217 Threads found on edaboard.com: How To Amplify A Signal
PlZ I want to ask if it is possible to amplify a signal ( amplitude modulated sine wave) with freq range (0.3 - 1 MHz) and amplitude ( 5 - 10 Volt) to become in the range of (0.5 - 5 KVolt) with output power in the range of ( 50 - 300 Watt) without affecting the freq or the shape of the signal . Can I use a power amplifier with a (...)
Professional Hardware and Electronics Design :: 21.03.2005 00:06 :: eng_maged :: Replies: 1 :: Views: 1139
Have some one know how to amplify signal from Microphone and filter frenquency of voice.
Professional Hardware and Electronics Design :: 17.01.2006 05:14 :: river78 :: Replies: 3 :: Views: 1430
I've a Transmitter, but the signal is weak. I need a Repeater to amplify the signal so that the Receiver is able to receive the signal. I don't have information how to build a Repeater, such a it circuitry. Kindly advise me this hardware circuit information. Thanks.
Electronic Elementary Questions :: 21.02.2005 21:53 :: WbTang :: Replies: 4 :: Views: 1247
when designing a gps receiver, a simple rule to decide the overall gain is to amplify the signal to the maximum range of the ADC. but i am wandering what determine the maximum range of the ADC. A paper mentioned the peak-to-peak value of a 1-bit adc is 100mv,what is the reason? if i design a 4-bit flash adc in 0.25um TSMC techology, what is the pro
Analog Circuit Design :: 30.03.2005 02:02 :: skyeaglemm :: Replies: 1 :: Views: 710
I am in need of help with my project i am using an analog ouput load cell and A/D converter ADC0804 and Atmel AT89C52 micon.
i can't seem to make the A/D work with the load cell output
how can i make it work or do i have to have the Bridge Transducer ADC for Load Cell as it is not available where i live
Has anyone worked on similar pro
Microcontrollers :: 13.07.2005 04:54 :: emmos :: Replies: 5 :: Views: 1907
i wanna amplify the output signal of my rca tv outputs so that it reaches another tv 25 meter away .
how can i proceed to get that stuff working . thanks
Hobby Circuits and Small Projects Problems :: 13.10.2005 09:26 :: hassenman :: Replies: 6 :: Views: 1687
This is my problem: I fed a signal between 0.4Volts to 0.6Volts to a 2N3906 Transistor. I could not switch on the amplifier. how would i deal with this?
The Frequency is 5MHz.
Analog Circuit Design :: 25.02.2006 04:19 :: lowell :: Replies: 8 :: Views: 722
I was wondering whether there is a way to amplify the frequency deviation of a frequency modulated signal.
For example, consider a FM signal that has only a small modulation index. Without demodulating the signal, or changing the modulation signal itself is there some sort if way to (...)
Analog Circuit Design :: 06.07.2006 05:07 :: svensl :: Replies: 4 :: Views: 1493
I would like to generate PWM signal using PSoC internal relaxation oscillator.
The analog resources of PSoC are capable of generating a saw-tooth and/or triangle wave relaxation oscillator. This triangle or saw-tooth wave is fed into a comparator. The other input of the comparator is fed by a differential amplifier. The diff-amp is
Microcontrollers :: 27.03.2007 04:07 :: niks :: Replies: 1 :: Views: 1672
But the op-amp I studied, like single stage OTA, cascaded, folded cascode, they only have the gain in range of 10-100 right?
So, how to get a such high gain of 1000?
Analog Circuit Design :: 24.04.2007 21:23 :: e_e :: Replies: 15 :: Views: 8513
Hello, my first post and a simple question I can't seem to find the answer elsewhere.
So I need to amplify an RF signal, but its power range from +15dBm to -120dBm
The system need to input a 2.5DC 1V p-p signal into the ADC for frequency analysis, but I'm not so sure how to amplify the (...)
Electronic Elementary Questions :: 01.09.2007 23:21 :: iewgnem :: Replies: 3 :: Views: 858
I want to build a very simple 1000 Hz Sine Wave generator with about 5 Volts RMS output.
And my question is:
1. What is the best way to build such a generator?
2. Are there any IC's that produce a simple sine wave?
3. how to amplify the signal to have about 1 Amp output current.
Analog Circuit Design :: 03.11.2007 06:44 :: tronoty :: Replies: 3 :: Views: 1148
i want to design a low noise preamplifier for a data sample collector.
and the signal from the sensor is very very samll,in order to prevent the usefull signal from swampped by the noise made by the circuit itself i need to design a low noise preamplifier circuit to amplify the signal.
so how (...)
Electronic Elementary Questions :: 11.11.2007 01:15 :: ZengLei :: Replies: 3 :: Views: 692
I would need to drive a mosfet driver which needs 15V PWM signal. however the microprocessor would provide 3.3V PWM supply.
Any idea how to amplify the signal.
Professional Hardware and Electronics Design :: 02.06.2009 07:45 :: indiantuktuk :: Replies: 2 :: Views: 3019
Don't use that NMOS one. It is nearly 1000 times bigger than you need! Also, the current will be controlled by Q2 which will need to be PMOS anyway.
NMOS and PMOS are simply being used as switches in your case. An NMOS will switch current to ground when you aplly a positive voltage to the gate (with respect to ground). A PMOS would normally
Analog Circuit Design :: 08.03.2010 07:51 :: keith1200rs :: Replies: 21 :: Views: 3245
I have a circuit that gives a PWM signal at 20Khz with maximum average voltage at 1.6v. I need to amplify and filter this signal to a variable DC voltage ranging from 0-5v or 0-10v.
I tried using a 741 op-amp and RC filter. It simulates perfectly in Multisim but practically gives a constant VCC at output all the time.
Can someone (...)
Analog Circuit Design :: 13.08.2010 07:41 :: gsg :: Replies: 1 :: Views: 1196
I doubt a pre-amp would solve your problem, the signal from card sound generators is usually too high, not too low.
Can you post a diagram of how you have it connected.
Hobby Circuits and Small Projects Problems :: 17.08.2010 14:21 :: betwixt :: Replies: 5 :: Views: 1992
i have rf transmitter and receiver module. the operation frequency is 433mhz..
it only work around 100m..
how can i amplified it to get better and longer distance??
how much longer distance?. These units are primarily designed to work over
short distances a few 10's of metres
Yes you could use, as suggested b4,
RF, Microwave, Antennas and Optics :: 19.08.2010 00:59 :: davenn :: Replies: 4 :: Views: 1350
Yes, the lower the parameters you mention, the better the performance. So, I think the INA333 if the best of these three. however, the best is not always available and cheap. In the end, it's a compromise.
Hobby Circuits and Small Projects Problems :: 30.12.2010 07:44 :: seadolphine2000 :: Replies: 8 :: Views: 982
In my search so far, I've come accross the following 3 technologies for sensing presence / absence of AC mains (220-240V) current.
1. Hall Effect sensors
2. Current Shunt sensors
3. Current Transformer sensors
My need is not to measure (as in metering/quantitative measurement), but only presence/absence of AC current, given whatever
Microcontrollers :: 27.02.2011 05:18 :: jayachar88 :: Replies: 15 :: Views: 2553
I want to interface B type thermocouple with pic microcontroller 16F877A, as i am new to thermocouples so please help me, how to interface it, if anyone can post the circuit, it will be useful for me. reference table link of B type thermocouple is
Robotics and Automatics Forum :: 18.04.2012 04:41 :: Saad_111 :: Replies: 10 :: Views: 1414
I have my comparator based capacitive sensor working.
As it is it gives me a differential output voltage of 0.1V to 0.5V roughly.
Presumably the output current is quite high because an LED is developing enough power to be visibly illuminated, though not at full illumination.
I would like to amplify that signal to provide a voltage differential
Hobby Circuits and Small Projects Problems :: 20.05.2013 08:36 :: boylesg :: Replies: 1 :: Views: 322
how about using drain/emitter series inductance? This changes the input match without adding any additional noise to the system.
RF, Microwave, Antennas and Optics :: 20.01.2003 12:42 :: toonafishy :: Replies: 14 :: Views: 1314
how to design a amplifier which could amplify signal with IF 70MHz, bandwidth 20MHz, input signal voltage level: -60dBm~7dBm(about 1uV~2.24mV),Dynamic Range>70dB, output signal level <5v for sampling by ADC,
it bothers me a lot,
could some fella provide me some advice...
Thx in advance.
Professional Hardware and Electronics Design :: 21.02.2003 10:48 :: goodguy1 :: Replies: 0 :: Views: 615
For week current (several uA), how to design a sense amp to sense it for low voltage(1.6V)? what about below 1uA range?
Any input is welcome. Thanks!
Analog Circuit Design :: 24.06.2004 06:46 :: jordan76 :: Replies: 10 :: Views: 1913
how to design an amplifier, working at 10K--10MHz, Vpp to 50Ohm is +/-30V? Anyone can give me some reference?
Analog Circuit Design :: 09.03.2005 08:21 :: yzriver :: Replies: 3 :: Views: 726
pls how Ican measure high alternating current by avr microcontroller atmeg8l
using current trasnsformer.
Microcontrollers :: 30.04.2005 15:48 :: sharif :: Replies: 8 :: Views: 2532
you know how much energy(dbm) the CATV is in endpoint(user side)?
2.If I amplify it and connect it to antenna, can I transfer the CATV signal(channels) by air and others can receive TV channels by air?
RF, Microwave, Antennas and Optics :: 23.06.2005 13:14 :: david753 :: Replies: 1 :: Views: 558
I am a fresh man in analog circuit. I want to kown how to choice ampify. please tell me something that must be noticed 。
Analog Circuit Design :: 11.09.2005 06:58 :: ymq8328 :: Replies: 5 :: Views: 926
can some one provide me materials or links of what is an error amplifier and how to design an error amplifier. how is an error amplifier different than a differential amplifier.
Thanx in advance
Analog Circuit Design :: 26.12.2005 00:23 :: Chethan :: Replies: 11 :: Views: 6114
do you know whitch pin of Q7 is SOURCE?
how you say Q7 is source follower?
In source follower GATE is input and SOURCE is output
Q6 is source follower, and Q7 is constant current source (Vbias=const) that bias source follower. Output of the source follower ia at the gate of Q9.
Just look the schematic.
Analog Circuit Design :: 02.03.2006 01:53 :: pixel :: Replies: 18 :: Views: 1072
Check out with the accelerometer's data sheet whether it requires a filter between its output and PIC's ADC input ..
In most cases you will need a LPF (low-pass filter) which will limit the band to whatever you require .. see example below ..
Also, in the accelerometer's data sheet you should find data on how many Volts per "g" it outputs ..
Microcontrollers :: 10.05.2006 23:45 :: IanP :: Replies: 3 :: Views: 1260
I need to design a high gain receiver that must be able to withstand (block) high voltage (350 V) pulses (the receiver must amplify the very small signals that follow this pulse).
Any idea on how to block the high voltage pulses in order to protect the receiver? Originaly I used a resistor and a pair of diodes, but the resistor (...)
RF, Microwave, Antennas and Optics :: 11.05.2006 14:47 :: cyberblak :: Replies: 5 :: Views: 777
I have to demodulate signal~
how to amplify Vo signal to the high voltage =5V, low-voltage =0V..
I have no experience for the design.
plz help me...
RF, Microwave, Antennas and Optics :: 17.07.2006 07:34 :: cyhuang056 :: Replies: 0 :: Views: 387
salam be dostan gerami
it can made by LM3524 or LM3525 IC
any circuit plz
Electronic Elementary Questions :: 06.08.2006 06:47 :: ehsanelahimirza :: Replies: 10 :: Views: 7689
i hav two weak signal at reciever end an i wana amplify an add both using npn or pnp transister hav nee optimal solution :)
Digital Signal Processing :: 08.08.2006 12:12 :: kawish :: Replies: 0 :: Views: 476
Any IA will have just 2 inputs. These inputs are differntial. There are many application notes on the internet that tells you how to connect ecg signal to IA.
From fast googling I get the following link
You could search more and fin
Analog Circuit Design :: 24.08.2006 15:09 :: haytham :: Replies: 3 :: Views: 1657
The port gives off eough voltage (the relay is rated at 5v, port output pins give of 5.something). The relay does not work; i dont think there is eough current.
Is it possible for me to tie multiple output pins together in some way to make the current higher while maintaining the same voltage level?
Would the parallel port itself have some so
PC Programming and Interfacing :: 07.11.2006 01:29 :: ajaykumar988 :: Replies: 7 :: Views: 1870
how can i amplify the ouput signal from the mic?
Hobby Circuits and Small Projects Problems :: 06.12.2006 12:07 :: hazemafify :: Replies: 3 :: Views: 1125
i had designed a slope detection circuit to detect voltage slope , it utilizes the formula i=C dv/dt , but the Capacitor will be very large if we wanna detect a small slope , but as we know , we can't build-in a large capacitor in IC, so, how to design it ?
Analog Circuit Design :: 09.03.2007 01:43 :: pianomania :: Replies: 6 :: Views: 1660
I want to apply voice to NBFM-TX ,I should amplify and filter it(300-3000HZ),but my problem it how to control the gain of system for larger MIC signals (prevent saturation or large signal to apply to VCO tune voltage) Is tehre any IC for this task? Is there any AGC IC for this(Automatic gain control of voice)
RF, Microwave, Antennas and Optics :: 18.10.2007 12:29 :: 7rots51 :: Replies: 0 :: Views: 405
I need to amplify a sin wave signal having 0.8V amplitude to 1 V. Who can help me ?
Analog Circuit Design :: 22.01.2008 03:06 :: master_picengineer :: Replies: 8 :: Views: 1077
i generate dtmf with micro controller(avr). how can i connect it to phone lines ..
please give schematices. thanks
Microcontrollers :: 11.02.2008 00:52 :: segmex :: Replies: 25 :: Views: 3530
how to build a simple white noise generator ?
i want to build a simple one ,so i can understand the white noise thoroughly.
any suggestions or circuitry?
Analog Circuit Design :: 25.03.2008 05:15 :: ZengLei :: Replies: 7 :: Views: 14185
The absolute easiest way to sum to signals togehter, if they are voltage signals, is to convert them to current. For example you can build a unity gain buffer that generates a Vsignal1/R current and another unity gain buffer and generate a current aVsignal2/R. Sum the two currents into the same size resistor and you have (...)
Analog Circuit Design :: 27.08.2008 21:44 :: liletian :: Replies: 6 :: Views: 1842
For load cell application offset zeroing is not essential since it will always have a manual Zeroing facility, which can be done in the microcontroller.
Better to say, not required in most applications but essential in some anyway. Consider a load cell mounted at a tank, how do you want to zero it after a power fail?
Microcontrollers :: 05.10.2008 05:48 :: FvM :: Replies: 9 :: Views: 5053
if i wanna add two dc signal , like 1.23v with 2.4v , which are generated from different block ? how to implement ? It seems that OP only amplify ac signal.
Analog Circuit Design :: 01.12.2008 01:50 :: pianomania :: Replies: 4 :: Views: 653
Can anyone tell me how to generate a voltage source from some data(no analysis equations), I attached the voltage source in the pic, any suggestions will be appreciated. Also, any suggestions on how to design an amplifier to amplify the pic DC signal, I want to get digital output out of the curve.
Analog Circuit Design :: 16.04.2009 10:54 :: Zander_ua :: Replies: 1 :: Views: 785
I want to design a buffer which will driving a transmission line (50 ohm),
and can amplify signal from 1-5 times.
The architecture is stardard noninverting amplifier using a opamp .
how to design the opamp , the output resistance of opamp must be less than
50 ohm ？
Thanks for help. Any refenrences of this kind of op is (...)
Analog IC Design and Layout :: 13.05.2009 08:46 :: wangkes9 :: Replies: 2 :: Views: 2931
I have a load cell sensor with 4 wire(red=+exc, black=-exc, green=+signal, white=-signal)
now i want to connect this sensor to rs232(serial port)
how can i so this.(I don't have any expirence in electronic)
Miscellaneous Engineering :: 14.08.2009 11:27 :: hm1984ir :: Replies: 2 :: Views: 5655