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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AC to DC without transformer. How does this thing work?

I disassembled a Chinese-made flashlight and found they use just capacitors to bring down the voltage instead of a transformer. They are using it to charge small lead-acid battery. My question is how ...
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54 views

Remove DC offset and rectify

I'm using ACS712 hall effect current sensor to detect presence of current in the power line of a remote device. I don't need exact current value but rather just want to know if it's above certain ...
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159 views

Equal rectifier capacitor

Capacity of the capacitor in circuit below is equal: What difference is there between the circuits? Which one is better? Can i made equal the capacitor with the capacitors in series? Which one is ...
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108 views

How do capacitors help in smoothing potential difference from a full wave bridge rectifier?

Let me establish some facts I have understood by myself: The polarity of resistor does not change, as the current from A.C source flowing through does not change direction. The D.C potential ...
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95 views

Differences in full wave rectifiers

I have looked up a few things regarding rectifiers but there is still something that bothers me: If we put aside half-wave rectifiers or things like tripler and stuff, there is apparently two kinds ...
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1answer
52 views

Single Phase Diode Bridge Rectifier - Inductive Smoothing Question

So I don't understand how the answer is 2.124 volt-seconds when if you put the equation through a calculator it comes out as -0.174. Is there an additional mathematical step to do on the cosines in ...
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41 views

Differences between controlled rectifier circuits

I'm trying to determine the pros/cons/applications of a few similar rectifier circuits. In particular, these two: My questions are these: I understand that the second one eliminates the ...
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2answers
75 views

Output voltage of bridge rectifier

I'm trying to figure out why the output voltage waveform of this circuit would not include a DC offset of E. My understanding is that D1 becomes forward biased when Vs > E, and so that is when it ...
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2answers
135 views

Burning rectifier capacitor 220V input

I have built the following circuit for 1 watt power LED lamp. The capacitor C4 (220uf 50v) was heating after a few seconds then it burnt. What is wrong with the circuit? I can remove C4 but reducing ...
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1answer
59 views

3 Phase Motor Rectifier

I have a Turnigy Rotomax 50cc engine and I am trying to rectify it. I don't know whether it has delta or a wye winding style but I suspect that it is delta(Left Picture). This is what I have so far: ...
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1answer
56 views

Current rating of center-tapped full wave rectifier vs full wave bridge rectifier

I was going through the Art of Electronics (Horowitz & Hill) and in the section on center-tapped full wave rectifiers (pg.47) it says: "The output voltage is half what you get if you use a ...
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2answers
140 views

1n4007 Bridge Rectifier at 220 Volts AC?

So, I just started getting into electronics, and I have built a bridge rectifier using the 1N4007 diodes. So far I have been using this rectifier with a 24 volts step down transformer, but now I need ...
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2answers
97 views

Center-tapped Full Wave Bridge Rectifier

I'm designing a high-voltage power supply for a plasma experiment. I have a center-tapped ignition transformer (50:1) that I'm using to step up the voltage from 120VAC to 6kVAC and then using a full ...
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3answers
102 views

Stable power for LED from 5.5 to 7.5V AC

About a year ago I posed the question "Making 12V DC from 6V AC". Since the conversion from AC was going to be problematic (for me), I tackled the tail/brake light first, because working with the 6V ...
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3answers
108 views

DC or (AC + DC) coming out of a full wave rectifier

DC or (AC + DC) coming out of a full wave rectifier Is there a truly correct answer to this? Considering the representation as a waveform I would say its an AC wave form offset by some DC amount. ...
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7answers
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Why are rectifiers-inverters used to drive AC motors instead of using the rectified current to drive DC motors?

I understand the advantages of using a rectifier-inverter system to drive an AC motor instead of simply plugging it into mains power, as it allows much better control of its speed and performance; but ...
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0answers
46 views

How to add a desirable phase shift in the input from 3-phase ac mains?

I want to build a 12 pulse rectifier circuit. I know delta-wye or wye-delta transformers can be used to add phase shifts equal to the multiples of 30, but I don't want to use transformers. Is there ...
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2answers
305 views

Help with Piezo conditioning circuit schematic

I have the below schematic that uses a piezo sensor as input and relays that information to an Arduino board for processing. The schematic came from a few folks over at MIT that built a ping pong ...
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3answers
247 views

Is a full-wave rectifier really required with a 7810 regulator?

I'm possessed of a 12-0-12 500mA transformer. To supply a stable 10V, I seek to connect a bridge rectifier, roughly filtered with a 1000uF/50V electrolytic capacitor and a 7810. Is a bridge, or ...
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1answer
113 views

Max size smoothing capacitor without melting the rectifier

I am currently making a tube amplifier for a school project. I started out with a finished design, but have changed a lot and need some guidance as a result. I am currently using a full wave ...
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2answers
117 views

Fast rectifier diodes in parallel at SMPS

I'm trying to build a 35 V @ 10 A SMPS. I don't have 15A diode to rectify the transformer output. Can I use two BYW29 in parallel? They are rated at 8A. I know that when diodes are in parallel, the ...
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1answer
139 views

Wiring a 24VAC Vacuum Pump to 220VAC Mains Supply - Need Help

perhaps you can help me understand what I need to do. I have a MEDO VP0125-C001, 50/60Hz, 24VAC, 19/15W Vacuum Piston Pump, with a black wire and a white wire. For all intents and purposes it is ...
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58 views

Changing synchronous rectifier's output voltage by varying phase

I'm going to design a voltage converter with regulated three-phase 220V 50Hz output. It will consist of mains rectifier, filter (with 310V DC output), a self-oscillating high-frequency inverter, a ...
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1answer
105 views

Is the circuit right?

simulate this circuit – Schematic created using CircuitLab I have found this questions and the circuit seems worong to me because the output terminal hasn't end point. If we add ...
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2answers
323 views

Average output voltage of a fully controlled full wave rectifier

What is the average voltage for a fully controlled bridge rectifier with firing angle \$\alpha\$ ? In a lot of web resources it is said to be: $$\frac{V_{max}}{\pi} (1+ cos(\alpha))$$ For example ...
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165 views

Full-bridge rectifier not working as expected

Im trying to create a full bridge rectifier from a step-down voltage source. The circuit is as follows: simulate this circuit – Schematic created using CircuitLab The problem is that I'm ...
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3answers
113 views

Quick and dirty LED power from AC

I have some extra 1n4007 diodes, and was wondering whether, instead of using a power supply to drop the voltage, could I could power LEDs by just making a full wave rectifier, Using a capacitor to ...
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1answer
178 views

Precision rectifier using a low-power single supply rail to rail op amp

Rectifying a very low voltage signal turns out to be very hard. (for me) I've tried this a few different ways without good results. I'm looking for a reasonable simple solution that performs well ...
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1answer
89 views

Light Organ — Need help with LED grid

I'm building a light organ for a school project. I've got a crossover to separate the frequencies, now I need to make an LED grid. The input will be an constantly changing analog signal (whose ...
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2answers
52 views

Inverted signal in biopotential circuit

Im building an sEMG circuit and am a bit confused on how to change the signal back to non inverted before the output.The signal goes -> amplifier (x16)-> high pass filter -> variable amplifier ...
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1answer
312 views

Does a bridge rectifier care that much for AC frequency?

As I understand it, a bridge rectifier is a set of diodes that play a trick of logic that keeps the polarity positive. So, within the context of a household DC transformer does it matter what the ...
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2answers
123 views

Peak output current of a Full-Wave Bridge Peak Rectifier

I am attempting to design the first section of my power supply. In this case, I am going through my calculations for the Rectifier section. I am simulating my circuit with PSpice and while most of my ...
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69 views

Why does this voltage error amplifier output always reach its saturation voltage?

Why does the voltage output of both amplifier (Vm1 and Vm2 as shown in picture) always reach its saturation voltage?
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1answer
82 views

Middle-Tapped Transformer Full-Wave Rectifier Vs. Full-Wave Bridge Rectifier

In terms of output voltage, which one of these would be best? Coming into this, I would have to say the center-tapped transformer full-wave rectifier would allow the most accurate output voltage ...
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196 views

Precision Rectifier Help

I'm building a "precision rectifier" using an op amp and some diodes. The schematic is attached. On a breadboard, this circuit behaves as expected, producing a clean, rectified sine wave. When I ...
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2answers
71 views

Rms value of rectified output from a half wave rectifier

The rms value of an alternating quantity which is the input to a half wave rectifier is Imax divided by square root of two. Then the rms value of output should be IMAX by 2*sqrt two. But it Isht ...
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2answers
166 views

How does this power supply (resistor/capacitor) divider filter work? [duplicate]

I've been looking at various valve guitar amplifier circuits and in specific, the power supply section. I've been seeing a particular circuit that's repeating itself here and there in the power ...
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82 views

Potentiometer Ripple under load

I have the following circuit with a 10k 0.5w trim potentiometer. simulate this circuit – Schematic created using CircuitLab The voltage after the bridge rectifier is maintained at ~8.6 ...
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0answers
40 views

Amplifying an antenna signal before rectifying it

I do not have any germanium diodes for a radio project I am working on. Due to this, I must amplify the antenna signal before I rectify the signal, as I will be using a silicon diode. How do you ...
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1answer
63 views

Measure both sides of an AC and DC circuit

So I have recently begun messing with diodes and there use in converting AC to DC. What I am curious in trying to do is to hook up my dual channel oscilloscope on bother DC and AC side to view the ...
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3answers
180 views

AC to DC Bridge Rectifier DC Amperage Drop

Assuming I used a 120 VAC -> 12 Vac 2 VA transformer and pass the current through a full wave rectifier circuit what is the maximum amperage I could draw on the DC side.
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1answer
109 views

Diode Rectifiers Driving Highly Inductive Loads Producing Input Square Wave?

According to a textbook that I have, when driving an inductive load with a diode rectifier, the input current becomes distorted. The illustration of the circuit below has the input as an AC source, ...
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168 views

Three-phase rectifier circuit simulation

Is this the correct way to simulate a three-phase full bridge (6 pulses) rectifier? I ask because I have tried this first without the two capacitors, just one, and the capacitor seems to have ...
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0answers
117 views

Difficulties with Representation of Half Wave and Full Wave Rectifiers on PartSim

After tweaking the domains, the run-time duration of the simulation and the location of the probe I discovered that there was no mistake. Below I've attached a picture of the graph blown-up. ...
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1answer
76 views

Unexpected rectifier waveform

I've built a simple half-wave rectifier using the following components. \$10\$k\$\Omega\$ resistor 1N914 diode 1 kHz sinusoidal source I'm measuring the voltage across the resistor with an ...
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2answers
107 views

What are the ratings of vintage Selenium Rectifier B20/16-2,4?

Sort-of a follow-up to How to ground a vintage device that was powered without a ground? in that the device is the same. I finally took the leap and opened up the old charger (depicted in the linked ...
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315 views

Using normal diodes to rectify high frequency waveforms

Recently I was try to rectify the output of an “electronic transformer” using an ordinary rectifier diode 1N4007. The output of this device is bursts of frequency around 50kHz, with an envelope of ...
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5answers
648 views

Transformers vs. voltage regulators

I'll start by saying that I'm self-taught in electronics, and tend to ask a lot of questions because I don't know NOT to ask them. This is one of those questions. Consider: I have 120VAC and need ...
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2answers
214 views

How to construct this simple circuit properly?

I am a total newbie in electronics and circuit design. I am working on a project that involves a AC motor and four 1W LEDs. I found a motor that works for me and it comes with a AC/AC power adaptor ...
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96 views

Reference voltage source using classic rectifier diodes

I want to make some simple voltage stabilizer using operational amp, but need source of reference voltage. I know that I can buy this component, but shop is far away from me and paying 8e for courier ...