Questions tagged [output]
A signal or power being generated by one system for consumption by another, or a connection for that purpose.
409
questions
-1
votes
1answer
69 views
9V and 12V adaptors - bad output [closed]
I have a couple 9V and 12V adapters ranging from 1A to 5A.
When I plug any one of them in, it produces accurate voltage but the current oscillates between 0A and anything upto maximum current and then ...
0
votes
2answers
57 views
Electric circuit which flips voltage
Is there an electric circuit which flips voltage? For instance if the input is Vi>0V then the output will be 0V and if the input is 0V then the output is >0V.
And i am not reffering to the NOT ...
1
vote
0answers
73 views
Why does customer see high voltage on my PNP sensor output?
I have designed a capacitive sensor with a PNP output. The output stage is a Sziklai pair, as follows:
simulate this circuit – Schematic created using CircuitLab
While the circuit works OK, one ...
0
votes
1answer
22 views
Linear electrical network
Is zero input zero output test of an electrical network is necessary and sufficient condition for network to be linear i.e for example if I have electrical network of N-port and I measure current and ...
0
votes
0answers
49 views
op amp - current source - voltage output
I have the electronic schematic bellow composed with two op amp and I want to determine the voltage output of the X2 op Amp.
I m a little bit confusing about the aim of using the zener diode D1 in ...
0
votes
1answer
47 views
How can I convert analog voltage to PWM converter just by changing the input voltage [duplicate]
Which is used to convert analog input signal to PWM output. How can I vary the output with the input? How I can vary duty cycle?
0
votes
1answer
21 views
Connecting loads to an MCP23S17 GPIO outputs
I would like to connect various MCP23S17 datasheet devices to the Raspberry Pi3 MB SPI port. But first I would like to start making some test with a single connection: only one chip. After this I will ...
1
vote
1answer
109 views
I can't get the desired output voltage
This is a simulation of a buck boost converter. I want to get -12V as the
output voltage , but I get -1.148V.
I checked the PWM and the duty cycle and it is right.
I think that my problem in ...
0
votes
1answer
46 views
Use one GPIO output to set two inputs to opposite states (low and high)
This is all still very new to me so apologies if this is a silly question.
I have two LDO voltage regulators, each of the ENable pins are different, to enable them one ENable pin must be LOW and the ...
1
vote
2answers
93 views
Calculating voltage output from a circuit with capacitors
The question is outlined in the image below. I am having trouble solving this problem. If at all possible would one of you please provide the solution. Thank you
0
votes
3answers
85 views
Can every logic ic output be connected directly to ground or Vcc in any case?
One day, someone here, I forgot who, wrote: "On modern ic's, every input and output pin can be connected directly to either ground or Vcc." Talking about ologic ic's.
Is it true? And is true all the ...
1
vote
2answers
160 views
step up converter
I built a circuit of boost converter and my input voltages, 6-9V. I want to get output at the converter
9-12V, my problem is that I get over 40V and I do not know why, in the code do I have to set ...
1
vote
3answers
65 views
How do I power many devices off of a low voltage microcontroller?
I'm new to electronics.
I have a GENIE 08 microcontroller, and I want to control multiple LEDs from one pin, and a few buzzers from another, and an LCD from one too.
I am worried that the power ...
0
votes
3answers
48 views
Reasons for constraining single-ended Op-Amp VCC when multiple power rails available
If I am utilising an op-amp, say a LM321/LM324, say in single-supply operation as a buffer and have a multiple suitable power rails available then are there, assuming I do not expect to utilise the ...
0
votes
1answer
46 views
Do I have to protect the CD4013 outputs from short circuits?
I'm trying to determine whether a CD4013BE ("CMOS Dual D-Type Flip Flop") can take damange if one of the outputs (Q or Q-bar) is set to high, but shortened to ground (or vice versa) with no resistor ...
2
votes
1answer
54 views
Amplitude influence in the output signal in inverting op-amp
I testing an inverting op amp circuit in LTspice.
First I observed the graphic for the gain, and calculted the bandwidth of the circuit that is 11995Hz.
Then I did a simulation at that frequency, and ...
1
vote
1answer
29 views
Is this the correct circuit for a Sourcing Digital Output
My objective is simple:
Let the user connect any reasonable voltage to SOURCE0 (3.3-48V) and get that voltage at OUTPUT0 when BACKUP0 goes high from my MCU (3.3V signal)
I've seen some examples ...
0
votes
1answer
34 views
LDO maximum output current during short circuit
I am using this IC - LIN Mini system basis chip - TJA1128
Using the LDO in that IC to generate 3.3V with 50mA of load current. I see that the maximum output current capability of the IC is 85mA.
...
1
vote
1answer
67 views
DC voltage at the output of push pull stage
I have an output stage. The circuit diagram is as shown:
In DC condition, the node X has a DC voltage of Vdd/2. The node Z has a voltage of about 1.26 volts. Vdd = 3.3 volts. Transistors M7 and M5 ...
0
votes
2answers
26 views
Output resistance of CE amplifier small signal model
I was studying input/output impedance of CE amplifier small signal model and I wanted to know why the output impedance (looking from the collector) is just Rc in parallel with dynamic output ...
1
vote
1answer
90 views
Is it dangerous to connect an IC output directly to GND?
Is it dangerous to connect an IC output directly to GND while there is a risk this output can be high?
BUF1 is the 74LVC2G125DC dual buffer. datasheet here. But my question could also apply more ...
-1
votes
2answers
31 views
Changing selection lines in a mutiplexer [closed]
We have a 4*1 multiplexer. So it will have two selection lines, AB.
Now what if we built the same multiplexer but with BA as selection lines.
Would the output change?
If it did how would it?
1
vote
3answers
143 views
SMPS Input/Output ripple current and ripple voltage
I found a presentation regarding SMPS and found this slide.
I am not totally able to grasp the concept of the input and output ripple current.
In the above image I have the following questions :
I ...
1
vote
1answer
52 views
How to generate desired voltage signal in a circuit?
What I am asking is a design or pulse shaping question.
We learn about analyzing circuits but not designing them in school.
Let's say I have an input signal which is a triangular wave and I want ...
0
votes
0answers
35 views
TPS54260 DC-DC Buck Regulator BOOT and PH pin voltage drop
I am using TPS54260 Buck converter which steps down 16V to 5V output.
Load current is 600mA max.
To the inrush current through the output inductor, I did some rework. But after some rework, my 5V ...
0
votes
2answers
96 views
How to make a sawtooth waveform look less like a staircase (DAC)?
I am making a 4-bit digital-analogue converter using an adder circuit with four inputs. Each input is a square wave of a specific frequency. The output of the DAC is meant to be a sawtooth waveform ...
0
votes
1answer
89 views
Capacitor on sensor output purpose
I'm currently using a demo-board from sparkfun for quick prototyping of a hall-effect sensor application. The specific chip I'm using is the ACS723-5AB, a Hall-Effect sensor that can measure between -...
0
votes
3answers
39 views
Output drop/change in linear circuits
Lets say I have a linear circuit with some input and output voltages. Assume this is a block with inputs/outputs. When I connect input of another block to the output of my first block, I observe that ...
1
vote
1answer
49 views
What is the output in Figure 3-19(a) if the input voltage is increased to a peak value of 20 v?
Will it be the same as if the input voltage is still 10 V? Or the zener diodes will breakdown (get damaged)?
1
vote
1answer
187 views
What is Hang Input in Logic Design?
When it comes in Digital Logic Design using IC (Integrated-Circuit) what is the term HANG Input means? what does it do? and how will it affect the output of the IC?
0
votes
1answer
47 views
Fourierspectrum of the output voltage of an real inverting amplifier
First a quick descripton of my circuit:
The inverting amplifier amplifies by 20dB, the input voltage is a sinus signal with the Frequency 10 kHz and the peak to peak voltage is 200mV or 10V. The used ...
3
votes
1answer
66 views
Using LED driver as PWM digital outputs
I'm building a robotics project where I need to control a lot of DC motors. I picked the DRV8870DDAR H-bridge motor driver chip which needs 2 PWM input signals to control the speed and direction. ...
2
votes
2answers
108 views
SN74HC595N Shift register output bizare
simulate this circuit – Schematic created using CircuitLab
I'm using an 8-bit shift register on a very basic application for learning purposes, I have three buttons connected to SER, RCLK & ...
0
votes
1answer
47 views
What would be the output voltage of the full wave rectifier output when center-tap is removed?
This is the circuit I have been analyzing.
My intention is to calculate the output voltage at the resistance RL when the center tap is removed.
With center tap connection, output voltage VRL(DC) ...
1
vote
1answer
71 views
Measuring Output Ripple Voltage
Please check the below waveform of my 5V output ripple of the buck converter.
I am measuring the output ripple across the output capacitor of the converter. Why are these spikes coming while ...
0
votes
0answers
75 views
Parallel Electrets - working BUT
I know this question is similar to the previous one, but it has a slight tweak.
I have 4 electret capsules in parallel supplied by 5V (USB supply).
They work fine (so I guess the current hasn't ...
0
votes
2answers
52 views
Group multiplexer
I've got a project on my Digital Electronics course and I'm stuck.
I've got five 7bit sources which I want to choose from by counter and multiplexer. But multiplexer has only one bit inputs and output ...
0
votes
0answers
197 views
Common Collector Amplifier - Explanation?
I am new into electronics, and I dont get it how we find input and output impedance of Common-Collector Amplifier. I mean, I dont know what we are looking at when we are trying to find input and ...
-1
votes
1answer
49 views
Can I use a simple fuse to protect a CMOS over current?
I'm designing an output with a MOSFET transistor to control loads such as relays, motors or incandescent lamps, similar to the outputs of a PLC.
Obviously, there is no problem as long as the load ...
0
votes
1answer
182 views
Circuit with two voltage dividers in parallel
I have the below circuit.
I'm solving for Vx. Vx is just Vout for another voltage divider. So, the top left R is R1 the bottom is R2. Therefore shouldn't Vx be R/3R (Vs) = 1/3 Vs?
But it's actually
0
votes
3answers
121 views
Output stage using 2 transistors
I want to understand how does this 2-transistor circuit work. It is used in a schematic for increasing the current rating at the discrete output stage. This does not look like a standard darlington ...
0
votes
0answers
55 views
Analog sensor output incorrect when sensor not connected
I created a simple circuit to measure an analogue photo detector output that has 3 pins (vcc, gnd, output).
I create a PCB by iron method to test it. But the problem is when the sensors are not ...
0
votes
2answers
73 views
With a SMPS charging a capacitor bank. What is the power rating of the SMPS?
I'm working on a project to build a 24VDC to 250VDC switch mode power supply for the purpose of charging a capacitor bank. The capacitor bank will be rated at 250V and 180mF. So, the prime power ...
0
votes
1answer
77 views
Output on Pass-transistor NAND gate lower than expected
I have an assignment to design an IC NAND gate, consisting og 2 NMOS-transistors and a designed inverter as seen in figure 1 and 2.
But when measuring the output at Vout, we only get about 60% of the ...
0
votes
1answer
37 views
Expected output of DFF_2 if DFF_1 has hold violation
I am trying to figure out the output of flop DFF_2 when
If DFF_1 has hold violation.
My answer - DFF_2(Q) = X
If DFF_2 has hold violation.
My answer - DFF_2(Q) = X
I understand the FF's go to meta-...
0
votes
2answers
56 views
Interconnect 5v - 3.3v
Is this correct to connect 5v outputs and 3.3v inputs ttl logic via an open drain transistor and an internal pull-up resistor on the digital input?
I suspect the 5v part can influence to the 3v part ...
0
votes
1answer
970 views
Seven Segment display VHDL code issue [closed]
i am trying to use a seven segment display to show the numbers 0 to 9, using BCD and the dip switch the FPGA Board includes to determine the High and Lows. I found some relevant code but, my FPGA has ...
1
vote
1answer
64 views
Is it possible to increase the current avalible without changing voltage on my DAC circuit?
I am using a Raspberry Pi and a Adafruit MCP4725 to control a mass flow controller, as well as powering the DAC, and I am meeting the bare minimum of current to control it with the Adafruit MCP4725. ...
0
votes
2answers
43 views
What is the output type of the 74AHC594?
What is the output type of the 74AHC594 IC?
I didn't find the answer in this datasheet. There is stated in some datasheets for the 74594 IC from other manufacturers that the output type is buffered. ...
0
votes
0answers
18 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=...
