Questions tagged [input]
Something put into a system or expended in its operation to achieve output or a result
539 questions
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Universal PNP/NPN (2-wire / 3-wire, 5 – 24 V) isolated pulse-count front-end – sanity check
I’m about to freeze a little front-end that will live inside a loom monitor.
The same box may be plugged into very different textile machines, and I’m tired of keeping two versions of every board (one ...
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What are advantages of using input as differential bipolar instead of a single ended input?
There is a galvo driver's input as shown below:
The driver manual recommends dual bipolar -10 V to 10 V DAC analogue output channels (differential) as inputs to for the driver.
And it offers two ...
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Input supply voltage more negative than the negative power rail in an FDA/Op-amp
In the following configuration, let's assume V1=100mV and V2=-250mV (with respect to ground)?Here the negative power supply pin of the part is connected to ground. My question is - if either V1 or V2 ...
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PNP/NPN input circuit
At the moment, I manually plug in jumpers on an adapter board, depending on whether I have an NPN or PNP input (40 inputs). Now I would like to replace the jumper. However, I cannot provide an ...
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GPIO Input not working with STM32 Blue Pill
I am trying to take a digital input from pin B12 (PB12) to control the internal LED of the STM32 Blue Pill (STM32F103C8T6) board at pin C13 (PC13).
The B12 pin is set to High-Z mode.
Here's the ...
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How do you compare DC battery voltage to voltage output from DC motor? [closed]
What is the difference and similarities with applying dc battery voltage and applying DC motor output voltage to a circuit or a DC motor with the same voltage (the same voltage we don't care about in ...
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How to run LM5176 down to 2.5V input without extra supply?
The datasheet for the LM5176 says it can primarily operate with an input voltage between 4.2V and 55V. However, the datasheet also says it can operate down to 2.5V input voltage, but only if the BIAS ...
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How to protect a μc IO pin that might see voltage when μc is off but must read it when μc is on?
I have a small voltage source which I'm using as a detector for power in another circuit. It connects to a microcontroller pin. Sometimes it's active when the microcontroller is not powered up, but ...
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PIC32MZ not detecting when quadrature encoder is turned
My Problem
I'm trying to interface a quadrature encoder, this one, to a PIC32MZ. I made a simple test to check the functionality of the encoder, but I cannot get the Input Capture peripheral of the ...
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Problem about inputs (zones) of a security system [closed]
I have a couple of questions regarding home security control panels and PCB design that I hope someone can help me with.
First, I'm curious about the circuit and components used in the zones of a home ...
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How can I select one of two identical USB power sources while blocking out the other?
I am trying to design a keyboard with two USB-C inputs that connect to host. I decided on using a HD3SS6126 for switching logic.
HD3SS6126 datasheet.
I would like to make it so that when one of the ...
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171
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Confusion in deciding a voltage regulator's input output capacitor types
As a part of a PCB, I want to use this AMS1117-3.3 voltage regulator with 22uF input and output capacitors as follows:
As for the exact part for the capacitors, I was planning to use this X7R ...
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Circuit that offsets input voltage to exactly 0 V
I am looking for a (op amp) circuit to offset \$f(x)= \log(x)\$ always to zero. More comprehensible is the explanation on the x-y plot below.
Basically, it is possible to offset the voltage with an ...
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Bulletproof automotive drycontact input switch with constant current opto driver
Please comment on this circuit. I want to make sure a push button input SW? is as robust as possible before it goes into my processor after the U12A buffer.
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What happens if misconfigured input GPIO delivers 3.3V if it is connected to 3.3V to detect high?
Let's say I have GPIO0 on an ESP32 which is configured as input pin using an external 4.7K Ohm pull-down resistor to ground. Default state therefore is low. When I ...
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