1000 Threads found on edaboard.com: Rc Coupled Amplifier Circuit
Ampr/RC coupled amplifier1.htm
Electronic Elementary Questions :: 08-14-2006 06:48 :: my_books :: Replies: 1 :: Views: 9619
Reactance of a capacitor is Xc=1/(2*pi*f*C). It is infinite at f=0Hz and zero at infinite frequency.
At RC coupled amplifiers, in general, we can have different examples. The coupling capacitor and the resistor which follows it and which is grounded form a highpass filter. For passband frequencies it's capacitance should be large enough to presen
Electronic Elementary Questions :: 10-24-2004 13:58 :: Borber :: Replies: 1 :: Views: 1634
How can I design a RC coupled CE amplifier with stability factor 5 and gain 20 dB.IF S.F = 1+ Rb/Re,how to design?
Analog Circuit Design :: 06-05-2009 23:43 :: Anjana123 :: Replies: 0 :: Views: 2451
I'm using a 1 MHz crystal oscillator and a crude amplitude modulation circuit (shown below), and I wanted to amplify the output. I wondered if anyone knew of a circuit I should use to amplify this?
I'm also assuming there would be a problem with harmonics flooding other frequencies, could I filter these out usin
RF, Microwave, Antennas and Optics :: 09-06-2014 05:36 :: Resistanceisfutile :: Replies: 5 :: Views: 195
This is a source impedance lowering circuit.The base voltage is reduced by Vbe and available to the output at Ro/hfe ..
This is very low impedance drive maintaining the voltage swing the same .
Electronic Elementary Questions :: 07-31-2011 09:50 :: vimalkhanna :: Replies: 2 :: Views: 545
use the inverting summing op-amp attached
set Rf to 100 KOhm
Ra=12.5 KOhm ......(8va)
Rb= 50 KOhm .......(2Va)
Rc = 25 KOhm .......(4Vc)
the output voltage expression is Vo=-(Rf/R1.va+Rf/R2.vb+Rf/R3.vc)
Hobby Circuits and Small Projects Problems :: 11-20-2012 00:21 :: Junus2012 :: Replies: 1 :: Views: 580
I want to demonstrate a coupled oscillator circuit at graduate level. Can any one suggest some thing?
Professional Hardware and Electronics Design :: 12-07-2001 05:59 :: billano786 :: Replies: 1 :: Views: 1937
You can easily build one with very few components with a monolithic amp of Minicircuits (MAR, ERA) or HP/Ag_ilent (MSA, INA) for a few $.
RF, Microwave, Antennas and Optics :: 01-16-2003 17:56 :: g579 :: Replies: 4 :: Views: 2532
CMOS RF device modeling and low-noise amplifier circuit design
RF, Microwave, Antennas and Optics :: 06-20-2004 09:35 :: microwaveboy :: Replies: 1 :: Views: 1194
where to get balanced amplifier circuit diagram for practise and learning...pls
RF, Microwave, Antennas and Optics :: 03-25-2005 22:17 :: kent616 :: Replies: 2 :: Views: 1699
Based on the following attached MPS5179 amplifier circuit, I want to design the same circuit for 62MHz. The circuit shown was designed for 38MHz.
The input is 62MHz 15mVp-p and the desired output should be 500mVp-p and V+ = 4V.
What will the value of resistor next to V+ and L2. Will the L2 need to be fixed or (...)
Analog Circuit Design :: 08-02-2005 13:23 :: emax0198 :: Replies: 6 :: Views: 789
The transmission line looks like it is a quarter wave RF choke function. It supplies the power to the transistor drain/collector.
The impedance the PI output network transforms the load to is based on the Vcc value and the output power required. This is a power amplifier and efficiency and output power are more important than small signal gain
RF, Microwave, Antennas and Optics :: 12-02-2005 11:44 :: flatulent :: Replies: 1 :: Views: 1077
in common source cmos amplifier circuit which one is prefarable to to decrease l/w ratio for pmos or to increase the same for nmos for increased performance
Analog IC Design and Layout :: 01-31-2006 02:47 :: shiva :: Replies: 2 :: Views: 1035
ELectronic circuits. Analisys, Simulation and Design
Prentice Hall (now pressman)
N. R. Malik
Analog Circuit Design :: 04-02-2006 21:44 :: Miguel Gaspar :: Replies: 3 :: Views: 1394
I want to setup this amplifier with gain=20dB and stability factor=5
Here which resistor is to be designed with conventional design
and which is to be calculated with the above equation
to get the both of the designing requirements satisfied
Please help me!
Analog Circuit Design :: 07-10-2006 21:47 :: sreejith :: Replies: 0 :: Views: 847
I want to setup R.C coupled amplifier with gain=20dB and stability factor=5
, here Stability Factor=5=1+R(base)/R(emitter)
Here which resistor is to be designed with conventional design and which is to be calculated with the above equation to get the both of the designing requirements satisfied
Please help me!
Electronic Elementary Questions :: 07-11-2006 09:20 :: sreejith :: Replies: 0 :: Views: 1072
Right, you need to make a total new design for 5.8GHz applications except the topology may keep the same, since any factors are co-related. List all specifications including the desired frequency. Figure out which one is the biggest bottleneck. then all other circuit parameters are calculated based on this parameter. Probably, theoretical resul
RF, Microwave, Antennas and Optics :: 09-14-2007 15:25 :: pipida :: Replies: 4 :: Views: 1574
I face a problem with the amplifier circuit of 5 level multi level inverter circuit.
The main problem is summarized in that i need to drive number of MOSFETs (IRF540N) and I found that if i used an amplifier circuit will be good, but when i tried to drive the MOSFET i got that i need a driving (...)
Analog Circuit Design :: 05-09-2009 14:45 :: Ahmed Waleed :: Replies: 0 :: Views: 1739
what is the function of a transistor in an amplifier circuit:cry:
Other Design :: 07-18-2009 06:13 :: nges :: Replies: 0 :: Views: 1138
i need a guideline to construct a precision amplifier circuit to a motor driver(OPA 541). my input voltage is from -5V to 5V whic from PIC18F4331. Anyone can help me?? pls reply thanks.
Analog Circuit Design :: 08-26-2009 21:32 :: thiam :: Replies: 3 :: Views: 928
Hi, I have attached a picture of an amplifier circuit that I need help solving. Thanks in advance! :)
Analog Circuit Design :: 12-06-2009 00:32 :: zainmz :: Replies: 2 :: Views: 682
Hi, I attached a picture of a circuit I need help solving. This is an amplifier circuit with BJT current mirrors. Any help is appreciated!
Electronic Elementary Questions :: 12-06-2009 10:01 :: zainmz :: Replies: 6 :: Views: 1648
I need current amplifier circuit which will provide output 1A to 10A for low current or voltage variation. please provide circuit or ideas
Power Electronics :: 03-04-2010 02:15 :: santhusharu :: Replies: 0 :: Views: 333
If you want to save minimise power then don't use the LM741. If the problem is "don't waste power even with the LM741" then usually it will involve trying to use the largest resistor values possible while still making sure the circuit works.
Analog Circuit Design :: 03-09-2010 13:09 :: keith1200rs :: Replies: 6 :: Views: 531
Hey guys. I have a Philips Mini HiFi audio system that is damaged. But the speakers are fine. They are 3200 watt stereo (two speakers) and 1600 watts surround (two speakers) PMPO. Can anyone please tell me how much this power is in RMS? Also, I would like a good amplifier circuit for it including power supply...
Power Electronics :: 06-07-2010 13:50 :: lpkvh08 :: Replies: 1 :: Views: 1225
this is an instrumentation amplifier circuit...here at non inverting terminal of the op amp reference point is connected..what is the use of this point?what happen if i ground this point..help me please..i am attaching this file..
Analog Circuit Design :: 10-05-2010 01:32 :: NARENDRA1234 :: Replies: 1 :: Views: 418
Design a single ended amplifier circuit (single input, single output) with all the bias circuits
to meet the following specification:
1) minimum DC gain is 4000
2) Total current withdrawn from power supply is 250mA
3) Vdd= 3.3 volts
4) Load capacitance is 250fF
5) maximum total on chip resistance (if needed) is 100Kohm
6) BW is to be (...)
Analog IC Design and Layout :: 11-19-2010 16:54 :: iwanttoabsortalltheknowle :: Replies: 1 :: Views: 1180
This circuit works like a bridge: Q3-Q2 or Q1-Q4, but not both pairs at the same time, so both inputs should not be ?H? at the same time ..
To generate sound you need one of MCU pins to produce a square wave and vary the frequency if you want to change the tone ..
Analog Circuit Design :: 01-05-2011 01:36 :: IanP :: Replies: 2 :: Views: 868
First post so be gentle.
I am need of a amplifier circuit that has the following characteristics:
1uS rise time
250VDC 2ma max O/P
0-5Vdc I/P for 0-250Vdc O/P
I have used the monolithic stuff from MS Kennedy and Apex but
cost and form factor are an issue. The amp is used to drive a
charge plate with a 6' length of COA
Analog Circuit Design :: 01-08-2011 18:56 :: Andrew99 :: Replies: 2 :: Views: 303
Hi,I am looking to build a powerful Electric Guitar amplifier there somebody who can send me circuits about that==:oops::!:
Electronic Elementary Questions :: 01-24-2011 09:16 :: yavolzzz :: Replies: 4 :: Views: 1503
I need a power amplifier circuit for (Ground Penetrating Radar) project, i have a Pulse generator & Crystal osc. with freq.=60Mhz and Multiplier in my project.
I need power amplifier to increasing power before transmitting it through Antenna
Analog Circuit Design :: 03-14-2011 18:48 :: khos :: Replies: 3 :: Views: 754
How to find input impedance of RC phase shift circuit ?
Electromagnetic Design and Simulation :: 04-05-2011 22:20 :: pankaj.patil :: Replies: 4 :: Views: 1117
Dear all, Please i need help designing a three coupled tune circuit as a bandpass filter. Firstly i'm a novice in microwave, so please bear with me. Please is there a formula that can be use to design these things? I'm quite frantic so i don't really want to go into so much depth, as I've been told it's quite hard to design from scratch.
RF, Microwave, Antennas and Optics :: 01-19-2012 08:40 :: Meerzscht :: Replies: 1 :: Views: 284
HI i amm trying to answer this question, can anyone help please THANKS
. The company currently has a low noise amplifier circuit for which the LM4136 and the LMC6034 operational amplifiers are contenders. Determine the total noise generated for each and so recommend the best.
Some circuit details are as follows. (...)
Analog Circuit Design :: 02-08-2012 08:42 :: keatescarn :: Replies: 2 :: Views: 359
I need a power amplifier circuit that has to drive a 50W speaker with no IC (integrated circuit) has a transistor and with a pre amplifier on it..
And show the computation of the pre amp if you will ;) tnx!!
Electronic Elementary Questions :: 02-18-2012 01:42 :: pipoyz07 :: Replies: 1 :: Views: 389
Share your circuit here?...
Electronic Elementary Questions :: 02-29-2012 12:59 :: radnusmar :: Replies: 1 :: Views: 287
I have speakers Edifier R100.
Here are the specifications :
I am not satisfied with its performance, the base got too noise when i increase the volume. I want to modify them using any high power amplifier.
As Input Impedance: 10K Ohms , can someone suggest me any high power amplifier c
Hobby Circuits and Small Projects Problems :: 05-15-2012 03:02 :: Jahanzeb1 :: Replies: 2 :: Views: 1083
I am trying to construct this amplifier circuit with an LM386 Chip. Can anyone tell me if they see any errors? I cannot get it to work.
Hobby Circuits and Small Projects Problems :: 01-12-2013 15:52 :: McDroo :: Replies: 3 :: Views: 760
I'm an undergraduate trying to figure out my final year project. I have in in mind a hospital communication system.. which connects the doctor,nurse and patients... it should also indicate in the nurse room the bed number and the ward the signal is coming from.. I intend to use a simple but intercom circuit that is based fully on transistors.. i.e
Hobby Circuits and Small Projects Problems :: 02-04-2013 16:22 :: mikkyng :: Replies: 3 :: Views: 498
Can any body help me by sending a basic instrumentation amplifier circuit diagram using Ad 620 ic.I need a gain of about 100 or below 100.
Electronic Elementary Questions :: 02-13-2013 00:58 :: shibas :: Replies: 3 :: Views: 524
Am in the process of designing a voice trained robot circuit..
For that I've built an amplifier...and it is working well..
(link to amplifier circuit that i built: ... /Lab1b.pdf)
But, now I want to interface MIC to this circuit..
I thought of using i378MV iBall MIC for my applicatio
PC Programming and Interfacing :: 02-27-2013 01:59 :: arivalagan13 :: Replies: 0 :: Views: 273
Post the circuit schematic.
Analog Circuit Design :: 06-03-2013 18:22 :: crutschow :: Replies: 3 :: Views: 329
i am trying to make an amplifier circuit(Speaker Using Transistor BD139). Now calculating Q parameters( I_CQ & V_CEQ) problem with selection of "Beta" From the datasheet I can choose it but Datasheet has the graph(hFE Vs I_C) for V_CE=2V, But my calculating V_CEQ=5.5V. So how can I choose My Beta for Design.
Here the Datasheet Link...
Electronic Elementary Questions :: 06-26-2013 06:54 :: Tutan Debnath :: Replies: 2 :: Views: 242
I have a problem with my amplifier input to gate of mosfet is 2Mhz from microcontroller and bias voltage is 30v.when I measure voltage at the terminal of the dc blockin capacitor as i have given in the following picture it shows voltage low close to zero and the frequency about 300 khz.what is the problem ?Because according to the princ
Analog Circuit Design :: 09-20-2013 11:42 :: rakirajueee08 :: Replies: 3 :: Views: 338
i am a final year student.. i want to make a gsm signal signal booster antenna, for which i have to make an amplifier circuit to amplify the incoming signal,. i also need help in antenna design,, any help will be highly appreciated,,,,
Digital communication :: 09-26-2013 09:53 :: zafran :: Replies: 0 :: Views: 546
I am working with this amplifier circuit attached .When I am giving supply to the circuit my mosfet is getting hot and burning out.Someone can you please suggest me solution for this.hank you so much.99008
Electronic Elementary Questions :: 11-25-2013 03:49 :: rakirajueee08 :: Replies: 3 :: Views: 236
It is most likely that you are hearing hum from the AC mains power, either coupled through your power supply circuit or being picked up as noise by a nearby fluorescent lamp. You will have to post some pics or schematic of your circuits for us to offer specific help.
Analog Circuit Design :: 02-15-2014 13:23 :: ftsolutions :: Replies: 11 :: Views: 786
Sir, I want designing circuits with component values for the following circuits
1. Common Emitter amplifier
2. Common Source amplifier
3. Two Stage RC coupled amplifier
4. Current shunt and voltage series Feedback amplifier
5. Cascade amplifier
Electronic Elementary Questions :: 01-18-2011 09:41 :: jravi :: Replies: 1 :: Views: 489
The gain of a single transistor without a load is almost Rc/Re. The transistor has an internal Re that is in series with the Re in the circuit. So the max gain without an Re in the circuit is about 150.
But in the multi-stage amplifier the first and second Rc's have the two base-bias resistors (missing in your schematic) and the input (...)
Electronic Elementary Questions :: 06-15-2009 21:34 :: Audioguru :: Replies: 3 :: Views: 3317
The fact that its DC coupled indicates, that you dont need to restore your DC point (which is the case with AC coupled circuits), after your input cap on the line. Usually you recover the DC point by some sort of 'clamp' circuit' which may be some follower like architecture.
Anways, you can implement a multistage (...)
Analog Circuit Design :: 12-30-2009 10:19 :: EmbdASIC :: Replies: 4 :: Views: 2513