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

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21 views

output power of oscillator

I want to calculate the output power of an oscillator (stack structure in fig.1). The author mentioned the output power follows equation (1) where beta=R/Z, but I don't understand. My understanding ...
2
votes
3answers
61 views

How to enable Output pin to high by default in Arduino Uno?

In Arduino Uno, I noticed that when I set a PIN to output, the default initial state is low. Is there a way to set the initial output state to high? The pinmode documentation supports only input, ...
0
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0answers
40 views

Tube Guitar Amp Audio Output Transformer Winding Theory

How do you determine the Output Transformer wattage needed on a tube amp? How do I work out the diameter of bobbin needed and primary/secondary wire thickness in an output transformer? How do I do ...
0
votes
1answer
23 views

no output on stereo [closed]

My stereo sometimes taking a break from playing on left channel. If I turn it off for a second and turn back on again it will play for less then a second and then will stop playing on left channel ...
0
votes
2answers
38 views

Hall effect output voltage

I have an omnipolar (2ssm) hall effect sensor which outputs 400mV when triggered by a magnetic field. Basically what I want to know is, is there a way to increase this output voltage to be able to ...
0
votes
1answer
51 views

Power at the differential output

I was measuring the voltage at the intermediate frequency output of this tuner http://superkuh.com/gnuradio/R820T_datasheet-Non_R-20111130_unlocked.pdf using the oscilloscope. The tuner has a ...
0
votes
1answer
32 views

Amplifier IC - selecting input (Sound Card/Phone jack) and output(Headphones/RCA)

Good evening guys! I'm trying to figure out the solution to my problem, that I have encountered, but I just can't find anything close. So, first of all, the situation: I'm trying to build an 5.1 ...
1
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0answers
39 views

Wiring 2 audio output transfomer secondaries in series or parallel

I want to know if wiring 2 audio output secondaries in series is doable. See problems with this schem? Would parallel be a viable alternative?
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2answers
53 views

What does mean a rail to rail output opAmp?

Context : have a very similar problem to the one exposed here, and in the best rated answer (by Olin Lathrop), he says we need a rail to rail output opamp. My question : What is rail to rail opamp ...
1
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0answers
49 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
vote
1answer
48 views

How to connect 2 different power supplies together

I have a power supply that provide the following outputs (+&-15V) & (+&-10V) sadly this power supply is obsolete so I have to get those voltages from two separate power supplies one that ...
1
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2answers
49 views

Impulse Response of a circuit

The following periodic function, \$x(t)\$, is the input to a linear, time-invariant system The impulse response of this system is $$h(t) = \frac{\sin t}{t} $$ which I converted to ...
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2answers
34 views

Impulse Response of a LTI system

The input to a L.T.I. circuit is \$x(t) = 6\cos(t)\cos(3t)\$, and the impulse response of the circuit is $$h(t) = \frac{\sin(3t)}{3t}$$ Obtain an explicit expression for the output y(t) as a function ...
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0answers
59 views

Self Oscillating Flyback Converter /w Adjustable Output Voltage

I'd like to make a 36V-3A direct offline self oscillating flyback converter for my own use. The following is the simplified schematic (I didn't show protective elements, fuses, current limiters etc.): ...
1
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3answers
48 views

Updating Multiple Ports on 8bit AVR in Single Cycle

On the 8bit Atmel AVR MCUS (specifically mega and xmega series), is it possible to simultaneously modify multiple ports in a single instruction cycle? For example, I have a 512kB RAM chip which ...
0
votes
1answer
38 views

Choosing output capacitor for power converting

In general, what is the best practice (mathematically) to choose an output capacitor for a boost or a buck converter? In other words, could someone walk me through the design/decision making process ...
-2
votes
2answers
40 views

How does an output current splits between two loads?

In this project a buck-boost IC outputs 5V @ 1.8A MAX. That OUTPUT can power two things simultaneously: Charging a device through USB port Power the project's control board How can I be sure that ...
0
votes
0answers
42 views

Turning Optical Encoder into Digital Outputs

I've got a challenge... I'm working to build a custom arcade game. Specifically, this is an arcade version of the original Mario Kart. I've got an arcade steering setup that works off of an optical ...
3
votes
2answers
97 views

Best way to implement outputs pins with leds in a parallel way

What is the best way to implement an output but with also a led, so I can use the output for other purpose (for example a GPIO for a PIC, or a lot of logic gates) but with a led indicador that the ...
0
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2answers
119 views

5v hydro power generator produces almost 12v

I have this hydropower generator. At its specs it says that it would produce a 5v voltage. So when I have installed this to my water system, and measure it using a tester it says that it produces ...
0
votes
2answers
57 views

Updating outputs in PLCs

For all PLC manufacturers, is Mass I/O copying the choice for updating outputs? I found that there is another possible method: the continuous I/O updating. Can anyone tell me what is the reason for ...
1
vote
1answer
64 views

FPGA design rules - Using a Module Output Register Value Internaly

I'm trying to optimize a verilog code and I found something that I don't feel it's correct. I found a module that has an output and it's using that output value as a condition in a case statement. ...
0
votes
4answers
124 views

How to increase number of micro-controller inputs?

I have relatively little experience with electronics, but do have a basic understanding. I am attempting to build a measuring device, which will measure 100 points in 0.1 seconds. These will all ...
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2answers
76 views

Generic question about interfacing a microcontroller with a device: when is the current limit a problem?

I have an Arduino Board, to be precise many models, but let say I want to interface a ATmega328p with another integrated circuit (all is running at 3.3 V). In this case I want to connect Arduino with ...
1
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2answers
79 views

A protecting circuit using GPIO of the BeagleBone (Black or Green)

I'm really trying to develop a cape since I need to use 7-8 GPIO-Pins of my BBB Green and Black as Output. I'm too afraid to destroy the board somehow, so I was thinking to implement a solution which ...
0
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2answers
70 views

Same pin as output and input

In the 7447 BCD to 7-segment decoder chip, pin 4 is BI'/RBO'. That pin acts both as input and output. I would like to understand how exactly the internal circuitry works to make this possible. On page ...
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2answers
60 views

How to understand dynamic range of op amp from TI's book

I am reading TI's op amps for everyone. I am very confused about its description about dynamic range as follows I have some questions about it, Since it is the maximum output voltage the op amp ...
0
votes
2answers
135 views

Safe way connect a 3.3V output to an input with weak pullup to 5V

I plan to connect a 5V IC to a beaglebone black(explicitly not 5V tolerant 3.3V IOs). For signals going to the beaglebone black I need a level shifter. But the input of the 5V IC has a weak pullup ...
0
votes
2answers
88 views

Why should the output impedance of a current source be much greater than the input impedance of the load?

For a voltage source (except RF circuits), the output impedance of the source signal being coupled must be much smaller than the input impedance of the load. This is first of all done to prevent ...
0
votes
1answer
55 views

input current vs output current

My old/new laptop adapter specs as given below. I understand the output current for new is 4.5A which is OK when compared to old which provides 3.25A load since it can provide more load. However, ...
2
votes
4answers
108 views

Unstable input to trigger LED after 10-15 seconds (12 V)

I have a small excavator that, when fuel levels get low, the warning light flashes irregularly (due to movement of the machine) until it stays on as fuel level gets really low. It's very annoying and ...
0
votes
2answers
79 views

Determining output impedance for a pulse generator

I have a basic question about determining the output impedance of a circuit. Output of this circuit is through R6 in the Figure above. This will be an input for a data-acquisition hardware channel ...
0
votes
1answer
76 views

Connecting Multiple Sensors

I have 4 pairs of "LED + LDR" sensor. I need to be able to switch each of them on/off independently and take reading from the LDRs. To connect all of them to the microcontroller board, I would need 4 ...
1
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2answers
84 views

What is the effect of a varying Vcc on the output pin of an IC?

I'm designing a circuit with this transceiver. But I was wondering what the effect would be of an voltage source without a bypass capacitor, so with a possible varying Vcc. Would this affect the ...
1
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1answer
84 views

Positive Part of a stereo jack?

Ok, so I'm building a bass/treble cut switch for a guitar pedal and on the diagram that I'm following it shows an output switch with a + label on it. Which part of the jack is that ? Also, where is ...
1
vote
1answer
125 views

Power In does not Equal Power Out

I have the following setup: 480V, 200A service fed into PWM Drive, Drive output going to 1000kVA step up transformer (8.4 ratio) feeding a 2380V/53A 3phase induction motor. The motor is UNLOADED. ...
3
votes
1answer
85 views

Output of a D flipflop upon power up?

I guess the output state of a D-flipflop is unknown upon power up. But what are the chances that it is neither 0 nor 1 but an intermediate state such as VDD/2? The D-flipflop in this question has an ...
0
votes
2answers
71 views

Data received when earpiece connected to audio jack? [duplicate]

I'm still new to electronics and signals. I'm currently doing a project, and i have to detect the type of earpiece connected to an audio jack. So far, i found out that when you plug in your ...
-2
votes
1answer
68 views

Altera FPGA Pinout help [closed]

I recently bought an Altera FPGA Cyclone II board off of ebay, it says BAIXUN on the LCD display. It didnt come with any documentation. I'm trying to program the FPGA board but I have no idea what pin ...
0
votes
1answer
70 views

Why can some products take 110v 60hz and also 240v 50hz? [closed]

Most modern chargers can go into any output across the world. I believe this is because of low powered "Switch mode" technology it uses rather than transformers, like they used to. To go from high AC ...
1
vote
1answer
139 views

How to Shift the DC Level of Positive-going Op Amp Input Signal into the Negative Supply Region

I have a 1Vpp 1Hz repetitive arbitrary wave signal that resides entirely above the DC line. IOW there is no negative-going excursion. This is output from an LM358 inverting op amp buffer powered ...
-4
votes
2answers
135 views

Can I play sound from USB, Not from sound card?

I made an FM radio transmitter circuit and it works. It is supplied using a 12 volts transformer. The input of the transmitter is connected to the output of my PC's sound card (just like the way we ...
1
vote
1answer
52 views

Accidentally outputting to an optoisolator

It's your friendly electronic hobbyist again. I am designing a board where I am reading input from an optoisolator like this. IN7 is connected to a peripheral parallel port chip of an old 8-bit ...
3
votes
1answer
202 views

Can I replace watch quartz with DS3231 32 kHz output?

I'd like to know if it's possible to synchronize classical quartz clock by replacing inbuilt quartz crystal with DS3231's 32 kHz output. I need to synchronize my analog watch with RTC DS3231. Am I ...
1
vote
1answer
312 views

Latched outputs on 8255A

I am studying about the 8255A PPI. In Mode 0 of it, it says that the outputs are latched and inputs are not latched. What exactly does it mean?
1
vote
0answers
83 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 ...
1
vote
2answers
74 views

Simple LM386 Circuit RC Branch Question

Please take a moment to checkout at the LM386 circuit below. The circuit comes directly from the LM386 specifications document: My question revolves around the output branch consisting of the 0.05 ...
0
votes
2answers
40 views

USB controllable digital output ports at >100kHz [closed]

I need to control 8 digital output pins over a USB connection at a minimum of 100kHz. What solutions exists that allows me to do that? Preferable a COTS module if possible. I am thinking something ...
-1
votes
1answer
80 views

How to connect a headset as a microphone, and speakers at the same time with only one cable [closed]

So, I recently bought a headset from Tritton, named "Kama", as I got home I noticed a unusual problem... The audio input and output are in the same cable. I would really want to use this as both, but ...
3
votes
3answers
1k views

Correct Way to Limit Op Amp Output Current

I'm planning to use an AD817 op amp in the output stage of my function generator (datasheet). I'm worried about how the part would stand up to a short, so I ran some simulations. The simulation below ...