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Questions tagged [rectifier]

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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How do half-wave RF rectifiers manage efficiencies above 50%?-A theory

First off, this exact question was directly asked here EDAboard and I think it was hinted at in atleast two other posts on this exchange programmingEnthusiast, frick, by Andy AKA, who mentioned a 100% ...
Ne612we's user avatar
4 votes
4 answers
2k views

I made a 3-phase power rectifier circuit with "ideal" diodes. Is there anything I should change?

I made this 3 phase power rectifier with ideal diodes, instead of actual diodes. I basically just copied an ideal diode diagram and pasted it 6 times. It's for use on a wind turbine project, to ...
soconnoriv's user avatar
1 vote
1 answer
76 views

How to make an ideal rectifier which can efficiently rectify 3 phase AC for power applications? [closed]

I'm working on a wind turbine project which needs to be able to rectify 3 phase AC with varying voltages. The lowest the input voltage will likely be is 2V, while the higher end will be 27V. I've been ...
soconnoriv's user avatar
0 votes
0 answers
58 views

Why IC 7805 is not working with Piezoelectric element as a 5V Voltage regulator? [closed]

I tried to make a Piezoelectric Generator consisting of Piezoelectric buzzer disc. I rectified the output voltage to DC voltage and tried to regulate it to 5 volt using IC7805 with capacitors, but it ...
ARGUELLES ANGELO's user avatar
1 vote
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How do I understand the reason behind the incorrect result in below LTspice simulation?

Shown below is the LTspice simulation for a full bridge rectifier. The simulation shows 'wrong' result for open load condition (Rload =1 GΩ). Ideally it should be same as other 2 cases. Why is the ...
Dynamic_equilibrium's user avatar
-4 votes
2 answers
190 views

Which is better - series or parallel rectifier? [closed]

The idea for this question gave me the question Understanding positive and negative rectifiers. Here I want to summarize the ideas behind the two circuit configurations - series and parallel, hoping ...
Circuit fantasist's user avatar
1 vote
2 answers
128 views

Understanding positive and negative rectifiers [closed]

How is the first circuit a negative rectifier? My thought is the current flows forward so the diode turned into a short and Vout is postive, and if current is reversed then the diode blocks the flow. ...
essentialnotebook's user avatar
3 votes
4 answers
141 views

MOSFET Driving for a Dump Load Resistor within a wind turbine

I am currently designing an AC-DC rectifier for a 6 kW small-scale wind turbine. As part of this setup, I intend to integrate a dump load resistor to regulate overvoltage. When the DC voltage reaches ...
Jasper's user avatar
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1 vote
2 answers
55 views

Determining the region of operation of these two diodes

I'm having trouble determining the region of operation for these two (ideal) diodes. Do I check the Vopencircuit values or their current values?
user364328's user avatar
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36 views

Troubleshooting Vacuum Roller Motor

I am trying to repair a vacuum so that the carpet roller will work again (motor does not run). I have disassembled the head of the vacuum and found what is probably a fairly simple electronics board ...
IronJaguar2276's user avatar
1 vote
2 answers
69 views

24 VAC signal rectifier and detection

One of my projects consists of recovering a 24 VAC signal to give a run command. To avoid using a relay with a 24 VAC coil I would prefer to convert the 24 VAC signal into a DC signal and use an ...
Benito's user avatar
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Would an AC EMI filter capacitors contribute to inrush current?

Shown below is an EMI filter for an AC input. My doubt is when I analyse the inrush current, should I be considering the contribution due to all three capacitors? a) Differential mode capacitors b) ...
Dynamic_equilibrium's user avatar
1 vote
2 answers
109 views

Why do reversible connectors duplicate pins versus just rectifying the inputs?

I understand that some reversible connectors already rectify symmetric power pins (not USBC.) Generally all data moves over balanced pair wires. Couldn't the balanced pairs also be simply rectified? ...
J Collins's user avatar
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1 answer
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What is wrong with below circuit simulation of RC filter with rectified AC input?

I am trying to find the average rectified AC output from a bridge rectifier output and the simulation results do not seem to match with the theoretical calculations well. Should n't the RC circuit act ...
Dynamic_equilibrium's user avatar
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1 answer
150 views

Explanation of the circuit diagram of a PIR sensor activated light

Can someone please explain the operation of this circuit diagram of a PIR sensor led light. The high voltage "ground" connections in the original diagram have been replaced with connections ...
Francis Lapaba's user avatar
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0 answers
28 views

Using BTN8962TA to implement 3 phase synchronous rectifier

I want to use three BTN8962TA (datasheet) to implement a 3 phase synchronous rectifier. The input will be a BLCD motor used as a generator. The current at each phase will be measured with external ...
MarcoM's user avatar
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1 answer
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Modify or adapt a device using low-voltage AC to accept DC

A few years ago, a family member asked me to look at a set of bookshelf speakers that stopped working. Inside I noticed obvious signs of a cooked component on the internal power supply, which was a ...
Jamesfo's user avatar
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2 answers
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DC Load Current Vs RMS Load Current in single phase half wave rectifier

While solving a problem of a single wave half wave rectifier. using an "Ideal Diode" Given Details: Load Resistance - 1020 Ohms Supply - 230V 50Hz AC (Connected in series) To find : DC ...
Anirudh Srikanth's user avatar
2 votes
2 answers
136 views

What is the average value of current in uncontrolled rectifiers with rl Load

I am trying to calculate the average value of a current in single phase rectifier half wave and in the full wave with RL Load. The thing that I am finding interesting is that in all the tutorials and ...
Badr Eddine's user avatar
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0 answers
93 views

Full wave rectifier 2nd and 4th waves doesn't go up as it should [duplicate]

I'm using four 1N4007 diodes and one 15k resistor. I already changed diodes and cables dozens of times, it doesn't change, even I change the oscilloscope or arbitrary function generator, nothing ...
Hereforasking's user avatar
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51 views

Simulating a controlled rectifier with CMOS , using Isis Proteus

I am currently in the simulation phase of a controlled rectifier, and I must use CMOS technology. However, I am a novice in this field and would appreciate detailed advice to help me get started. ...
Manar HIMEUR's user avatar
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2 answers
74 views

Full wave rectifier behavior

This is a center tapped full wave rectifier. From my understanding if D1 = forward bias and D2 = reverse bias during the positive cycle of AC, why does VD1 from the graph show 0 voltage during the ...
Ashytone's user avatar
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0 answers
30 views

MAX4053 IC, V+ & V- , suitable dual diode

On the PCB of a multimeter with MAX4053, V+ & V- is from external dual diode, please tell what type of diode it must be. A screenshot from the MAX 4053 datasheet is attached. Need the type of the ...
Khalil Mohammad's user avatar
1 vote
3 answers
109 views

Can a capacitor of lower capacity than required be harmful?

I want to make a full wave rectifier for my highschool physics project. My mentor suggested I get a 24V 1000μF for it but I could only get my hands on a 50V 100μF capacitor. The voltage supply is a 9-...
iCarry's user avatar
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2 votes
2 answers
241 views

Exploding/superhot capacitor in XT AC-DC PSU

I have a commercial replacement PSU that I am using for a vintage XT class computer which has 4 DC lines (5v, 12v, -12v and -5v). On fitting the PSU however, the PC operated but after a while under ...
Willinliv's user avatar
1 vote
0 answers
142 views

Square wave rectified output value calculation

I can understand the ground osc probe but with a hand osc I shouldn´t have that problem, I think. But It went even worst. Maybe it is a doubler¿?
XanDasXuras's user avatar
1 vote
0 answers
64 views

Component identification from ATV regulator/rectifier

I'm trying to identify this component from an ATV regulator. It looks like a semi controlled rectifier? I am trying to look up the datasheet.
Geo Pojar's user avatar
1 vote
3 answers
92 views

Transistor specs in the capacitance multiplier

I'm working on a constant current power supply and as a first step designed the following rectifier with a filter. I know the bottom rectifier is inactive, but with couple of switches the circuit ...
beardeadclown's user avatar
2 votes
3 answers
1k views

The output of my rectifier which should be charging a capacitor on LTSpice is extremely jumpy and inconsistent

For some reason, every time that I include a capacitor in this circuit LTSpice transient analysis is very jumpy. Is there a better way to use the output of a bridge rectifier for this purpose? I tried ...
Alex Heinle's user avatar
1 vote
1 answer
76 views

Valve amp power supply filtering with centre tapped transformers

I am designing a valve amplifier and am planning to use GU50 output pentodes in the power stage (PP). They can take up to 1kV on the anode but have an upper limit of 250V on the screen (which also ...
Oliver Gardiner's user avatar
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1 answer
117 views

DC Voltage Across Load in Central Tapped Full wave rectifier

A 230 V, 60 Hz voltage is applied to the primary of a 5:1 step-down, center-tap transformer use in a full wave rectifier having a load of 900 Ω. If the diode resistance and secondary coil resistance ...
user avatar
1 vote
1 answer
242 views

Testing out a bridge rectifier if it works with only a multimeter

Indulge me here with this scenario, but suppose the electronics shop I'm sourcing parts have dubious, faulty semiconductors parts -- damaged, counterfeit, etc. What have you. How do I test if a bridge ...
Tempus Nomen's user avatar
0 votes
2 answers
207 views

Peak to peak voltage

What is the formula to calculate the peak to peak voltage at the input of 7805 voltage regulator/at the output of 10 microfarad capacitor in this circuit? https://theorycircuit.com/7805-ic-circuit-...
Alex's user avatar
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5 votes
2 answers
1k views

What is this component? It looks like a rectifier with 149k as identifier

It looks like a rectifier with "pec" as manufacturer and 149k as identifier. I am trying to look up the datasheet.
user avatar
2 votes
3 answers
610 views

What is the difference between these two circuits?

Here I have a circuit for a full-wave bridge rectifier with capacitor filtering. And here is another circuit with two filter capacitors. What effect does the second filter capacitor provide?
spinachpizza_'s user avatar
1 vote
2 answers
92 views

Identifying faulty component in AC-DC regulated PSU

I'm debugging this faulty AC-DC power supply circuit, which is meant to output 24 V DC from a 240 V AC supply. The 24 V line is actually about 10.1 V under load. I have tested ZD1 and ZD2 which seem ...
nasci's user avatar
  • 13
2 votes
1 answer
508 views

Why is this precision rectifier circuit not producing a perfect output?

Can someone explain to me why this precision rectifier circuit isn't fully rectifying the signal? It seems to work well until the crest of the non-inverted sine wave signal. I've been trying to ...
Eli Y's user avatar
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0 votes
1 answer
32 views

U16C60D - Dual Series Connection Rectifier

I can't find any replacement for the U16C60D rectifier. It is possible to put two seperate diodes (each at 8A/600V) in series like the "U16C60D" or inside the component it is not only just a ...
2 X's user avatar
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0 votes
3 answers
379 views

General formula for the ripple voltage in a loaded bridge rectifier

What is the general formula to calculate the peak to peak ripple voltage and Vdc average of the voltage at the input of the 7805 voltage regulator in a circuit like this? Suppose the load is a fixed ...
Alex's user avatar
  • 1,518
0 votes
2 answers
97 views

Input capacitors to the 7805 voltage regulator [duplicate]

What is the purpose of the 1000 µF and 0.22 µF capacitors at the input of 7805 voltage regulator? Input to these capacitors is the rectified pulsating DC voltage. What will be the shape of this ...
Alex's user avatar
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1 vote
1 answer
146 views

Input and output voltage of 7805

In the diagram below the input voltage to the ic 7805 is the output voltage of the capacitors (1000 micro Farad and 0.22 micro Farad). The peak voltage arcoss the input of ic 7805 is the same as the ...
Alex's user avatar
  • 1,518
1 vote
0 answers
103 views

Is this a valid way to determine which diodes are on in an op-amp based rectifier?

Consider the circuit above, where we are treating the diodes as ideal. Let's take the case where Vs < 0. Since V- = V+ = 0 for both U8 and U9, that automatically means the current is to the left ...
Adam Herbst's user avatar
0 votes
0 answers
223 views

What is the formula for ripple factor of the filters?

In some books I find the formula for the ripple factors of filters (like LC and RC) to whome rectifier are connected at input as Ripple factor = Vr.m.s/Vdc While in other books Ripple factor = Peak to ...
Alex's user avatar
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0 votes
1 answer
159 views

Rectifier output voltage in RC and LC choke input filters

Why does the choke input filter produce a DC output voltage equal to the average value of the rectified voltage given as input to this filter, while the capacitor input filter produces a DC output ...
Alex's user avatar
  • 1,518
1 vote
4 answers
182 views

LTspice LED night light voltage problem

I am trying to simulate an LED night light circuit using LTspice. I want to measure the voltage of C2. The C2 voltage is supposed to be 12 V (based on the textbook), but when I try to simulate the ...
SmartWallet3000's user avatar
1 vote
1 answer
323 views

PIV in full wave bridge rectifier vs. full wave rectifier

I know that in a full wave rectifier the PIV of the diodes is 2*VP, whilst in a full wave bridge rectifier we have just Vp. It is also said that the bridge configuration is more suitable in ...
aghin00's user avatar
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3 votes
2 answers
454 views

How can I calculate the peak to peak ripple voltage of a rectifier circuit with an LC filter?

What is the formula for finding the peak to peak AC ripple voltage across the load resistor for this LC full wave bridge rectifier circuit? The rectifier output is a pulsating DC voltage which has ...
Alex's user avatar
  • 1,518
4 votes
3 answers
230 views

Fullwave rectifier with active clamp

What is wrong with my simulation? I am simulating with LTspice the following circuit taken from "Art of Electronics 3ed" where my LTspice model looks as follows: What am I doing wrong as ...
abg1984's user avatar
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0 votes
0 answers
54 views

Buck / Buck Boost converter as a regulator or rectifier question

I have an older boat with a rectifier like https://www.ebay.com/itm/282755134541 . I understand that these will output 14-17V+ DC. With an increase in RPMs, I understand that the DC voltage increases. ...
Colin Williams's user avatar
0 votes
1 answer
256 views

Frequency of pulsating DC

If frequency is the concept bound to pure AC waveforms then why is it said that pulsating DC has a frequency? For example, it's said that the output frequency of the full wave rectifier is double the ...
Alex's user avatar
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