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Questions tagged [output]

A signal or power being generated by one system for consumption by another, or a connection for that purpose.

35 questions with no upvoted or accepted answers
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2
votes
0answers
77 views

Is a 90V output spike normal for a 45V buck boost converter?

The LT5176 buck boost converter outputs a short 90-91 volt spike at at the output in the 2nd second after startup, applying power to Vin. Schematic More details at Why does this buck boost with ...
2
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1answer
277 views

SMPS output noise: Why is it amplified further away from the output capacitor?

Well this is just a general question about switch mode power supplies, but i have recently built a buck converter, and read that it is very important where in the circuit you place your probes, to ...
1
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0answers
61 views

Increasing output current from ZVS driver

I bought the ZVS driver as shown in the picture below: After connecting a flyback transformer, I tried measuring the voltage and current at the output. The open circuit voltage is about 12KV. To ...
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1answer
185 views

PCM5102A: analog output level not what I expected?

I cannot achieve a 2.1 Vrms mentioned in their datasheet (pages 4 and 9). I can only output 1.04Vrms from the 1kHz source. Do I measure it wrong or this is what I should expect? Or maybe I get such ...
1
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1answer
289 views

Common audio signal voltage range on Line out connector

What is typical audio signal voltage range on Line out connector of consumer electronic devices? (Vmin/Vmax) I need specify Input voltage range to calculate op-amp. ...
1
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0answers
128 views

Is there any reason some pins don't not work as GPIO on ATmega?

I got an ATmega8515 and this simple code inside main(): void main(void) { DDRD = 0xFF; PORTD = 0xFF; while(1){} } I expect to see all the pins high, ...
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0answers
135 views

Power supply unit with two negative and positive outputs

So I am trying to add a power supply unit, which takes one input and supposed to provide one output: IN: 85-265V AC OUT:12V DC; 25A (max output power 300W) However, when I look at it, it clearly ...
1
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1answer
246 views

Combine 1 connector for in and output

To simplify the outside design as much as possible (keeping it simple to use and less expensive) I would like to use just one small 2-pin connector both as output to drive an external led and as 5V ...
1
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0answers
77 views

P-Ch high side switch output drop?

I am making a cutoff switch for a SLA battery using the this circuit V2 is the SLA battery, V5 is 0V or 5V coming from a some other logic circuitry. The simulation comes out fine. I understand that ...
1
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0answers
163 views

continuous DC voltage across output pin of an IC (DAC output)

I would like to ask you one question. Actually in the automotive there is chance of 20v or 5v continues output come across output of my IC (PGA400)i.e output of DAC. I would like to know in general ...
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0answers
98 views

arduino output pins collapsing voltage - is it dead?

After a while i came back to my arduino UNO R3, and attempted most simple program, that sets digital output pin high. I measured voltage over that pin, and got 5 volts, but when I connected an LED, ...
1
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1answer
576 views

MOSFET - shorting the gate and source

I am currently in the fourth year of my bachelor's degree and my knowledge on this is really really really very limited, but i got a simulation circuit of an isolated dc-dc converter from my senior ...
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0answers
41 views

Television output voltage at the headphone jack

The 3.5 mm headphone jack on an old tv is putting out 49 volts. This would seem too high. I am trying to fault find why my son received a shock from an amplifier body when he switched it on to play a ...
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0answers
29 views

capacitive displacement sensor calculation

while studying this certain types of problems with capacitive displacement sensors I came across one in particular that I am pretty much stuck. The whole problem is explained in following text and ...
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0answers
14 views

Connecting balanced output with unbalaned input using adaptor

I want to connect my audio interface (balanced TRS jack output) with guitar pedal (unbalanced TS jack input) and I wonder if this kind of adapter will work: https://www.amazon.com/dp/B001JYSMV0/ref=...
0
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1answer
45 views

Connecting balanced low impedance output with unbalanced high impedance input

I want to send the signal form my audio interface to the guitar pedal effect. I'll use interface's line out balanced output and plan to plug it in to the effect pedal which has high impedance ...
0
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1answer
64 views

ESD protection diodes on audio inputs / outputs?

I'm building a digital audio device with 1/4" stereo in and outputs that connect to a CS4272 codec. I'm wondering if and where I should place esd protection diodes. Pictured below is the analog part ...
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0answers
61 views

Power Supply - 2x output cables, joined at common rail

I have a 24V 25A power supply providing the juice to my 3D printer but it's a cheap LED driver and it's noisy - it's just the fan but as it's at home it's annoying. I'm looking to replace it with ...
0
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2answers
43 views

Load Cell Amplifier

I'm not from an electrical background and looking for possible options to amplify the load cell output. I'm using the following loadcell with a 2 mV/V output. http://www.sentranllc.com/pub/...
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0answers
49 views

Convert wet relay contact output to dry

I have a PCB which has output : GND and OUTPUT1. The contact is normally open, but when it closes it has voltage output of 4V and also closes the contact when checking on a multimeter. I want to ...
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0answers
37 views

Implementation of complementary filter and output of sensor while stationary

The code for a complementary filtered angle is not outputting the expected angle. I can get close to 90° using arctan formula from the accelerometer sensor data. Whereas, the complementary filter ...
0
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1answer
61 views

Produce and amplify analog signal with microcontroller (For PLC)

Overview I need to create an analog voltage of 0V-10V for the PLC with a microcontroller with operating voltage 5V. Approach I've been doing this research since last week. I'll share the results of ...
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0answers
27 views

What is the effect of the signals in output terminal?

I'm using superposition to solve this problem. I already know that for U1 the output is Ua1=-R/R. Unfortunately I'm not sure what is the output for U2 and U3.
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0answers
50 views

PLC Relay Output Circuit

Can someone help with this question? I've answered it to the best of my knowledge based on the learning materials provided but the answers I've gotten are exactly the same as the example. Should 5v be ...
0
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1answer
123 views

Electrical isolation in PLC output cards

Every output card spec sheet I read says something about electrical isolation. One I read recently said "Isolated 1500VDC channel to channel". What does isolation mean and what advantages do isolated ...
0
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0answers
42 views

Op Amp Output Current Requirements

Suppose I have a circuit like the one below. In simulation, at the point of maximum current draw, I measure the current through R1 to be ~-10mA, R18 to be ~28mA, R19 to be ~28mA, R3 to be ~-25mA, and ...
0
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1answer
52 views

Relay output issues

I am currently working on a project and to that end, i need to switch a 50VAC, 6-7 micro amp input across two outputs with a delay.I used a relay module connected to an arduino to do so. I intended ...
0
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0answers
143 views

Diode populated keyboard matrix: Wire two separate buttons to the same output?

I have an encoder board for a 16x8 row/column switch matrix. An absolute beginner to electronics but using all of the great online resources for research the best I can. However, occasionally it turns ...
0
votes
2answers
269 views

DC-DC converter and trim resistor

I'm using this DC-DC converter +/-5V output version and I decided to use the trim up setting to get as close to 5.5V as possible. I determined the resistor value using this formula And got around 3....
0
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3answers
160 views

Can I use an RC network somehow to allow reading of initial values from jumpers into a micro controller?

I completed a microcontroller project but I want to add a feature where when it starts up, it can read a 4-bit value defined by on-board jumpers (jumper closed = logic low, jumper open = logic high ...
0
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0answers
428 views

Can't get GPIOH pins to work as output on STM32F4 Discovery

I'm using 4 LEDs connected to different pins on STM32F4 Discovery: PA6, PD8, PH0, PD1. All of these pins have been configured as output with same function: ...
-1
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1answer
331 views

Error: illegal Verilog output port specification

I am having problems with my verilog test bench. Every time I try to run it, I get the error in the title above for my four switch registers. I have searched this question numerous times but I cannot ...
-2
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1answer
292 views

Using LTSpice to find the gain of NPN-PMOS folded cascode

I am trying to use LTSpice to find the gain of NPN-PMOS folded cascode. Below is the question prompt: In the problem, the parameter specifications are as follows: \begin{equation} \beta =100,\:V_A=5V\...
-2
votes
1answer
69 views

Selectively outputting 2 inputs based on a third input

I currently have 2 inputs that can be on or off, they could be 00, 01, 10, or 11. I want to output them only if a third input is active. I figured BJT transistors would do the job, but they seem ...
-4
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2answers
728 views

LM317 output voltage to 0 V with transformerless negative voltage created through a buck converter

I try to construct a shut down pin or a feature which can set the output of LM317 or LM78XX with negative voltage that is created through a transformerless buck converter. A buck converter having ...