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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26 views

DC-DC step up and step down converter for a solar panel

I have a 1W solar panel that will output about from 0 to 7V (7V in full sun). I want to power up a small USB gadget with it. I need a device that is a step up converter when panel's voltage is under ...
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1answer
64 views

To use Power banks and DC-DC step up Converter to make Electric Bicycle battery Pack

Summary of the whole project I have a small project in mind, just want to find out is this a possible way to make a useful power pack rather then use this normal way [![enter image description ...
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1answer
28 views

Where do active display converters get their power from?

I have bought a mini Display Port to HDMI/VGA/DVI active converter. It works on VGA, but VGA is broken [dimmed screen? and I don't know how to fix that] on the monitor (so my only option left is HDMI)....
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2answers
185 views

What type of controller is this?

In many simple microcontroller power controller applications, I see controllers that work in an "increment/decrement" on error with hysteresis implemented e.g. ...
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1answer
87 views

Voltage to current converter

In the circuit diagram, R11 is the DUT across which current needs to be measured. According to tests performed on the device, the output current is 1A for sinusoidal input of amplitude 10V and ...
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2answers
42 views

Alkaline Battery for Boost converter for 1000ma current requirement?

I am working on a very small scale project that needs 300-600ma bursts at 5v for 10-20 seconds (a bank of LEDs) followed by a period of low power consumption (around 10ma for around an hour or so for ...
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2answers
45 views

Current in Buck Converter

In Buck Converter, when switch in ON, Vi(I/P voltage)=Vl(inductor Voltage)+Vo(O/P voltage)when we switch it On, current increases linearly(according to the wikipedia) then Vl=Ldi/dt=constant and Vo(=...
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0answers
65 views

problem with igbt driver when turn on ac voltage supply

I 'm trying to make project "Design of a single phases AC-AC", but when i turn on voltage supply 220v/50hz, igbt and fuse are immediately dead, i don't know why? i had lost more money for it, can you ...
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0answers
29 views

What conversion topology is used in the following image?

We had a broken microinverter and we just opened it up. Its made by a chinese manufacturer. I'm just curious to know what conversion topology is used in this product.I first thought it uses full ...
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4answers
89 views

How do I use this Switching Power Supply with power from a wall outlet?

I assume the point of these devices is to convert wall outlet power into something useable for electronics projects/products. In my case, I need 24V at 5A for testing an electric motor. So I am ...
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2answers
174 views

NodeMCU v2, driving a 5v relay

I was under impression that you can drive 5V relay with no problems, but now it seems you need additional components to do that, which makes it no longer simple. The setup I think now is the following:...
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3answers
102 views

How would I go about converting a change in capacitance into a voltage?

Just starting out with electronics here as a physics student- I appreciate the help! In a simple LCR circuit with a variable capacitor, how would I go about detecting the change in capacitance and ...
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1answer
52 views

3.3V to 5V logic converter using p-channel mosfet

I am trying to convert a 3.3V logic signal to 5V logic signal. I am using a p-channel MOSFET and I can not get it to send the full 5V signal through. Below is the circuit I am using.
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2answers
72 views

Making higher amperes using the DC volts? [closed]

I have hear, but am not certain that this is true because I find it impossible( I'm only a junior in highschool been working that electronics with my teacher for about 4 years) but anyway, supposally ...
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0answers
32 views

Check the ADC internal Atxmega32E5

I am trying to use the ADC internal to the microcontroller Atxmega32E5. Hereafter there is the code for take the converted value from one channel of the ADC. Could you please suggest me an easy way ...
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2answers
71 views

unknown component in datasheet

im using xl6009 dc to dc converter , in page no 7 of datasheet the sepic inverting topology is show which generates 12 and -12v .my doubt is what component is used, is it a transformer or coupled ...
4
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1answer
110 views

What's an efficient way to get below the standard 1.25V on buck converters?

So, I purchased a buck converter which was advertised to be able to range down to 0.8V but, as you can probably guess, it only goes down to 1.25V which I understand is the reference voltage for the ...
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2answers
42 views

2 state converter, from -24VDC [ON] - +5VDC [OFF] to 5VDC [ON] - 0VDC [OFF]

So as the header says, I would like to take a 2 state signal (ON/OFF) where the on state is -24VDC and it's off state is +5VDC and make that/convert to a 0-5VDC 2 state signal, where 0 is the ...
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1answer
49 views

Connecting a bare condenser microphone to a RCA cable

I just bought a condenser microphone for direct PCB placement (i call it a bare microphone), I know it resists based on air vibrations (sound). So how could I connect it's 2 pins to a RCA (red white ...
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1answer
86 views

Convert 24V dc to negative 24V dc [closed]

My circuit is supplied by a 24V DC generator, but I have amplifiers in my circuit that need to be supplied by 24V and -24V, so I need to generate -24V dc from the 24V that I have from the generator,...
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1answer
67 views

converting an analogue signal to be viewed on a 7 segment display

How do I convert an analogue signal to a digital signal and display it on 7 segment LED's. This must be done without using any programmable micro-controllers. It's for a school project. The analogue ...
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1answer
111 views

Where are Ćuk converters

According to "the art of electronics" (p 651) and other internet sources, the ćuk switch converter has the most desirable properties: continuous input and output current waveforms, boosting and ...
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1answer
109 views

Issue in High side Mosfet in bidirectional Buck Boost Converter?

i am making bidirectional buck-boost converter. The schismatic of bidirectional buck boost converter is attached here. Buck Mode = when PWM is applied to Q1 , it work as buck converter. when q1 is ...
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2answers
133 views

Why does my new 220V AC to 12V DC transformer only allow one Halogen light to work? [closed]

I'm trying to revive an old Ikea "Trettio" lighting set. The set is made up of a 220V to 12V transformer and 5 Halogen lamps connected to it in parallel. Remembering that the original transformer was ...
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5answers
115 views

What circuit I need to lower 20MHz 3.3-0V square wave to 0.01-0V square wave for very low load driving? [closed]

My FPGA board outputs the 3.3-0V square wave at 20MHz. I need to convert it to 0.01-0V square wave to drive the very low load (0.1 Ohm). What kind of circuit I need and Is there anything I need to be ...
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2answers
48 views

Understand boost converter's voltage conversion ratio

Below is a boost converter with its inductor current waveform operating in DCM. The voltage conversion ratio of the converter is as follows: M(D1,D2) = V/Vg= 1 + D1/D2 where V and Vg are output and ...
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1answer
49 views

Fried TPS61030PWP

I have constructed the circuit below which I put together based on the datasheet. I am testing this circuit using a bench power supply. I have tried 1.8V and 2.7V supplies. With no load or a resistive ...
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0answers
26 views

getting a sine wave in order to test a capacitor/inductor from full bridge dc dc converter

I would like to get a pure sine wave from full bridge dc-dc converter by filtering the pulse wave output of dc dc converter. Is it possible to add a LC filter (first order or second order) to get a ...
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0answers
85 views

12VAC to 12VDC Converter Requirements for RGB LED Controller

I have an outdoor lighting transformer (operating at the usual 12VAC) that I want to add a strip of LED lights in a new run. The transformer has two legs, each ...
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2answers
106 views

Which component is this?

I salvaged a few components like that from some old ISA Ethernet card (10Base2 + 10BaseT combos), many years ago. If my memory doesn't fail, those boards were replaced by 1995, I kept them, and ...
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2answers
66 views

Question on LM2577

I have a hard time fully understanding the datasheet of LM2577. I bought this product that has a LM2577 in it and the specifications indicated by the seller that it can have a maximum output current ...
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3answers
120 views

Buck-Boost converter question

I have a school task for creating a Buck Boost converter that takes 12V and outputs -48V. I have done some digging and couldn't find my answer since I could only find converters that give a number ...
0
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1answer
104 views

3 phase AC Voltage controller question

Hello I have a question regarding the operating characteristics of 3 phase AC voltage controllers, the images describe the relation in between Van and (VAC,VAB,VBC) The last image shows the resulting ...
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1answer
49 views

DC motor temporary speed change with simple Boost Converter

I would like to know is if it is possible to give a slight voltage change to a dc motor with simple electronic items. Meaning that the voltage would normally be a set amount (10v) but would either ...
0
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3answers
116 views

Use a microwave motor to power LEDs

I have an AC motor that came from a microwave turntable on the back it says 120v 2w 6rpm. I would like to use it as means to generate some electricity. I have a full wave bridge rectifier to convert ...
4
votes
2answers
104 views

Advice and critical remarks regarding the manufacturing of a DC-DC step-down converter

I'm in the third year of my electrical engineering major and I want to take things a bit further than the usual analogue electronic circuits I've studied thus far by making a DC-DC step down converter ...
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1answer
49 views

Can a wind turbine full-scale converter absorb active power?

Is a full-scale converter of a wind turbine type 4 capable of absorbing active power? If it is possible, where would this power be dissipated? If yes, where would this active power go, in the ...
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1answer
53 views

Will a 110-220v to 12v converter work with a DC 12v 3w LED bulb? [closed]

I'm planning to create some wall lights using these LED bulbs. Would I be able to just use any 110-220v to 12v converter to power this at home? I live in the US (120v). I was thinking of using this ...
0
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1answer
84 views

Bipolar Voltage to Current Converter

I need a circuit or component which converts bipolar voltage to bipolar current. I have found the XTR111 from Texas Instruments and the 1B22 from Analog Devices. However, they only convert 0-10 V to 0-...
0
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1answer
52 views

Rc car, power supply instead of alkaline battery?

I have an RC car which works with 8 AA alkaline batteries, which make a total of 12 volts. I want to replace the battery with a 12v 2A power supply (batteries cost away too much...) Do you think the ...
1
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2answers
68 views

Supercapacitor Voltage Draw

If I am charging a super capacitor with buck converter, that is a 1 amp, 1-18 volt output, and the capacitor is rated for 2.5 volts, how do I stop the buck converter from feeding it more than 2.5 ...
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1answer
51 views

Buck converter is stuck at a certain voltage?

We are currently building a buck converter (see below). Values of components: Capacitor: 15 micro Farad Inductor: 1.41 milli Henry Mosfet: N-mosfet Resistor: 330 ohm Problem: When applying a 15 ...
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2answers
51 views

Voltage increase per cycle across capacitor for a boost converter

So I'm looking to make a high voltage capacitor charger using a boost converter and I'm wondering how much voltage the capacitor will increase per cycle of the boost converter. In reality, I would ...
0
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4answers
290 views

Can I use a DC-DC buck converter with an arduino

I'm just starting out with electronics and arduinos, but I want to ask if i'll be safe using an LM2596S DC-DC step down buck converter as the regulator for my arduino project? I have a few to hand ...
0
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1answer
71 views

Step up converter for electrical motor, 110V to 230V

Wasn't being careful when purchasing a vacuum pump for silicone de-gassing so I ended up with an american standard. (I live in sweden) Tried to search this but with limited knowledge comes limited ...
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3answers
130 views

Does a boost converter lower the source current of a solar panel?

I am trying to build a solar powered phone charger using small size solar panels. I have two solar panel connected in series, each of them are 4 V and 50 mAmps. When I connect the solar panels to the ...
0
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1answer
42 views

Calculating the time for current reducing to zero from a charged inductor in a series LC circuit

I'm wondering how you calculate the time taken for the current in a charged inductor to reduce to zero with the only current path being through a capacitor. I'm looking at this from the perspective of ...
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2answers
102 views

High Current DC Power Supply

I'm attempting to build a compact way to charge six laptops (of the same model) so that I may avoid using six individual power cables. I'm trying to make it cost-effective yet safe. My initial design ...
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1answer
116 views

VHDL to Verilog conversion for Parking Sensor

I am trying to do parking sensor with verilog and I have its vhdl code and trying to translate it to verilog can you please help me to find out what is my problem. There is no error the error is only ...
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1answer
65 views

DC to AC converter

I know there are lots of circuits that do this, but I need to design a circuit that has a DC input and a square wave output by using any of these components: capacitors, inductors, OpAmps, resistors, ...