These are part of AC to DC conversion. A half-wave rectifier keeps only the positive part of the signal. A full-wave rectifier also keeps the negative part, but flips it to make it positive too.

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41 views

How big does the Schottky Barrier or Band Offset have to be for a junction to be a diode?

Current rectification happens when there is a large Schottky Barrier or a large Conduction band offset (excluding cases such as tunnel diodes). My question is, how large (in electron volts) does the ...
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0answers
29 views

Operating frequency of RD15VHF1 and 1N5822

I am currently building an inverter circuit and a rectifier circuit. I proposed to use RD15VHF1 and 1N5822 in the circuit because my target is to operate the circuit in the range 500kHz to 1.5MHz. In ...
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2answers
643 views

Trouble with rectifying a pulse with a diode

I'm trying to obtain a pulse from a square-wave of a function generator. I thought it is an easy straightforward thing. So in this case the square-wave is +5V to -5V. I use a 1N4001 diode and a 220 ...
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2answers
39 views

Charge a 6S Li-ion pack with a boost converter

Hi fellow makers and engineers, I'm trying to charge a 6S Li-ion battery pack (6 NCR18650B cells in series) using a rectified DC voltage of 16 Volts and boosting it to about 25.2V to charge the pack ...
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65 views

120v power supply section 220v adaptation

I'm building a very simple tube overdrive, power supply section of the schematic can be seen above. as you can see the circuit has been designed for 120v. I will be dealing with 220v instead of 120v, ...
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139 views

calculate FFT based on an oscillogram

Hi, I'd like to understand the context in between an oscillogramm and the resulting FFT. My example is a full-wave rectifier and I am try to calculate some harmonics. Because the function is ...
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1answer
58 views

Vgs and semi-active rectification

simulate this circuit – Schematic created using CircuitLab I'm new to the world of mosfets and am trying to learn them better. Would this rectifier IC be safe for input voltages of 24V if Vgs ...
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2answers
360 views

Bridge Rectifier Attached to DC input

I was taking apart an old game-show buzzer system (like something they might use on Jeopardy) and I was confused by the a particular section of the circuit board: I'm pretty sure the circular ...
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1answer
80 views

LC Filter for a Full Wave Bridge Rectifier?

According to what I've read on a few websites and PDFs (http://www.irjes.com/Papers/vol2-issue6/Version-1/E02064249.pdf is an example) using an inductor-capacitor filter to assist AC to DC ...
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5answers
89 views

Low-voltage rectification

I have a 19kHz square wave line-level audio signal (~2Vpp) that I hope to rectify in order to drive an infrared LED at 38kHz. So far, I've been using a pair of LEDs, wired in parallel in opposite ...
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1answer
47 views

3-Phase Permanent Magnet Alternator with Regulator/Rectifier (SCR) Output Waveform

So I've been troubleshooting some electrical problems with a motorcycle charging system, and I need a little assistance understanding the output waveform: Per an article (which I don't have enough ...
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1answer
29 views

Can I use barrier rectifier as a diode in bulk converter circuit?

I have this LC circuit which will work under 12V and quite high load (10-20A): The diode D1 must be a shottky diode but the only similar thing I have at the moment is actually 3-leg MBR3045CT ...
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2answers
75 views

Wave rectification

I'm just a bit confused about what is actually happening when a wave goes up and down. It's a graph of voltage vs. time, so therefore wouldn't that mean the voltage was going up and down constantly? ...
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1answer
34 views

synchronous buck converter with different MOSFETs

do you know if it is possible to use different type of MOSFETs in a syncronous buck converter for the hi-side and the low side switch? How does this improve the converter efficiency? Thank you
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1answer
55 views

What is a capacitor ripple current?

Suppose I have a simple full wave bridge rectifier, with resistive load. Is capacitor ripple current a charging or discharging current? Or maybe it is an avarage/RMS of any current flowing through a ...
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2answers
41 views

Limit voltage/current of bridge rectifier

Assume I have a small bicycle generator which usually feeds the front and back LED/light bulbs. Powering a small gadget from this generator should well be possible. The setup would involve a full-...
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1answer
59 views

Half bridge and full bridge control rectifier [closed]

Why do we use 2 SCRs and 2 diodes in a half bridge control rectifier and 4 SCRs in a full bridge control The image above shows a half bridge control rectifier Full bridge control rectifier ...
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1answer
258 views

Voltage regulator using bipolar NPN transistor

I came across a circuit, and I got some questions about it. What is the reasoning behind using the NPN-transistor? What part of the circuit draws the most current?
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1answer
115 views

What is the difference between rectifier/signal diode and zener diode?

I need to caution: I'm absolutely beginner in electronics! :) I'm stacked with the difference between rectifier and zener diodes. I've already read all the answers at https://www.quora.com/What-is-the-...
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2answers
120 views

Rectified differentiator problem

I have a problem working on Lab 3-5 from Horowitz's Students Manual for The Art of Electronics. The circuit is like that: The author suggests compare the RC time constant of two version of this ...
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1answer
68 views

full wave rectifier is not rectifying the wave properly

the following rectifier does not create a wave that is rectified evenly. according to the books this should work when using a centre-tap transformer. scales : (Y = 10ms/div) & (X = 5V / div) ...
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3answers
97 views

How can I know the rated current of a 6v transformer?

I've an old bulk transformer. It is 220V/6V. I Connected it to the basic rectifier circuit with a voltage regulator (7805) so that the output voltage is 5V. The transformer produces about 8V DC ...
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2answers
94 views

Is this an RC filter in the circuit for a nightlight?

So there is this nightlight (a little flower that you plug in directly into a mains socket and switching it on gives you some light to light up your bedroom at night) which I dismantled and tried to ...
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1answer
107 views

Where do I put capacitor in my diode bridge AC to DC circuit?

I want to make a AC to DC converter, the seller give me these: KBP307 diode bridge 2a104j capacitor And a 470uF 50V capacitor. All I can find on the internet only use one capacitor or two ...
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3answers
463 views

Schottky barrier diode as a bridge rectifier?

I need a bridge rectifier for my project and the diodes I currently have can only handle up to a maximum of 1 amp which is not enough. But I have a bunch (YG862C15R) - datasheet. Can I somehow use ...
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58 views

Questions about a basic power supply

What is the difference between the peak voltage and the rms voltage? In our country, the standard voltage in houses is 220V AC. Is it peak or rms? In the rectifier (I use full-wave bridge rectifier), ...
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69 views

Amperage before and after rectification

I recently received a variac variable ac transformer. It is a older model so I decided to modify it a bit. I will add analogue amp and volt meters to show what the "current" out put is(pardon the pun) ...
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67 views

Non-rectified Voltage output across the capacitor

So I am testing my PZT Piezoelectric material's Voltage output across a Capacitor of 1000uF after converting AC to DC using an Oscilloscope. Oscilloscope model: Gwinstek GDS-2102. The diagram is my ...
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2answers
92 views

Max diode current half wave rectifier

simulate this circuit – Schematic created using CircuitLab Given a half wave rectifier composed of a sinusoidal source with peak voltage \$V_p\$ with freequency f, diode, parallel to load ...
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1answer
57 views

How do I keep a square wave output voltage high for a TTL application?

I am passing an AC signal (24 Vrms at 1K Hz) down a line through a diode of unknown bias. Due to uncontrollable variables in the environment, there are 4 possible outcomes: Positively Rectified -> ...
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1answer
139 views

How to add a capacitor and switch correctly to piezoelectric circuit?

Am a hobbyist beginner with no prior electrical engineering knowledge (though can follow a basic circuit), so please bear that in mind when giving your valued advice! am following an instructable to ...
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1answer
147 views

How to measure the efficiency of a full wave rectifier?

Given a full wave rectifier (http://www.electronics-tutorials.ws/diode/diode_6.html) with an RC filter on the DC output, how can I measure the efficiency of conversion? simulate this circuit &...
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1answer
94 views

BLDC generator output current

I'm using the following BLDC motor as part of a project to generate power: http://www.rcdude.com/Cobra-C-3520-18-Brushless-Motor-p/c-3520-18.htm I'm able to spin this motor to about 3000 RPMS which ...
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2answers
151 views

Why do offline switching converters often use discrete rectifiers for bridge?

In conjunction with my independent study of switching converters using textbooks, I am more or less obsessively tearing apart all the low-ish power (say 5 - 25 Watt) switching converters I can find. I'...
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1answer
147 views

How can I observe rectifier switching noise?

I understand there is such a thing as rectifier switching noise. I would like to observe it on the bench, but I don't understand its causes well enough to design a test setup. Once in hand, I'd like ...
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623 views

Is a half-wave rectifier particularly hard on a transformer?

In the book Practical Electronics for Inventors, 3rd Ed., the authors recommend against using half-wave rectifiers because they're inefficient and cause "...the core to become polarized and to ...
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88 views

Where from the second half-wave of rectified voltage comes in full-wave rectification?

I know it may be sounds silly! But I can not figure out where from it comes - the second half-wave (let's say positive) in full-wave rectification. Is there any key to understand it? I mean: there is ...
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3answers
180 views

How to: The basics of transformer VA calculation for voltage regulation using full wave rectification

Likely this procedure has been repeatedly discussed here. But I want to put the pieces together in this certain domain. So let's say we need to get +/-12V at the outputs rated at 1A using classic ...
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4answers
112 views

What is capacitance required for this 3 phase rectifier

In the diagram above I want to know the value and the rating of the capacitor that should be used for good rectification The Line to Line voltage is 400 , and by relation Vdc =(3√2 VL)/pi=(3√2 x ...
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3answers
99 views

Vpp for American split-phase 110V AC

I know the 'nominal' voltage of 110/115/120 is both based on Vrms and that stability @ any of those levels is pretty much a fairy tail. I also know that most rectifiers will output ~130-150V after re-...
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1answer
63 views

LTSPICE Bridge Rectifier - Odd Output

I'm trying to simulate a simple full wave rectifier in LTSPICE. The output I am getting is not what I am expecting. In the picture below, the green line is the voltage output from the + terminal of ...
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2answers
146 views

Why do we need to rectify or amplify the current/voltage? [closed]

I am a beginner in Electronics. What i read now a days in my text book is about diodes,transistors etc. They are used for some rectification and amplification etc ? I wonder why do we need to give ...
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1answer
263 views

Why would someone prefer halfwave rectifier over bridge rectifier? [duplicate]

The other day, out of curiosity I was measuring the current wave shape of a laptop charger. The wave shape indicated a spike only in one half cycle. I'm guessing half wave rectifier here. One thing ...
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votes
2answers
151 views

Why is the power supply terminal is not connected to ground in this bridge rectifier?

Above is two identical bridge rectifier circuits. Input is a 12V sinusoidal voltage source. Red is the source. Blue is the output from the circuit on the right side. Green is the output from the ...
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1answer
38 views

Sensitive AC detector circuit

I built a field mill based on this video link. This device generates a sine wave, where I am interested in the amplitude. Once i have the peak, or average value (does not matter, but average would ...
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1answer
98 views

Bridge Rectifier questions

I need to build an ammeter circuit for a model train layout. I want to use an analog ammeter (I just like the look of them) but I have to do some special stuff because DCC (the control system for the ...
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1answer
486 views

Why such low voltage across my filtered half-wave rectifier?

Essentially my problem is this: I built a simple half-wave rectifier with some capacitive filtering, but I can't account for why my voltage is so low. Below is the circuit I built: Vs is 5V ...
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879 views

Full wave rectifier vs full wave bridge rectifier

What is the difference between the full wave rectifier and the full wave bridge rectifier? In other words what do we gain if we use the bridge? As far as I know both do the same thing while the bridge ...
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2answers
214 views

Amplify the signal from ACS712 to adc

I am trying to amplify the signal from ACS712 to read it better. The problem is that I am using an 8-bit ADC, and what I want to take measure are things like energy-saving lights, or other things with ...