Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [buffer]

A circuit or sub-circuit that as accurately as possible preserves the voltage characteristics of a signal while providing additional current. Typically used in situations where a circuit cannot drive the load that is presented to it.

A circuit or sub-circuit that as accurately as possible preserves the voltage characteristics of a signal while providing additional current. Typically used in situations where a circuit cannot drive the load that is presented to it.

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Is ping pong buffer the same thing as a double buffering?

In ping pong buffer we have two buffers, when one is being written by upstream component, the other is being read by the downstream component. When writing into one buffer is completed, the downstream component will switch to reading that as the…
quantum231
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How to find Setup time and hold time for D flip flop?

I am simulating D flip flop in cadence, how to find set up and hold time in d FF? And I have design negative D FF using Pass gate and Inverter when i change same circuit to positive D FF by changing ck to invClk and invclk to clk. invclk=not(clk)
user28719
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Buffer circuit explanation

I just saw this question and was wondering how this circuit actually works, since I couldn't really figure it out, I though about asking it. This is the circuit I am talking about: Lets label transistors from left to right as: Q1, Q2, Q3, Q4. I…
Golaž
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Extra Current because of Unity Gain Buffer Amplifier?

i was reading on the unity buffer amplifier. I did understand, that it can help provide extra current that source might not be able to provide. But where does this current come from? Is it from the External power supply to the opamp? If Yes, does…
Sherby
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Symbols on 40244 in circuit diagram

Hello and thanks for taking your time to help. On the picture below you can see the 40244 that I have issues with. While it is clear to me what most symbols mean, I am confused about the "20".Some insight on it would be great. (hopefully it is not…
Pseudoflask
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Need for Buffering Signals ?

What is the need for Buffering signals ? Is it to provide the ability for the source or circuit to be able to provide high current amount ? The buffer I was reading was the Op Amp unity gain amplifier.
Dallas Carter
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Buffer stages for driving capacitive load

How to calculate the number of (CMOS inverter) buffer stages to drive capacitive load? In my case, I am driving a 1nF capacitive load with CMOS (inverter) buffer with the digital signal having an amplitude of 0-5V, and 1Mhz frequency. rise time is…
Bam_Khel
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Why do you use a buffer when the whole point of op amp is to amplify signal?

This might sound like a dumb question but I just learned about buffers and learned that they have same Vin and Vout from the amplifier providing nearly identical Voltage source value to the next op amp or sensor. But I don't understand why we use…
CuriousJ
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Difference between tri-state buffer and inverting tri-state buffer

Is there any significant architectural difference between non-inverting and inverting tri-state buffers? In what cases would it be advantageous to use one over the other? To me they seem like the same thing just differing by an inverter.
Jihoon
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Design 8X1 MUX with enable using three state buffers and any logic blocks you need

I have no idea where to start. I know how to create a MUX but how can I create it using three state buffers ?
M9501
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Circuit for controlled buffer

I designed a circuit that requires buffers with the control gate (not like the ic's that have the control that will make every buffer turn on or off) . I am wondering how this works, and how it can be implemented with common npn transistors. Is the…
skyler
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Help for a 5V to 15V level shifter

I'm using FPGA DE2 board cyclone II from altera (for PWM generation) to control a DC chopper via ARCAL 2108 driver ;The problem is that the FPGA GPIO output gives a 3.3V but the driver is +15V input . I used a buffer IC (CD4009 ) to shift the…
Zak Mit
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74HCT245 buffer IC

In 74HCT245 bidirectional buffer IC, 3rd state is high impedance state as shown below. Link for datasheet: http://www.nxp.com/documents/data_sheet/74HC_HCT245.pdf If we want 3rd state as "Latch" ( to hold previous value ), Is there any option ( IC…
Techknowlogic
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Buffer amplifier used in medical implant hearing aids

I am new here, so if I am posting in the wrong area, please let me know. Recently at the university I've had a guest lecturer, that works at Cochlear developing medical implant for the hearing impaired. This guest lecturer mentioned and drew an…
flabbergastt
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Buffer works for signal from function generator, but not guitar signal

I am trying to create a buffer for a project I am working on. I found this schematic on line and built it. When I input a guitar signal the output equals V+ rather than giving the signal at the opposite side. It works as expected with a signal from…
Daniel Valentine
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