(LT SPICE ) i need hlep

Started by Tech-electro in sci.electronics.design6 years ago 1 reply

Hi my problem is hoe i can find Q-point of amplifier mosfet

Hi my problem is hoe i can find Q-point of amplifier mosfet


Re: Why Adding a Voltage Amplifier after a Transimpedance Amplifier reduce BW? Book Claim by 0.64

Started by George Herold in sci.electronics.design5 years ago

On Thursday, May 14, 2015 at 3:06:27 PM UTC-4, John Larkin wrote: > On Thu, 14 May 2015 10:04:27 -0700 (PDT), Felipe Jimenez > wrote: > ...

On Thursday, May 14, 2015 at 3:06:27 PM UTC-4, John Larkin wrote: > On Thu, 14 May 2015 10:04:27 -0700 (PDT), Felipe Jimenez > wrote: > > > On Thursday, May 14, 2015 at 9:28:05 AM UTC-7, John Larkin wrote: > > > On Thu, 14 May 2015 09:15:53 -0700 (PDT), George Herold > > > wrote: > > > > > > > On Thursday, May 14, 2015 at 11:57:36 AM UTC


Re: Why Adding a Voltage Amplifier after a Transimpedance Amplifier reduce BW? Book Claim by 0.64

Started by John Larkin in sci.electronics.design5 years ago

On Thu, 14 May 2015 10:48:03 -0700 (PDT), Felipe Jimenez wrote: > On Thursday, May 14, 2015 at 10:18:10 AM UTC-7, Phil Hobbs wrote: > > ...

On Thu, 14 May 2015 10:48:03 -0700 (PDT), Felipe Jimenez wrote: > On Thursday, May 14, 2015 at 10:18:10 AM UTC-7, Phil Hobbs wrote: > > On 05/14/2015 01:12 PM, Phil Hobbs wrote: > > > On 05/14/2015 01:04 PM, Felipe Jimenez wrote: > > > > On Thursday, May 14, 2015 at 9:28:05 AM UTC-7, John Larkin wrote: > > > > > On Thu, 14 May 2015 09:15:53 -0700 (PDT), George Herold


Wow, this is a REAL AMPLIFIER !!!!

Started by Anonymous in sci.electronics.design9 years ago 36 replies

1015 watts RMS output.... http://www.chambonino.com/construct/const9.html

1015 watts RMS output.... http://www.chambonino.com/construct/const9.html


Bonnie Baker would be proud...

Started by JM in sci.electronics.design4 years ago 8 replies

http://www.edn.com/design/analog/4314332/Photodiode-amplifier-exhibits-one-third-the-output-nois e-of-conventional-transimpedance-amp

http://www.edn.com/design/analog/4314332/Photodiode-amplifier-exhibits-one-third-the-output-nois e-of-conventional-transimpedance-amp


experament

Started by muhaned alzedi in sci.electronics.design8 years ago 2 replies

the microphone use to transfer simple motion to electric , i want use the microphone for generate 5 volt or more by amplifier circuit and sorry...

the microphone use to transfer simple motion to electric , i want use the microphone for generate 5 volt or more by amplifier circuit and sorry for my language


Class B RF amplifier

Started by amal banerjee in sci.electronics.design12 months ago 12 replies

Can the class B configuration be used for RF amplifiers, given its inherent problem of cross over distortion All hints, suggestions are...

Can the class B configuration be used for RF amplifiers, given its inherent problem of cross over distortion All hints, suggestions are welcome. Thanks in advance.


Cute amplifier - bootstrapped

Started by Anonymous in sci.electronics.design8 years ago 222 replies

Adapted from something I saw on the web... I had to scratch my head until I understood C1: it bootstraps Q1's collector load (R2) impedance,...

Adapted from something I saw on the web... I had to scratch my head until I understood C1: it bootstraps Q1's collector load (R2) impedance, turning it effectively into a current source. Gain is accordingly greatly increased. G = ~220 @ 40KHz. +3.3V --- | .-------+-------. | | 5K R1 C1 ...


EG&G 113P Amplifier

Started by Anonymous in sci.electronics.design2 years ago 5 replies

Hi, anyone interested in a EG&G 113P Pre-amp? I never used it much and just verified it works at 10X gain. Please message and let me know. ...

Hi, anyone interested in a EG&G 113P Pre-amp? I never used it much and just verified it works at 10X gain. Please message and let me know. Asking $325. http://i64.tinypic.com/2e21e1k.jpg Thanks, Scot


Stupendously Expensive Amplifier

Started by Cursitor Doom in sci.electronics.design4 years ago 29 replies

What makes this amp justify its outrageous price tag, FFS? Is it due to it weighing in at 170 lbs per channel? Can it make the Sex Pistols...

What makes this amp justify its outrageous price tag, FFS? Is it due to it weighing in at 170 lbs per channel? Can it make the Sex Pistols sound like the Beach Boys or something? Where's the value here? http://tinyurl.com/jkkd2t4


Optocoupler suggestions

Started by bitrex in sci.electronics.design2 years ago 28 replies

What are some optocouplers you like that would be good for designs where they're used in unusual ways, like that "HV Opamp" thing JL likes where...

What are some optocouplers you like that would be good for designs where they're used in unusual ways, like that "HV Opamp" thing JL likes where they're used as the "output stage" of an amplifier? Are any characteristics that I should look for in the datasheet that makes a particular coupler a better performer in an application where linearity is more important than high-speed switching...


Nanoamp calibrator again

Started by Phil Hobbs in sci.electronics.design8 years ago 49 replies

So, I had a chance to get back to that calibration gizmo for my biochip front end amplifier (1 nA at the shot noise limit in a 100-MHz BW). It...

So, I had a chance to get back to that calibration gizmo for my biochip front end amplifier (1 nA at the shot noise limit in a 100-MHz BW). It turns out that it's possible to do a very nice job, assuming that the integration cap (C1 in the schematic) has zero inductance, but as much as 0.05 nH blows it out of the water. (Should have thought of that, of course, but oh well.) Try running ...


Free Schematic Capture for Vaccum Tubes

Started by David King in sci.electronics.design5 years ago 20 replies

Can anyone recommend a free software application for drawing a vaccum tube amplifier? I just need to show the symbols and wiring, not a...

Can anyone recommend a free software application for drawing a vaccum tube amplifier? I just need to show the symbols and wiring, not a simulation or cirucit board layout. Thank you, David King.


"Single Ended Push Pull Amplifier"

Started by Anonymous in sci.electronics.design7 years ago 14 replies

Just for the hell of it I decided to post this today. It's a little brainwr= eck of mine. I have looked around enough that I THINK it is...

Just for the hell of it I decided to post this today. It's a little brainwr= eck of mine. I have looked around enough that I THINK it is unpatentable bu= t I THINK it is a different implementation than usual, or at least I haven'= t seen it.=20 I have flippantly or lovingly (take your pick) dubbed it the "Class T" ampl= ifier for reasons beyond the scope of this text. (details available on ...


Amplifer Design

Started by Cursitor Doom in sci.electronics.design11 months ago 64 replies

Greetings, gentlemen, This is the schematic of the CRO x-amplifier I've been investigating lately. It's supposed to provide sufficient...

Greetings, gentlemen, This is the schematic of the CRO x-amplifier I've been investigating lately. It's supposed to provide sufficient potential difference to the x plates in the tube so as to sweep the electron beam left to right in accordance with the timebase setting: https://yandex.com/collections/card/5da36a58f05bf23ffde0742e/ At first I thought this was operating as some kind ...


Audio Amplifiers

Started by Cursitor Doom in sci.electronics.design4 years ago 69 replies

Hi all, What is the best configuration for those first crucial one or two stages of an audio amplifier? I mean when you're dealing with the...

Hi all, What is the best configuration for those first crucial one or two stages of an audio amplifier? I mean when you're dealing with the very low signal levels you typically get with phono cartridges (anyone remember them? - they're making a comeback!) in particular wrt to minimising noise and distortion? What's best for the front end? Are we talking long-tailed pair or something m...


lock-in amplifier

Started by scot in sci.electronics.design8 years ago 55 replies

Anyone have experience with lock-in amplifiers? I am thinking of purchasin= g a used one but don't know enough about them. I know they are...

Anyone have experience with lock-in amplifiers? I am thinking of purchasin= g a used one but don't know enough about them. I know they are extremely e= ffective at finding small signals buried in lots of noise but what are the = downsides to a lock-in besides expense? Also, this is probably over my head but I have read about the AD630 chip fr= om Analog Devices and supposedly that can be ...


How to select shunt capacitor for class E amplifier

Started by amal banerjee in sci.electronics.design6 months ago

Could some electronics guru please help ? I am trying to do some SPICE simulations for class E amplifiers. How is the shunt capacitor value...

Could some electronics guru please help ? I am trying to do some SPICE simulations for class E amplifiers. How is the shunt capacitor value calculated ? Any hints, suggestions would be helpful. Thanks in advance.


Whats Wrong with the DC300A answer

Started by Phil Allison in sci.electronics.design11 months ago 4 replies

Hi to all the terminally puzzled, --------------------------------- THE *problem* with the Crown DC300A is simple, but virtually unknown...

Hi to all the terminally puzzled, --------------------------------- THE *problem* with the Crown DC300A is simple, but virtually unknown in the industry. Any amplifier that has response to DC is similarly questionable as being suitable or safe to use driving loudspeakers or transformers. Such amplifiers produce a large DC component when driven into clipping with an un


how can people post things this stupid?

Started by John Larkin in sci.electronics.design7 years ago 111 replies

http://www.eeweb.com/electronics-quiz/single-ended-push-pull-amplifier -- John Larkin Highland Technology...

http://www.eeweb.com/electronics-quiz/single-ended-push-pull-amplifier -- John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation