A circuit that converts a signal from one form to another. Analog to digital, Digital to analog, Voltage to current, Current to voltage etc. The key to understanding is the transformational properties of the circuit as opposed to just amplification or buffering.

learn more… | top users | synonyms

-1
votes
0answers
21 views

Protocol Encapsulation vs Convertisseur [duplicate]

Since the pc does not have M-bus interface it necessary to use a converter RS232/M-Bus. My question is: is it possible to encapsulate the M-Bus protocol in RS232 instead of using a converter? Hajeur
0
votes
4answers
95 views

Why don't you ever see a “anything” over (cable type)?

Possibly an obvious answer, and I'm new to electronics. You can easily find converters that convert a specific type of signal to another cable to be decompressed on the other end (example, a VGA over ...
1
vote
2answers
68 views

Sensing weight with strain gauge, InAmp, ADC & Pi

I have an SEN-10245 sensor for weighing objects (essentially a strain gauge). The goal is to capture data with a Raspberry Pi, so the signal from the weight sensor needs to be amplified and then ran ...
3
votes
2answers
368 views

How do I make an LED turn on when my output reaches 5v?

I'm a hobbyist and pretty new to many of the components involved, so I hope you guys can help me here. I'm trying to keep the circuit as simple as possible. I made a small variable power supply with ...
-1
votes
1answer
30 views

24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device,

I am having four 24V 250W solar Panels can I use them with my existing 12V Battery and Inverter with the help of a (24V to 12V DC-DC Car Power Supply Inverter Converter Conversion Device 30A) instead ...
2
votes
3answers
172 views

Beginner A to D Converter

I'm trying to understand the readings I am receiving from the analog to digital converter (ADC). I am using an integrated uIceblue2 microcontroller. The microcontroller in the circuit is a 18F4550. ...
1
vote
1answer
84 views

Using USB to Parallel Port, Send an 8-bit data of Assembly Code [duplicate]

For educational purposes, our professors have DB25 ports on our laboratory rooms, and of course we can only simulate our assembly codes in there Our professor said that it might not be possible to ...
0
votes
1answer
36 views

Power transmission/AC or DC/Cable cross section/Converters

I have unusual project. I want to optimize mass. Here are strict questions (topics) I would like to get answers to. Any help would be appreciated (direct answer or link). I would like to deliver ...
0
votes
1answer
88 views

How long does it take to receive data from a cable, turn it into bits, then send it back out again? [closed]

I need to read in data off of a fiber optic (or copper, though I figured fiber optic would be faster) cable, convert it to bits, do something with it that should only take a clock cycle or two, then ...
2
votes
2answers
76 views

How to Calculate Appropriate R-2R D/A Converter Resistor Values?

I am trying to make a 4-bit R-2R D/A Converter where a +5V signal on D3 would output -5V, a +5V on D2 would output -2.5V, etc. How would the resistor values for R/2R be calculated?
0
votes
0answers
29 views

Industrial level binary decoder

For a project we have to work on, in order to save some digital I/O we need to convert 4 output reperenting a number from 0-15 into a single line. Almosty the same done by 74141 chip, even if it is ...
1
vote
1answer
39 views

SFP pin requirement

I have a question regarding SFP pin requirements. The SFP pin descriptions can be found in the standard document found here. I'm currently designing a high speed LED transmitter and PIN-TIA receiver ...
2
votes
4answers
154 views

Convert a PWM to analogue with double the voltage range?

I have a PWM output (0-5v) that I need to convert to an analogue voltage. Simple = RC filter. However, the voltage range from that analogue voltage needs to be twice that of the input voltage, and I'm ...
2
votes
4answers
118 views

Do digital Anti Aliasing filters exist for traditional ADCs?

I'm currently learning about Analogue to Digital Converters. From what I understand, aliasing occurs if the input signal being sampled has power above the "Nyquist frequency" of the ADC(Sampling ...
1
vote
3answers
75 views

Picking an AC-DC Converter to Minimize Cost [closed]

I'm trying to design an AC/DC converter to implement into a project I'm working on. The project needs to be isolated from mains and shouldn't require more than 1A at 5V. My question for you is what ...
1
vote
2answers
201 views

Is it possible to convert 3 Phase 220V to 110V without use of a transformer?

I am living in an area where line voltage is 220V. If I have access to all 3 phases, is it possible to create a "socket" with output voltage of ~110V, without use of a transformer? This is primarily a ...
3
votes
1answer
121 views

What dc-dc topology to use for a 300W step-up converter?

I am asked to design a dc-dc converter with the following specifications: Vin=24V(2 lead-acid batteries in series), Vout=300V and Iout=1A. My initial choice of topology was the boost converter. ...
2
votes
1answer
78 views

Help me find DAC Output function

Please help me find the output function, with \$V_{REF}\$ as reference, and \$b_5-b_0\$ as the digital input for this circuit (1): I'm kinda confused with this Series capacitor that's splitting the ...
0
votes
1answer
35 views

AV.link dongle (SCART's CEC)

I am looking for a device I can plug into an old TV's SCART port, which will feed me remote control commands (like 'arrow-up', 'OK', 'menu', etc.) received over the SCART connector's AV.link (control ...
1
vote
0answers
48 views

TI's bypass mode step-down converters

Texas Instruments encourages the use of the TPS62730 step-down converter with bypass mode along its RF devices. Does this mean : its noise is low enough not to affect RF ? Thus being a more ...
1
vote
2answers
91 views

Combined chip with LDO and Buck, what use?

I am searching for a Li-polymer 1A charger with a 3V regulated output. I have found Linear LTC355x serie but can't, after reading many "LDO vs Switching" debates, understand the use of both on the ...
0
votes
1answer
66 views

Boost converter [closed]

I'm trying to build a 12v to 48v boost converter. I have an output current requirement of 5A. The efficiency most moor than 90%. which component can I used?
1
vote
1answer
34 views

Replace Current controlled Voltage Source Converter with Rectifier Diodes in ELC?

In this paper an Electronic Load Controller (ELC) for two (2) parallel generators is designed. I wish to omit the second generator and hope for simplification. Now two questions arose: (while I ...
1
vote
3answers
92 views

Boost Converter Output Voltage dependence

Does the output voltage depend on anything except for the Duty Cycle? Assuming no losses across switch, inductor and caps.
2
votes
2answers
96 views

Analog to digital converter

I have very little electrical knowledge. So here is my question. I need to test some wiring harnesses if they grouped like it should be. There is 70-80 points. differencing on the harness, these ...
1
vote
0answers
457 views

RGBHV (VGA) to YPbPr Converter and Waveforms?

Purely for hobby, I am working on an RGBHV (VGA) to YPbPr (Component) converter circuit for old games consoles modified to output RGBHV on a VGA cable. From the game consoles, the RGB signal is taken ...
2
votes
2answers
124 views

How to use Recom's R-785-0.5 switching DC-DC converters properly?

For my "prolonging life of old batteries" project I decided to try a switching DC-DC converter. I've got a couple of Recom's R-7805s (datasheet: ...
1
vote
1answer
583 views

How to make sawtooth wave from square or triangular wave?

I know it is easy to convert a square wave to a triangular wave by an integrator. I know also that they can be made out of Harmonics but I don't know how to make a sawtooth wave form. Having a ...
-1
votes
2answers
121 views

Is something wrong with my frequency selections for a buck converter controller? [closed]

I'm designing a processor-controlled buck converter. I'm seeing some instabilities, which I suspect may be due to improper frequency selection at different points in my system. I'm trying to regulate ...
3
votes
2answers
191 views

Understanding Boost Converter

Theres a very good explanation for the Boost Converter on Wikipedia. But it is a very mathematical explanation. How would you explain the Boost converter to a non Math person like me?
0
votes
0answers
67 views

RS-232 <-> RS-485 converter with special wakeup pin

I need am RS-232 to RS-485 converter with a special pin for waking up the RS-485 master. Effectively this means that in addition to standard (2-wire, half duplex) RS-485, I need two more wires ...
-4
votes
1answer
144 views

What is wrong with my equation. Converting 24v to 5v [duplicate]

I want to make a converter that takes in 24v and charges a phone by giving it 5v. According to my AC phone charger the output given to my phone is 5v and 0.7A. Therefore I have to lower the voltage by ...
5
votes
2answers
378 views

Power an ornament via christmas tree light bulb socket

My dad owns a really neat star trek Christmas tree ornament that plugs into a standard bulb socket in a Christmas tree light string. It has a button that, when pushed, causes Spock to say a brief ...
4
votes
1answer
716 views

Arduino Boost Converter. Connecting load makes converter non functional

I am trying to build a DC-DC Buck-Boost Converter using this basic schematic and an Arduino with the analogWrite() function as my PWM generator. I only want to step up 2.4-3V to ~5V. If it's just the ...
4
votes
2answers
146 views

Buck Converter Operation Question

i have been reading about the buck converter, and have also referred to the various online resources like here. In the above circuit, as I understand, when switch closes, current starts to increase ...
0
votes
2answers
1k views

3.3V <-> 24V interface

I need to interface an ARM µC (BeagleBone Black) with a 24VDC system. 24VDC sensors and 24VDC actuators should be connected to the BeagleBone Black. I am wondered how to do this. I have found a ...
1
vote
2answers
392 views

Is this a bidirectional buck/boost converter

I found this interesting IC on Linear Technologies site, but I don't understand if it, or its development board, can both boost input voltage to output and buck output voltage back to input. ...
2
votes
2answers
2k views

GY-521 MPU-6050 + Arduino nano - Logic converter or not?

I bought this MPU-6050: link (marked as "GY-521" on the board) According to the manufacturers' site, the sensor logic level is 3.3V (though the eBay page says ...
2
votes
3answers
370 views

Convert 320VDC to 220VAC or 48VDC voltage using 220VAC (UK) UPS?

I've got access to 12 flexible Solar Panels - 320VDC each Main voltage is 220VAC (here in the UK) and also might buy an electric engine running at 48VDC. Would a 220VAC Uninterruptable Power Supply ...
2
votes
3answers
362 views

How could I build a headphone stereo to mono converter?

I have a friend who is permanently deaf in one ear but has normal hearing ability in his other ear. When he listens to music with headphones or earbuds, he can't hear one of the channels which ...
0
votes
1answer
130 views

Is there a prebuilt PCB that does the equivalent of a wall wart for a similar price?

I am working on a project, and I need to convert 240V AC power to 5V DC to power a microprocessor. I can't use a wall wart, and I am looking for a PCB that will do the same as one - for near the same ...
0
votes
1answer
143 views

Bidirectional level shifter circuit problem

Ok, so here is my problem: I am trying to create a small 3.3V to 5V signal level shifter, using a BSS138 transistor. This is my source for the circuit: a SparkFun circuit. This is my circuit: As ...
2
votes
2answers
115 views

What is reference voltage in a D/A converter

When I searched on the internet what I got as an answer for the above question is that the reference voltage means the highest voltage tha D/A can output. But my lecturer at college did a calculation ...
2
votes
1answer
95 views

5-bit AD converter

I just started working with AD converters and I got a trivial question about it. In this one scenario, I have a 5-bit AD converter with a resolution of 312.5 mV. How can I calculate Vfs based on ...
3
votes
1answer
269 views

Need help with a sub-standard RS232

I've built a UART-RS232 converter based on max232 and it works well... but not for what I need :) According to Maxim's datasheet the RS232 side signal voltage should be theoretically +/-10v (5v * 2), ...
-2
votes
1answer
162 views

How much current draw will a dc-dc converter have in this situation?

I am trying to make a mobile computer for my Raspberry Pi. The problem here, is powering the Pi, screen AND the USB hub from the same power source. I have bought this: ...
0
votes
0answers
1k views

Convert Iphone 3.5mm pin to standartd Samsung Android 3.5mm pin

This is a simple question. I want the new Iphone EarPod to work with Samsung/Nokia phones. I tried to use the headphone to Samsung phones. Here is the result Here is the Universal 4-pole Cell ...
2
votes
2answers
205 views

Boost converter to 5V

I'm searching for a boost converter to convert up small voltage (min 0.5V / max 81mA) to 5V. (the smaller the better) Can you recommend a special type number?
0
votes
2answers
117 views

Signal to Noise ratio problem

A 200mv peak to peak sinusoidal signal is applied to an ideal 12 bit A/D converter, for which Vref(v p-p full scale) is 5v. Find signal to noise ratio. This is a problem worked out by one of my ...
4
votes
1answer
82 views

Is it possible to make a multi-display adapter as an independent project?

I've been looking at the Matrox DualHead2Go, which is essentially the best/easiest way to go about using dual monitors for a MacBook Pro. Some people suggest using a USB to VGA or HDMI - but obviously ...