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

0
votes
2answers
33 views

AC to DC wall adapter circuit

I'm trying to design an ac to dc conveter (230V ac to 12V dc). Haven't decided on the current yet. It's likely to be around 2A. I want the circuit to be compact and hence I think it is best to follow ...
3
votes
1answer
74 views

What is the difference between the LT1054 from TI & the LT1054 from Linear Technologies, other than price

The following has me puzzled: The specifications on the datasheets of the LT1054 from Texas Instruments appear the same to me as those of the LT1054 from Linear Technologies. In Europe the TI LT1054'...
1
vote
1answer
51 views

How to select the right Operational Amplifier as an impedance converter?

I have a receiver circuit that is magnetically coupled via a parallel resonant circuit with the sender (similar to RFID but just one directional). I want to feed the signal into an ADC which has, ...
0
votes
2answers
31 views

What products which support 110V/60Hz you can use in Europe with a power converter to 110V/50Hz [closed]

I was wondering what products which only support 110V/60Hz you can use in Europe with a power converter from 230V/50Hz to 110V/50Hz. In what product the different frequency will be a problem ? and in ...
3
votes
2answers
116 views

Not getting stable voltage output with DC-DC Buck Converter

Coming from a computer science background, I'm new to electronics and my first post here. I'm working on a hobby project with the intention of designing a PCB eventually and the first step is to ...
0
votes
0answers
30 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 ...
0
votes
1answer
76 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 ...
0
votes
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)....
4
votes
2answers
186 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. ...
-1
votes
1answer
96 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 ...
0
votes
2answers
46 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 ...
0
votes
2answers
48 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(=...
-1
votes
4answers
91 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 ...
-2
votes
2answers
277 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:...
0
votes
3answers
108 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 ...
0
votes
1answer
57 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.
-4
votes
2answers
74 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 ...
0
votes
0answers
42 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 ...
0
votes
2answers
72 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
votes
1answer
114 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 ...
0
votes
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 ...
-2
votes
1answer
51 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 ...
-1
votes
1answer
89 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,...
-3
votes
1answer
68 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 ...
5
votes
1answer
118 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 ...
-1
votes
1answer
115 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 ...
0
votes
2answers
183 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 ...
0
votes
5answers
116 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 ...
0
votes
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 ...
0
votes
1answer
51 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 ...
0
votes
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 ...
1
vote
0answers
90 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 ...
1
vote
2answers
110 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 ...
0
votes
2answers
77 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 ...
3
votes
3answers
122 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
votes
1answer
116 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 ...
0
votes
1answer
55 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
votes
3answers
125 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
105 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 ...
-2
votes
1answer
50 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 ...
-1
votes
1answer
54 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
votes
1answer
93 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
votes
1answer
54 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
vote
2answers
69 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 ...
-2
votes
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 ...
0
votes
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
votes
4answers
351 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
votes
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 ...
0
votes
3answers
139 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
votes
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 ...