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.

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2answers
57 views

Converting a 9v Battery powered Device to a 9v dc power supply [duplicate]

I have an old Vivanco MX300 mixer which runs of a 9v battery. I have it in the same place and it's an inconvenience having it run by batteries. Could I use an old AC/DC adapter that would supply 9v ...
0
votes
1answer
34 views

Converting a 10A supply into a 16A appliance [on hold]

Is it possible to insert a converter between regular 10A 240V mains supply that would be capable of running a tool rated at 16A, 3500W? Obviously, the tool won't run to it's full capacity but could ...
0
votes
1answer
45 views

Hot MOSFET DC-DC Boost Converter

What: I'm designing a DC-DC Boost converter for a solar panel maxmimum-power-point-tracker (MPPT). Setup: I'm using a TPS2819 MOSFET driver connected to a FQD16N25C N-MOSFET. The TPS2819 is driven ...
2
votes
1answer
50 views

Measuring precisely the efficency of a power converter

I am trying to measure the efficiency of a DC/DC boost-converter in several operating points as precisely as possible. Right now I am measuring my input-voltage and output-voltage with a multimeter, ...
1
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1answer
49 views

Current source for boost converter

I'm designing a boost converter to boost 3.3 V to ~25-30 V. I have successfully simulated it in SPICE, but the current draw for converter is enormous - about 8-9 A. How can I handle this nuisance? ...
6
votes
5answers
860 views

Extract 5W low voltage power from 3000W high voltage source

I have a solarpanel array that generates 600V, 5A (3kW). I want to create a small electronic unit to measure the DC current and voltage and transmit this wireless. For this I have an electronic board ...
0
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0answers
23 views

Design of L and C in voltage multiplier cell used with interleaved boost converter

Can you provide me with the formula to be used for the design of inductor and capacitor in a voltage multiplier cell used in two phase interleaved boost converter?
0
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0answers
25 views

Siemens Frequency Converter 420 start voltage

I use a relay to control Siemens Frequency Converter 420 to start and stop pump, but I found when the pump starts and stops working, the frequency converter will generate a +10 and -7V voltage, but ...
0
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2answers
94 views

Convert DC generator to variable AC

Is there a way to convert a DC generator signal to AC and be able to control the frequency and current? Ultimately, I would like to use this signal to measure the impedance of a battery.
0
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0answers
47 views

Drawing 2A from 1.5A source. What are the risks? [duplicate]

I have 220V to 12V converter with 1.5A output. My simple motor draws 12V and 2A. Are there any potential risks, when the difference is so small (besides motor being slower)? I cant figure out if ...
-1
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2answers
78 views

300 amps 12vdc on a standard(American) wall outlet

I am building a project that will draw around 300 amps at 12vdc, for about 40-60 minutes then it will rest for a few minutes. For this projects application it will be very impractical to build a ...
0
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0answers
42 views

Vitesse VSC8221 Ethernet PHY for Media Converter Application

I'm currently designing a media converter board using Vitesse VSC8221. Just as an FYI, the documents for this product are all available at the product page. No NDA is required. When I say media ...
0
votes
3answers
257 views

Converting serial signal (12V-5V) and reading it using Arduino

I'm trying to read some commands from a device that uses non-standard voltage levels for serial communication. It uses 0V for 0 and 12V for 1. For all I know, TTL levels are 0-5V, so if I want to ...
-3
votes
1answer
84 views

Converting 15AC to 5VDC [closed]

I'm currently working on my project that teacher gave.I need to convert my 15VAC input to 5VDC output. EDIT : I am so sorry. I am not experienced user. I should give you more information about where ...
1
vote
1answer
46 views

10GHz Regime Differential to Single Ended Conversion

I'm looking for a board mount (IC) solution that will take the differential output of something like ONET1191 @10GHz and convert it to 50 or even 75 Ohm single ended. I've looked through various ...
1
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2answers
615 views

DC to AC converter circuit

I have seen in many books and sites that we can build DC to AC converter circuits. My question is whether there is any limit for the range of DC voltage and AC voltage. Is it possible to get high AC ...
1
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2answers
72 views

How can I know whether a random “known not TTL” RS232 device will work with any old random USB-RS232 converter?

I've been hunting around for RS232 converters for a little while now, trying to get my head around the way RS232 works (or at least how it's supposed to), and the way RS232-USB converters (more ...
1
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2answers
98 views

Boost Regulator issue at high load

I'm trying to understand the causes of output voltage dropping as my load increases on a boost converter. The switcher i'm using is a TPS61093 from TI. I'm troubleshooting a circuit that someone else ...
2
votes
2answers
199 views

Average output voltage of a fully controlled full wave rectifier

What is the average voltage for a fully controlled bridge rectifier with firing angle \$\alpha\$ ? In a lot of web resources it is said to be: $$\frac{V_{max}}{\pi} (1+ cos(\alpha))$$ For example ...
0
votes
4answers
97 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
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2answers
221 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
442 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
83 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
199 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
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1answer
196 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
65 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
92 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
294 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
34 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
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1answer
77 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
534 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
219 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
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3answers
94 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
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2answers
533 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
198 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
103 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
49 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
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0answers
59 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
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2answers
99 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
79 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
47 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
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3answers
130 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
102 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
599 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
144 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
803 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 ...
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votes
2answers
126 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
218 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
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0answers
76 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
211 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 ...