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.
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Buffering Arduino SPI bus using 74AHCT125
My SPI bus has 2 slaves, one is 5V tolerant and is connected normally to the bus, however the second one is only 3V3 tolerant and so I have to level shift it. I have decided to use the 74AHCT125 ...
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Driving 32 SiC MOSFET gate drivers with one function generator trigger signal
I have been having a hard time finding out how to drive 32 gate drivers for SiC MOSFETs from a single function generator signal of 5 V.
My function generator is a Keysight 33500B. I'm using Genesic ...
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Feed output of oscillator to a 50 ohm load
I have a 30 MHz colpitts oscillator whose output I want to feed into a 50 ohm input impedance amplifier. When I try to simulate it the oscillator works fine by itself, however when I connect a 50 ohm ...
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Unity Gain Amplifier Purpose
In layman terms, what is the main use and purpose of unity gain amplifiers? I am reading that it is used to "buffer high impedance sources" but I'm unsure what this means practically.
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Problem implementing a voltage divider with a buffer amplifier
I'm currently working on a project where I need to implement a voltage divider followed by a buffer amplifier to scale down a voltage signal by a factor of ~10. However, I'm encountering some issues ...
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Should I use an op-amp buffer so I'm not affecting the original source's current requirements?
I'm attempting to modify an existing product (a dance stage similar to Dance Dance Revolution) where the panel signal is held high (5V) and when it is pressed it pulls the signal low (0V.) Only High (...
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What kind of BJT buffer should I use to connect a speaker to an STM32?
I'm trying to connect a speaker to an STM32. The purpose is to create sound using the DAC. The speaker I'm talking about is 0.5 W and 8 Ω. Tell me if I'm right: based on this the current will be 0.15 ...
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Will voltage at the inputs/outputs destroy an unpowered opamp?
I have a circuit powered by 12V that accepts an input signal of 0V to 10V. The circuit shall act as a buffer to the signal, with an added LED indicator. In certain circumstances, the circuit itself ...
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3.3V to 5V driver (push-pull) output too low
I was recently testing using SN74LVC1G17DCKR and was having trouble getting the output voltage to reach close to Vcc as per the datasheet. Vcc input is 5 V. My input was 3.27 V and I was getting ...
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Sine wave CMOS buffer from inverters with or without feedback
Is it possible to buffer a sine wave using inverters alone or with some kind of feedback?
I've been browsing google for minimalistic (I'm in 3.3-12 V domain) sine wave buffers and this thought stuck ...
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Reading potentiometer with analog multiplexer and ADC: how to buffer
I'm building a MIDI controller with a bunch of endless potentiometers. They can be either 10k or 20k. I'm planning to read the values with an ADS7953. This is a 16-channel ADC. It has one converter ...
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High voltage pad buffer design with 2nF load and ringing on first stage output
I am trying to design a high voltage (12V) buffer that will drive a sine wave with rail-to-rail peak-to-peak amplitude and a big capacitive load, maybe 3nF.
Browsing I came upon this Master's project: ...
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What is the difference between a tristate buffer and a transmission gate?
Functionally, these two "blocks" seem to do the same thing: send input to output if enabled and present high impedance Z on the output if not. However, this answer seems to suggest a ...
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Are these switches really necessary?
I'm analyzing the OpenBCI Ganglion board and I reasoned that switches SW1 through SW4 (part number CJS1200) might in fact be useless.
The negative input for each channel (X_IN-) is connected via a ...
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How to scale a GPIO control line to mitigate system impedance
I'm trying to build a circuit for a GPIO control line.
Each device tapped into the line operates at 1.80v; the line is held at 1.65v HIGH.
The GPIO output pulse profile is 1.000s @ HIGH 1.65v + 40ns @ ...
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