Questions tagged [output]

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

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30 views

Question about the methodology of calculating the output resistance of a BJT amplifier

I am trying to analyze the following BJT amplifier. When it comes to calculating the output resistance, the instructor's solution simply says "It's Rout=Rc", possibly assuming that by ...
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26 views

Increase Current

Suppose i have a resistor 0.2ohm 5watt in a circuit and obtaining 750ma current across resistor and constant voltage. which value of resistor should i use to get get 1500ma current. Voltage is ...
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1answer
26 views

Different output for recliner power supply safe to use 25V 2.5A to a 29V 2A [duplicate]

My father broke his power supply for his recliner. He's on oxygen 24/7 and I was trying to find out if it was safe to use a slightly different power supply cause I can't find an exact match. The one ...
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38 views

How to calculate laser power on photodiode?

I am completely lost calculating the power of a laser diode and hope, that someone could help me. Here is my setup: OSRAM PL 520 (Type B1 = 50mW) Green Laser Diode OSRAM SFH 203 Photodiode The laser ...
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20 views

Buck Converter Feedback path

I have this buck converter - TPS54260 I was doing this Control Loop Stability test. For this test, we need to place a small 5-10ohm resistor on the resistor divided feedback path of converter Keysight ...
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1answer
46 views

How to opto isloate a pin and still use it as either an output or input at will

I am looking for a clever way to merge the two circuits. I want the freedom to configure the pin as input or output but still have the isolation. Not sure if this can even be done but I am for ...
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3answers
221 views

Flash ADC's nonlinear output and response

I don't understand this paragraph about flash ADC. A flash converter can produce a non-linear output which is an additional advantage. The voltage divider network consists of equal-value resistors ...
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2answers
63 views

2 dc-dc converters in series? [closed]

I have 2 of theses converters. I am trying to get 48v. Can I connect the outputs in series to achieve this?
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21 views

How to setup STM32F103C8 encoder triggered output signal

I have a project where I need to read the encoder phase A&B to output the pulse so I can drive a motor, I did some research and saw this picture where it is exactly what I wanted to do: output a ...
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28 views

Determining sample rate / bandwidth for a gyroscope with no ODR setting

My understanding is that a sensor's bandwidth should be half it's ODR (the rate at which you sample data). I am working with the BNO055 sensor and trying to get angular velocity from it, which will be ...
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2answers
67 views

Find an amplifier voltage output to match my subwoofer rating [closed]

I have two amplifiers with a subwoofer connected to each one and I was wondering how to check what the output wattage to make sure I don't blow my subs. Since they are two exact same pairs, I'll just ...
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76 views

Keyboard USB transform

I want to press a key on my keyboard, for example "a" and a device should take the scan code of the button I pressed and transform it to something else: e.g. "b" or the scan code ...
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1answer
33 views

LE33CZ LDO 3.3V regulator output issue

I'm trying to understand why with this very easy schematic, I got with my multimeter: 5.2V between the 5V pin of the USB breakout and GND: OK 0V between the GND of the LDO and the GND of the USB ...
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2answers
57 views

How is the output voltage adjusted on this schematic?

This is a schematic of TI's reference design for a 65-W USB Type-C high density active clamp flyback with GaN (PMP21639), which can be found from this reference design page. The page claims that the ...
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1answer
61 views

Output impedance of a voltage divider with DC bias

I made a circuit simulation of a 200VAC to 0-2VDC for ADC conversion via voltage divider and DC bias with a third resistor connected to a 3.3V supply. What is the output impedance of the divider and ...
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53 views

What will be the output voltage graph of the following circuit if output voltage is considered across the resister?

The circuit is given below. I know that until the Vin reaches the first peak, the voltage across R (output voltage) will be 0 since capacitors draw current to charge. After that, I couldn't figure it ...
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1answer
52 views

Designing a circuit that outputs variable voltage

Total noob here, I'm looking to implement a circuit to control a fan that has these specifications: Pin 1 and 3 are DC- Pin 2 is DC+ Voltage should be from 6 to 16 V It needs to operate in 70-second ...
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2answers
150 views

Inverting opamp amplifier

The gain of an ideal opamp is considered infinite and Vout=K(V+ - V-). where V+ is the non-inverting input and V- is the inverting input. The output voltage in the case of an inverting opamp amplifier ...
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1answer
56 views

How do I get an output of 24V from a K30319 adapter? [closed]

The K30319 adapter is a 24V adapter made by Canon in Vietnam. I pulled it out of a Canon printer someone chucked in the garbage. The adapter works as far as I can tell. I'd like to use this adapter to ...
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2answers
82 views

Purpose of the capacitor which is placed in parallel to collector and emitter of the transistor?

Can someone explain the purpose of the C469 capacitor, which placed in parallel to collector and emitter of the transistor? Edit: Sorry for the mistake, C469 is parallel to CE
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2answers
94 views

Purpose of 100 ohm resistor on guitar pedal output buffer

On the schematic for an Ibanez "Tube Screamer" there is a 100 ohm resistor in series with the output emitter follower: The output impedance of this pedal is 1.2K: It looks like RB has a ...
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44 views

Sinking and sourcing switching I/O hardware configuration

This is the Siemens S7 PLC and I'm wondering what's the internal circuit of the I/O looks like? I'm trying to design an I/O circuit that allows me to switch between sinking and sourcing I/O by ...
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1answer
52 views

Retrieve pinout of proximity sensor

I need to retrieve the pinout of a proximity sensor. I don't have any specification nor order code. The sensor has 3 wires that are connected to the main board. I made some measurements with a ...
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45 views

MAX608 boost converter stopped working, the OUT pin is shorted to ground

I was working on a little project to convert 3.7V from a lithium ion cell to 5V using a MAX608 boost convertor IC. I put the required components according to page 7 of the data sheet and everything ...
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1answer
77 views

How do I calculate the transfer function of this basic terminated RC filter?

I'm reading through an electronics book to teach myself, and I'm in the section about filters. I've been following along so far, but now I'm confused about how the author came to a conclusion in his ...
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15 views

Convert Output Voltage from Delsys Trigno to Acceleration in Matlab

I have the Delsys Trigno Wireless EMG Sensors connected to NI DAQExpress and am reading the signals into MATLAB. I am reading the EMG data from one sensor (Ch 1.1) into AI1 port and the acceleration ...
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1answer
70 views

Watt output of radio station

I was wondering how many watts an AM radio station outputs, and if I can calculate the watts on a tuned antenna by this equation: Where Win = the watts input for the antenna, Wout = the watts output ...
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68 views

LM3478/LM5155 configuration on a wide input and output voltage range

In my last question I mentioned the case of obtaining different output voltages from a single switching regulator. I ended up running a successful simulation of such setup in LTSpice using MC34063 and ...
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22 views

finding output voltage of 2 cascaded sub circuits without KCL

Hi I am trying to cascade sub-circuit 1 and sub-curcuit-2 and find Vout2 with given Vin1. I do not want to just cascade them(connecting Vout1 node to Vin2 node) and write bunch of KCL equations. I ...
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1answer
62 views

Why doesn't function generator documentation ever mention the maximum output current?

The output impedance mentioned, but how does this translate to maximum current? What happens if you short circuit the output of a function generator? Let's take the XR-2206 for example. The datasheet ...
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2answers
82 views

transistor amplifier

My teacher asked me to design an amplifier circuit using BJT transistors with following properties: (Is=10fA , beta=100, Vce sat =0.2) I can use as many transistors as i want but i try to minimize the ...
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1answer
41 views

555 timer output equation

I've read that that the output voltage available at the Vout pin is approximately equal to the Vcc applied to pin 8 minus 1.7V. This is for an input voltage of +15V. I wanted to know if there is an ...
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2answers
89 views

What is causing the erratic sine wave in my Hartley oscillator?

I have made a Hartley oscillator in multisim in order to convert a DC input into an AC output but my output sine wave is not smooth. I don't know what is causing it. Hartley oscillator configuration ...
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24 views

8x3 Priority Encoder question about the output functions

Cheers, I have this 8x3 encoder with inputs of Ai and outputs Yj. I have to find the minimized function of the outputs. [![8x3 Priority Encoder Truth Table][1]][1] I understand that for Y2 the output ...
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2answers
189 views

How does increasing the capacitance affect the output voltage for a buck converter and boost converter?

From the formula of charge relating capacitance and voltage, $$ Q = CV $$ Capacitance is inversely proportional to voltage. This is how I got the idea that possibly when increasing the capacitance, ...
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2answers
173 views

How to make push button as logic state?

We know when use switch easy for us to state input logic. Logic 1 means input connected to positive terminal. Logic 0 means input connected to negative terminal. How about unconnected input from ...
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0answers
22 views

Buck regulator output capacitor via current sharing - whether via symmetry matters

I have a question regarding Buck regulator output capacitors via current sharing. we have 12V to 1V @ 35A regulator design, which uses 7x100uF,5x150uF bulk capacitors, which are placed sequentially ...
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1answer
82 views

How many I/O pins does this device have?

Digilent Online Store Page I have attached a link to the digilent store webpage of an FPGA board where the datasheet and schematic can be viewed in PDF's. I want to know how many free digital I/O pins ...
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3answers
86 views

L317T voltage regulator output too low

I got a L317T voltage regulator. I connected it to a 12V input, but the output which i get is only ~0,32Volts instead of ~5Volts. Why is that happening. Its not a problematic regulator. Every one of ...
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2answers
107 views

How to prevent short circuit between output pins

I am trying to hack some signals coming from an old computer going to a Floppy drive using an ATtiny1614 microcontroller. Normally the computer has full control of the signal lines but at some window ...
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0answers
64 views

Name of unusual power adaptor plug

I'm trying to find out if this kind of power plug for my laptop has a name, so that I can google for it more successfully. I haven't ever seen any other like it, with its 4 pin connectors. Does this ...
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2answers
129 views

How can I protect an analog output from high voltage?

I have a DAC output from my STM32 microcontroller. The DAC output gives 0-3.3V and I want to protect it from high voltage backwards, e.g if I apply e.g 30V onto the DAC output by mistake. Is this the ...
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0answers
35 views

Linear systems, causality input-output

I have been preparing for a midterm and my professor posted a sample midterm but no answers, i solved the question here and asked him if it made sense, and he said the answer will be fully correct if ...
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1answer
88 views

Why would we use a Single Schmitt-Trigger Buffer?

The SN74LVC1G17 was used on a DIO circuit as a buffer on a FPGA. Is it used to have a higher current on the output ? Here is the datasheet https://www.ti.com/lit/ds/symlink/sn74lvc1g17.pdf?ts=...
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1answer
272 views

Using an LM358 as line level buffer

Recently, I've acquired an old SNES, specifically the SNSM-CPU-1CHIP-03 model, with no audio output. I traced the issue to a dead S-Mix chip, essentially a buffer between the audio DAC and the line ...
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3answers
62 views

How can this circuit be best described?

Here, the green waveform is the input waveform(V1) and the blue waveform is the potential drop across Vc1 and Vc2. To me it seems like a peak detector getting clamped, but then the first half cycle ...
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1answer
58 views

What is this circuit with increasing voltage of full rectified wave?

{ The first image is original circuit.} { The second image is the output across RL resistor with ac source amplitude voltage 5V. } {Simulated circuit with output measured between A and B nodes.} To me ...
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2answers
158 views

Op-amp as an inverting amplifier with diode on OUT, circuit close to precision rectifier

I am wondering which kind of circuit is that and what is does when +-Vin is applied on the input. The output of the circuit is cathode of D26/R30/C52 node. Thank you.
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3answers
206 views

Why is the output impedance of a non-inverting op amp zero? [closed]

Also is it actually zero or just very low?
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1answer
36 views

Differential signalling with negative feedback

Does differential signalling always comes hand to hand with a negative feedback circuit?Else the 1s and 0s would be the same!because if we have ground in the inverting pin then the output voltage will ...

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