplitude, but opposite phase as the first one, for push-pull drive. But I'd like to not use any further active parts other than the second LM386, if...

I'm trying to design an ultrasonic class C power oscillator to use with a project I'm working on. I'm vaguely basing it off a circuit I recall...

I'm trying to design an ultrasonic class C power oscillator to use with a project I'm working on. I'm vaguely basing it off a circuit I recall seeing in an early 1960s-era book called "Industrial Transistor Circuits". It seems I'm not remembering it correctly, and I don't really know much about the design of this type of oscillator as it's having some problems oscillating in simulation...

I'm buidling a little relaxaton oscillator for a project using a cd4093 quad nand gate with schmitt trigger inputs. I'm using a 200 ohm...

I'm buidling a little relaxaton oscillator for a project using a cd4093 quad nand gate with schmitt trigger inputs. I'm using a 200 ohm resistor and a 100n cap in the RC network. If I've done my calculations correctly, I was hoping to have an oscillator at around 30kHz. But my frequency counter is only showing around 8. Supply voltage is 5V. I understand that the frequency is depe...

Oscillator Proposal... Suppose I have a series RLC, one end grounded, the other end driven by a chip, how might I make that into an...

Oscillator Proposal... Suppose I have a series RLC, one end grounded, the other end driven by a chip, how might I make that into an oscillator? All wild ideas accepted... this is for a custom chip. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et ...

Could some electronics guru here please help ? What is the best way to select a transistor for an oscillator ? Consider a Colpitts oscillator...

Could some electronics guru here please help ? What is the best way to select a transistor for an oscillator ? Consider a Colpitts oscillator running at 5 MHz. The following are the analysis steps. 1. Select a value for the LC tank capacitor C1 = C2 = C 2. Select a load e.g., R=50 Ohm 3. To start oscillations, gmR > C2/C1. In this case gmR > 1 4. Using the oscillation frequency and

Is it at all possible to build an oscillator entirely from non-linear magnetics (OK, solid state diodes are allowed)? Best regards, Piotr

Is it at all possible to build an oscillator entirely from non-linear magnetics (OK, solid state diodes are allowed)? Best regards, Piotr

I have read a lot of stuff on this topic but find it hard to apply it. I have a 25MHz xtal. For example Kyocera CX3225GB25000P0HPQZ1. The spec...

I have read a lot of stuff on this topic but find it hard to apply it. I have a 25MHz xtal. For example Kyocera CX3225GB25000P0HPQZ1. The spec says typ drive level 10uW, 100uW max. The oscillator circuit is the usual Pierce one as in e.g. here https://electronics.stackexchange.com/questions/368945/crystal-oscillator-circuit-design?rq=1 The CPU is a STM32F407VGT6. The development ki...

JFET Colpitts Oscillator is kind of L-C oscillator, but this scheme has one inductor and two capacitors. Now it can be simulated...

JFET Colpitts Oscillator is kind of L-C oscillator, but this scheme has one inductor and two capacitors. Now it can be simulated on: http://www.cirvirlab.com/simulation/jfet_colpitts_oscillator_online.php read more: http://www.cirvirlab.com/index.php/tutorials/128-jfet-colpitts-oscillator-simulation.html

New tutorial is ready http://www.cirvirlab.com/index.php/tutorials/127-jfet-hartley-l-c-resonant-circuit-oscillator-si mulation.html ...

New tutorial is ready http://www.cirvirlab.com/index.php/tutorials/127-jfet-hartley-l-c-resonant-circuit-oscillator-si mulation.html It now can be simulated on: http://www.cirvirlab.com/simulation/jfet_hartley_oscillator_online.php

I don't want anybody to design it for me, but in general how would you make an oscillator with a sine output of constant amplitude over a range...

I don't want anybody to design it for me, but in general how would you make an oscillator with a sine output of constant amplitude over a range of supply voltage (let's say the operating range of the op-amp). What I have in mind is a battery supply, but with no power wasted in a regulator. Sure the oscillator would also waste power but not as much. Would a square output be simpler? ...

Can someone suggest where I should look for a used tunable RF oscillator around 1 MHz that can be phase modulated from an external input?

Can someone suggest where I should look for a used tunable RF oscillator around 1 MHz that can be phase modulated from an external input?

If the power supply voltage is high, say > =3V, it is pretty simple to design an oscillator (of unimportant output frequency and shape), which...

If the power supply voltage is high, say > =3V, it is pretty simple to design an oscillator (of unimportant output frequency and shape), which can be powered from an AC power source: just add a diode bridge at the power input lines and use any suitable DC-powered oscillator circuit. But what if the supply voltage is really low, say 0.2V? JFET-based oscillators can go really low, allegedly down

Hello, I've designed a simple R/C-Oscillator with a MC14060 (ON-Semi) C-MOS Logic IC. It's easy to calculate withe the formula f=1/(2.3*R*C) But...

Hello, I've designed a simple R/C-Oscillator with a MC14060 (ON-Semi) C-MOS Logic IC. It's easy to calculate withe the formula f=1/(2.3*R*C) But I can't find information on the tolerances for this frequency in the datasheet. I know it will be quite a lot. I guess 30 to 40%? But to really know if I can handle this, I need to know what exactly the manufacturer guarantees. Do other manufacturers (...

Could some electronics guru please help ? I am trying to find the frequency of oscillation for a common collector Colpitts oscillator ? For...

Could some electronics guru please help ? I am trying to find the frequency of oscillation for a common collector Colpitts oscillator ? For a common emitter Colpitts oscillator, the frequency of oscillation is focs = 1/(2*PI*sqrt(L*Ct)) where Ct is the equivalent capacitance of the two series capacitors. The resonator is used as PI circuit, with a series inductor and 2 shunt capacitors...

Quadrature oscialltor. Hi all, As part of the CV measurements (from a previous post) I'm thinking about a 1 MHz lockin. (Maybe a different...

Quadrature oscialltor. Hi all, As part of the CV measurements (from a previous post) I'm thinking about a 1 MHz lockin. (Maybe a different thread to talk about how to do the switching.) I was wondering if I could make a quadrature oscillator from opamps. (I've got some AD825's I thought I'd try.) Anyway spice seems to think it's possbile. Comments or ideas welcome. (Oh I had to add th...