All Questions
Tagged with dual-supply operational-amplifier
16
questions
4
votes
2
answers
487
views
How is it possible to supply an LM833D with +12V and -8V supply?
I was studying a Philips CDR-765 circuit when I came across an output driver circuit consisting of an LM833 opamp supplied with -8VDC on the 4th pin and +12VDC on the 8th pin.
This is the first time I ...
- 43
4
votes
4
answers
307
views
Single supply positive-only signal amplification using INA126 (two op-amp in-amp)
I need to amplify a 0.15-0.8 V very low frequency signal to the 0-10 V range of an ADC. I'm having a hard time figuring out why an INA126 does work as expected with dual supply but seems not to work ...
- 153
0
votes
0
answers
59
views
How can I sum the output of the two opamps and multiply the voltage swing to +2vcc and -vcc
I have a VtoI circuit that you can see in the figure below. According to this circuit, I can receive a maximum sin current of 4 mA with a maximum load of 5 kΩ. Considering that the supply voltage for ...
- 1
0
votes
0
answers
35
views
Is this PSU configuration correct for dual power rails and a virtual ground?
I am pretty new to electronics, and I am just not understanding if I have the right configuration on my Tektronix PS2502g PSU. I am trying to supply voltage to a LM741 op-amp but do not appear to be ...
- 111
0
votes
3
answers
302
views
Split supply from 24V power supply using uA741 opamp
I want to connect a 0-3V analog sensor output to the 0-10V analog input of a PLC.
In order to avoid losing resolution, I have amplified the sensor signal using a non-inverting amplifier circuit (based ...
- 407
2
votes
2
answers
139
views
Converting AGC Schematic from Single Sided to Dual Sided Supply
I am working with the attached circuit, sourced from here: Original
This circuit is designed for a single sided power supply and has worked very well for me in the past. For a new project, I would ...
- 45
1
vote
1
answer
92
views
Do dual supply voltage buffers with dual outputs exist?
I need a dual voltage supply (+-15V) voltage buffer for my design. This component will receive a signal (varying from -10 to 10V) and transmit it with gain=1 (line driver, voltage buffer or voltage ...
- 33
0
votes
2
answers
44
views
Would not this buffer reduce signal resolution for sensor driver? (recommended schematic)
I am following this design.
For my application, the LVDT driver would give me a +-10 V output.
Analog Devices recommeds a buffer for clearing the output signal of the driver. The thing is that they ...
3
votes
1
answer
2k
views
Op-amp dual supply methods
To power an op-amp with a dual supply (+Vcc and -Vcc) you can use two power supplies connected in series.
I would like to find an alternative and less expensive way to do this as (in my project) the ...
- 73
0
votes
2
answers
158
views
What is wrong with this dual supply op-amp cascade circuit?
At the input I have a rectangle signal, R1 and R2 are 1 kΩ and 220 kΩ on the first cascade and second cascade (amplification factor 220). At the output I have zero.
Need I something like this on the ...
3
votes
4
answers
1k
views
Output signal distortion from op-amp
I am currently using a TLE2144, and the input signal of 600 kHz, 4.5 Vpp is generated from a function generator.
Using a voltage follower with TLE2144, I was able to get an output of 4.5 Vpp with an ...
- 195
0
votes
2
answers
198
views
Voltage follower for signal generator ground issue?
I'm trying to amplify the signal from a signal generator to get a high frequency AC current in a resistor. My circuit is below. However whatever voltage I put on the signal, the output seems to be ~3....
- 253
0
votes
5
answers
4k
views
How can I produce dual +-12V supply rails from a single 12V supply?
I designed transmitter and receiver circuitry, with LT1214CN op amps with +-12V rails, and now realized I'm limited to using a 12V external supply (I was asked to use it). I've considered possibly ...
- 67
3
votes
3
answers
1k
views
Best way to get stable +-9 volts AND 5 volt from a 9V DC source
I'm quite new in electronics, but I'm not scared to try it (Look Mum No Computer). So please bear with me and tell how to improve my asking.
I am building a guitar pedal. It's a op-amp based parallel ...
- 73
0
votes
2
answers
252
views
opamp with single power supply
I'm trying to build a 'panner' to mix two audio signals, basically a dry/wet potentiometer for an audio effect.
It works as intended when I use a dual power supply like this:
But stops working when I ...
- 160