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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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13.56 MHz on chip wave rectifier [on hold]

I am designing a bioimplantable device for brain stimulation. I need a wireless power transfer system using a magnetic coupling between two coils. I need to design the receiver and I would like to ...
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Tripping a circuit breaker when using a half wave rectifier

How does a half wave rectifier or phase control dimmer affect the triggering of a circuit breaker? For example, if a 20A resistive load was on a 15A breaker with a half wave rectifier. Now average RMS ...
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46 views

Limiting maximum voltage

I can't seem to find an answer to this, or the answers available are too advanced for me to understand. I have an AC source 0VAC-40VAC. I also have a buck converter rated at 6VDC-24VDC input, and 5V ...
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82 views

Diode rectification

Why don't I use this circuit for full wave rectifier instead of Bridge rectifiers or Center tapped transformer type rectifiers?
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52 views

Confused on when to use RMS current or voltage in calculations (regarding rectifiers)

For question a, why is the power absorbed by the DC source : P=Vo*Io However, for the same exact question, the power absorbed in the resistor is P = (Irms)^2 * R Hence when do we use RMS current/...
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101 views

AC water turbine

I am trying to use a water turbine from China to charge a lithium ion battery. The water turbine is rated to 10 watts. I figured that should be enough to charge the battery but I can only ever get ...
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52 views

Selecting RC filter components for half wave rectifier

I have a circuit where Input is a Sine pulse of 40V Amplitude and the circuit is as shown: After redtifier diode , there is a RC FILTER. I have used a tantalum capacitor and 0603 resistor. I was ...
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Can I use 1000v rectifier diodes instead of 600v rectifier diodes?

I plan on doing some wiring but the directions are asking for 1A 600v rectifier diodes. I could only get my hand on 1000v rectifier diodes and before I continue I want to make sure this is safe as if ...
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6 amp 600v bridge rectifier on a 5 amp transformer? [duplicate]

I found many different diagrams on 12v 5 amp constant linear power supplies, but some had a 10 amp bridge rectifier and some had just a 5 amp rectifier. Opinions? I apologize in advance if I have not ...
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34 views

How does this stator work?

This stator is out of a Wisconsin VG4D gas motor. Both black leads go to a rectifier. Red and white leads go to a regulator. White lead pigtail goes to ammeter gauge and on to battery. I need to ...
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68 views

What's the conduction angle for a full wave rectifier with filter capacitor?

Shouldn't the conduction angle for a full wave rectifier with filter capacitor be twice that of a half wave rectifier with filter capacitor? The conduction angle for a half wave rectifier with filter ...
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47 views

Choosing inrush current limiting resistor for a mains rectifier

I am having a trouble with a mains rectifier. Simplified schematic: simulate this circuit – Schematic created using CircuitLab Only problem I have is that R1 sometime explodes during circuit ...
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46 views

What is the difference between commutation number and pulse number in?

My question is about bridge rectifiers in power electronics. I guess the jargons are too vague, so i quote the exact definitions from my book which i don't understand at all: m represents the ...
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73 views

Measure impedance of rectifier using harmonic balance in ADS software

I am trying to use harmonic balance to find the impedance of the voltage double rectifier. After finding the impedance, I will use the impedance matching tool to find out the L matching. As the ...
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2answers
402 views

Diode datasheet reading

What is difference between single and common cathode configuration? If I want to use 2804 for rectifying, will it act as 2800? HSMS2800 https://datasheet.octopart.com/HSMS-2800-BLKG-Avago-datasheet-...
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1answer
110 views

How to select high frequency rectifier capacitor?

Can I use aluminium electrolytic capacitor after a full bridge rectifier? My operation frequency is 200 kHz with output voltage of 100 V. Based on this paper: "Analysis and Design of Load-...
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1answer
154 views

How to calculate the impedance of a rectifier?

I am working on RF energy harvesting. Now I am trying to calculate the impedance of the rectifier, in order to do the impedance matching. An antenna (50 ohm) receives RF signal (915 MHz) and finally ...
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63 views

Full wave rectification with only an antenna input?

I am designing a receiving circuit and would like to do a full wave rectification of a sine wave signal received from an antenna. My problem is figuring out how to isolate the two ground signals of ...
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34 views

Loading an AC generator with DC Chopper + resistor

We're in kind of a bind at work and looking for easiest / cheapest way to load an AC generator (Synchronous permanent magnet machine). We have access to a big 300A Mosfet module along with it's ...
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1answer
50 views

Impact of capacitor on half-wave ac to dc rectifier

I'm trying to convert 24AC from a furnace into a DC signal I can step down to power a 5 volt microprocessor. Following this blog post I bought a 1n4002 diode and a 220 uF capacitor. Then I built this ...
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Motorcycle regulator / rectifier type ID Diode vs MOSFET

Application is motorcycle regulator/ rectifiers Older ones used basic diodes The ACG output is rectified to charge batteries. When the battery voltage is high, these regulators/rectifiers short the ...
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33 views

Simplest and chepest way to provide 3.3V@150mA from power supply running at 6Vrms@120mW

I have a power supply that can provide 6Vrms (50kHz) and 130mW max (maybe a bit more). Unfortunately, for my project I need a peak of 150mA in 3.3Vdc (ESP8266) in regular basis during TX but most of ...
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131 views

Ripple in full wave rectifier

I've searched the forums but have not found what I'm looking for. The problem at hand is that I have no idea how to successfully calculate the ripple over the load in this schematic: simulate this ...
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55 views

Alternate uses for Gate Driver - Driving a Load without External IGBT or FET

What issues would one encounter by using a gate driver IC to directly drive a load instead of using it to drive transistors? For consideration would be the very affordable Infineon 2EDN752x series ...
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1answer
32 views

Vdc in ripple factor

V_p(rect) is the rectified unfiltered peak voltage V_r(pp) is the peak-to-peak voltage after filtering by a capacitor Here is a picture: V_r(pp) is given by the expression: Which I have no problem ...
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1answer
82 views

Decoding circuit with transformer topology

I am studying a circuit used for mobile adaptor, where AC to DC conversion is done through bridge rectifier ABS210. Transformer is used for isolation along with IC LP3783 (Offline PSR Driver) and ...
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2answers
86 views

Op-amp (LM358N) half-wave rectifier and 3.3V clamp

I was wondering if I could have some feedback on this circuit. The goal is to: Input up to 18VAC sine waves (possibly noisy) up to 20khz. Output 3.3V digital pulses. Minimize discrete part count. I ...
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0answers
54 views

Simplifying this circuit using optotriacs?

I'm currently trying to create an interface between my Arduino-compatible (NodeMCU) and my OpenTherm boiler. OpenTherm is a protocol used by some boilers (mainly in Europe) which allows for the ...
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1answer
61 views

Need help determining smoothing capacitor(s) for rectifier

I am making a rectifier for a single N-Scale train building. It takes DC, but the train controller gives out 19VAC. I have 4 1N4001s and some capacitors, but probably not the right size/uf. I only ...
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1answer
134 views

Rectify 220v ac to 220v dc using mechanical system

I want to have 220v dc using a mechanical system (without using diodes ,or with using homemade diodes) so I came up with this idea : when the wave is positive the electromagnet atract the bendable ...
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51 views

Difference of single phase rectifiers

I am trying to understand the difference between the following rectifiers: What would be the difference between these two output voltages? I can see that there would be no negative output voltage in ...
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1answer
43 views

Why does the TUF formula use \$V_{rms}=\frac{V_m}{\sqrt{2}}\$ and not \$V_{rms}=\frac{V_m}{2}\$ for a half wave rectifier

We know that for a half wave rectifier \$V_{rms}=\frac{V_m}{2}\$ and \$I_{rms}=\frac{I_m}{2}\$ But the Transformer utilization factor uses \$V_{rms}=\frac{V_m}{\sqrt{2}}\$ (But uses \$I_{rms}=\frac{...
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61 views

Half wave sine form factor example

Hint: in my calculations below, to make math easier, i assume that the diode = ideal(there is no 0.7 voltage drop across the diode) Vrms = 0.707Vp => Vp = 14.1v, therefore Vp(load) = 14.1v ...
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3answers
121 views

What enables the home appliances and electronics to work on single-phase?

Talking about the home appliances and electronics, if it is single phase that we are using in houses and currents get to zero every half cycle, how do the home appliances (using AC) and electronics (...
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40 views

DC Variable power supply

I would like some advice on a particular circuit design for a variable DC power supply. Here is some information about what I want to do: I want to do open and short circuit tests on an alternator ...
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126 views

why the power absorbed by RL load in half wave rectifier is I^2R not V^2/R nor VI

why the power absorbed by RL load (resistor in series with inductor) in half wave rectifier is I^2R not V^2/R nor VI. V , I are with RMS value.
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Discrepancy between simulation and measurement for a voltage doubler/ rectifier design at 5.8 GHz

I am designing a pretty straight-forward voltage doubler at 5.8 GHz with MACOM's MA4E1317 diode, which I have used before and know from previous experience that matches pretty well with the spice ...
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3answers
123 views

Why are the diodes in this circuit forward biased in spite of no current flowing through them?

Considering the following circuit, Normally in the +ve half cycle SCR1 is triggered after it takes its triggering gate pulse and then D2 becomes intrinsically forward biased so it's on and conducting ...
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51 views

Discrepancy between calculated rectified voltage and measured value

I'm experiencing some problems with a simple task. Assuming we have a circuit like this: simulate this circuit – Schematic created using CircuitLab To calculate the rectified voltage I'd use ...
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1answer
45 views

Measuring 24V AC input state with microcontroller

I need to measure the state (on/off) of a 24V AC line that is currently powering a solenoid valve. The microcontroller will take over the control of the solenoid through a solid state relay, but I ...
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1answer
191 views

What is a typical reverse recovery time for a zener diode, or is reverse recovery time not applicable to zener diodes?

A little background.. I'm trying to understand how zener diodes respond to high voltage transients. I stumbled across discussions of reverse recovery time and I'm curious how it applies specifically ...
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1answer
105 views

Trying to understand floating voltage

I'm trying to understand the concept of a floated voltage, and why it is needed in some cases. For my own case, I am using a variac connected to a rectifier to provide a DC voltage for a circuit, (...
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2answers
198 views

How to solve a a full wave rectifier with two diodes and a ground in the middle?

This is the problem I am trying to follow along with the solution but I don't understand what is happening, how do I handle the random ground in the middle?? is the node between d1 and d2 40Vpeek and ...
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1answer
299 views

MOSFET - shorting the gate and source

I am currently in the fourth year of my bachelor's degree and my knowledge on this is really really really very limited, but i got a simulation circuit of an isolated dc-dc converter from my senior ...
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3answers
192 views

Is this a selenium rectifier?

The item below is one of two components of an old (c 1950?) electric chisel. (The other part is a reciprocating solenoid.) The name tag on this part says "Electric Converter", with a 6 amp rating. ...
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2answers
382 views

What is the purpose of grounding rectifiers?

In the centre tapped rectifier: It seems as if the highlighted ground line would provide a short circuit for any current developed between the top/bottom wires and the centre tap, eliminating any ...
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2answers
673 views

How does this opamp full-wave rectifier work?

I want to understand how the following circuit works. I understand OpAmps, diodes, and voltage dividers pretty well; but put this circuit together, and I don't know how it affects positive or negative ...
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57 views

Using Opamp as rectifier

Schematic below is a current sensing circuit, Rs is 35u sensing resistor and current I1 is bi-directional. I am confused on why diode D2 makes this circuit a full rectifier. Schematic: Simulation ...
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2answers
624 views

Full wave rectifier with a high DC offset voltage?

For a full wave rectifier, can it rectify an AC wave with a DC offset above the rated voltage of its diodes rated voltage if the peak to peak voltage of the wave is within its rated voltage? Like if ...
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290 views

Output voltage of a rectifier

Is the output DC voltage of any rectifier (Halfwave, Fullwave or bridge) simply equal to \$\sqrt{2}\$ times Phase to neutral AC input voltage? Or does every rectifier circuit have its own formula to ...