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32 Threads found on edaboard.com: tl072
Most important assumptions for that project was to eliminate sound noises, and noises from cell phone. I had un useful ( because of low quality) PC speakers, and I decided to rebuilt them. I choose tl072 it was good choice for preamplifier. Amplifier played well but I wanted more power , that’s why I put 2xTL084 from broken cd rom. I used apl
Hi everyone. I am quiet new and I want to design amplifier for my project. I have sinusoidal signal with amplitude of 2.4V(P-P) and i want to amplify it to 12V(P-P). Power supply I used is +12 and -12 volt for tl072 Ic. How can I amplify it and does the power supply has effect on the output voltage. Please help me. Regards Arash
Check NE5532/4, tl072 App. Notes.
:( I've built a small preamplifier from tl072 using the schematic from this page: put it between the mp3 player and the car head unit, i set it to 4x amplification with the resistors but i didn't hear anything, except the no
As far as I remember the MC33182 is like the TL082 from TI but with a bit less noise. The MC33172 series can be foud at hxxp:\ and it is compatible with tl072 series. I don't know your requirements and where it is used in your application but the TL082 are standard components. Further more the GBDSO does not sound like a high
Do you have PCB from Rod Elliot or you have done it yourself? I have build 3 of this Preamp + Amp on my boards and they work all OK. What OP Amp do you use? If you use the OPA2134 you must put 10uF + 100nF from each power pins to ground nearest possible to op-amp and also 10uF + 100nF between + and - power pin directly on op-amp. I preferd the TL07
From what I can find the spectrum analyzer module is the (A11) module I have some rough notes that the sweep in is on U17(MC34072) may be same as tl072 which is also the LPF on the block diagram. You should see a sawtooth sweep signal on this opamp in/out. Sweep out is on U10(MC34072) Here you should see a variable amplitude sawtooth as you v
For distortion pedal, you can use a generic dual op-amp like lm358, 1458 or tl082. If you want low noise, use a tl072. Generally, a guitard pedal is powered with a 9v battery and a rail to rail op-amp is a good choice. Bye.
If the schematic is correct, there must be a DC offset at the said 200 mV input, otherwise the output would be 0V DC and about 0.6 mV AC. The resistors have rather high level, but the tl072 input current is in the pA range and can handle it. As you apparently expected a different result, you should recalculate the amplifier dimensioning.
Very easy to do with a dual op amp like the LM353 or tl072. Input to first amp connected as a unity gain inverter. Output will be -V. Same input connected to the second amp configured as unity gain, non-inverting buffer. Its outpuit will be +V. Input impedance can be selected by the value of the input resistor to the first op amp. [color=blac
Use a Sallen and Key second order highpass filter to cut rumble and hum followed by a Sallen and Key second order lowpass filter to cut hiss. Use a better opamp like a TL071 single, tl072 dual or TL074 quad. They are low noise, have a wide bandwidth and cost the same as a lousy old 741 opamp. The lousy old 741 opamp should curl up and die. T
Hi, I really need some help/suggestions. I am trying to construct a standard Multiple feedback active filter (MFB). I have used the forumlas, purchased several programs, used online calculators, to come up with the values to make an MFB bandpass filter. The latest attempt today I used an online calculator to get the resistor and capacitor value
Hi, Having tl072 high pass filter. But I want more crystal clear quality so decided to replace with 5532. May I do it without modifying the circuit?? Is it give good result?? or any other suitable and hi-fi chip available?? thx
Assumptions: Stereo amplifier with good bass but with possibility to quite good play in rest of range. I decided to use double bridge TDA7294. Power amps is dual-mono construction, close in one casing. System start with two soft
The tl072 opamp will not work properly with a 5V supply. You should use a rail to rail opamp instead. You are wasting many I/O pins driving transistors. You can use one port to load a register (five in your case) and a few logic pins to controll (chip select them). This will give some additional I/O pins. Also (as posted above) using a resistive di
The second IC is an inverting opamp with a gain of about 100,000 because it is missing an input resistor. So of course it is noisy. It is also shorting the output of the first opamp. Why would anybody use a lousy old LM358 for a mic preamp instead of using a low noise audio dual opamp like a tl072?
My teacher require me use op-amp audio is located from ~ 200Hz to 14oooHz (if you need to calculate band pass filter for five band with op-amp you can use LF356 (MOSFET input) or tl072 and one for bass (TL071) with band pass filter between 200 -400Hz hope this help you..
Hi folks. Sorry, BUt How can I change the default values for th voltages of a Chip? For instance I am using a tl072 OP-AMP in Proteus but The default voltage for it seem to be 5V even when I connect the higher voltages to pins #8 and 4 of the said chip. Or for some other chips There in no voltage pin connected to the chip so that I could c
The measured power of the tip: 2x350W with 8 ohms resistance Transformers: 1.5kW with 2x60VAC Main filtration: 12x6800uF on 100V Tips: 5 pairs of irfp240/9240 Cooling: tunneling on each channel [
Hey Dude! Hi You can use AD620 (it is an instrumentation opamp) or tl072 or tl074 as well as. Best regards Goldsmith
The overall concept An amplifier of small size and power of 50-100W was the aim of this project. Well known system LM3886 was used for this purpose because it is cheap and simple to make. Another reason why LM3886 was ch
I have technical help how calculated OP Amplifier Resistors R1, R3, R4 & R5 for following known value: R2 = PT1000 R2min = 822 Ohm (-20C) R2max = 1758 Ohm (+200C). Vcc= +10 V for LTC271CP Vref= +5.0V R1 = ???? R3 = ???? R4 = ???? R5 = ???? Vout = 0 - 5V (Vout = ADC ATMEGA16 or 10,14,16-bit external ADC on yours suggestion.) IC1 =
Both transmitter and receiver can operate from the same or separate power supplies. When you separate both units, as their RF circuits are farther from each other, they must be tuned to the same frequency and possibly use a short (quarter-wave) antenna each, to properly transmit at 434 MHz. For adjustments I would suggest to use an audio amplifier
Thank youfor the thread, Keith. What frequency of approximate sinewave does this circuit generate? What amplifier do I need? Thanks. The values shown give 15kHz. The opamp used there is the tl072 but others could be used. Keith.
of that satellite receiver for receiving weather maps from NOAA satellites was inspired by a project described here: LINK . The only change was that the PCB was designed and few elements were replaced with other (tl072, filt
Hi every one. How can I convert balanced audio signal to unbalanced signal with simple op-amp like tl072? I search a lot and I tested 2 circuit samples but non of them was acceptable. the balanced input is for example 12volt(P-P) but at the output I have 20volt(p-p). Please let me know if you have a good solution for converting balanced to unbalan
I think tl072 is only intended to be used with symmetric power supply Typical input voltage (common mode) range starts about 3V above negative supply, but tl072 doesn't show gain reversal, I think. Your schematic also shows inverted supply voltages, which would reliably fry the device.
When probing pin 1 of the tl072 I can only hear a high pitched noise, I think the problem is coming from there. These may be parasitic oscillations. It is a typical problem when operating an op amp at high gain. There are a number of things to try in order to eliminate them. Connecting a resistor or capacitor at various points ar
Dear Forum, I could imagine that this question is hard to answer "correct", since there are as many tastes as possibilities... I just finished renovating a rather nice Semi-Pro mixing-desk at home (A&H GS3). It has a nice 3-band EQ (MF+LF are sweeping). I replaced all the original EQ-ICs to newer ones. It had the typical tl072 Op-Amp, and
The threshold voltage of a Mosfet is when it is almost turned off (0.25mA), not when it is turned on. When BJTs are used as emitter-followers at the output then they have no voltage gain so the circuit is stable. You show a TL082. Why not use an tl072 dual audio opamp instead that is a TL082 selected for low noise? It costs the same.
LM358 is quite noisy, but if the microphone provides enough signal (>10 mV) it might be adequate. TL071 / tl072 are much better opamps, but need a higher voltage supply, like 12 V and the output should be capacitively coupled to the ADC pin, and the pin biased to VCC/2 with resistors. The problem with the schematic you posted is the low input i
An LM2904 is very old with poor specs so it is CHEAP. But is has a much wider temperature range than the LM358 which is the same dual opamp for a narrow temperature range (and is even cheaper). A tl072 is an inexpensive low noise wide bandwidth audio dual opamp that I use frequently. It is available as a single opamp (TL071) and as a quad (TL074).