Questions tagged [bridge-rectifier]

an arrangement of four or more diodes in a bridge circuit configuration which provides the same output polarity for either input polarity. It is used for converting an alternating current (AC) input into a direct current (DC) output.

Filter by
Sorted by
Tagged with
4
votes
6answers
2k views

Bridge Rectifier Fails When AC Inputs are Shorted

I am working on a design that involves powering a 3.3V microcontroller off a doorbell transformer but I am running into an issue with the bridge rectifier failing when the AC inputs to the rectifier ...
3
votes
1answer
4k views

Diode Bridge in Simulator not behaving as expected

Hi I have a Diode Bridge as outlined in the image below. As you can see I am getting a negative voltage on one pair of diodes instead of this voltage being flipped to positive. Can you see anything ...
5
votes
3answers
3k views

Storing the charge from a MOSFET Bridge Rectifier

I am using the following MOSFET Bridge to harvest AC bursts, that come from an electromagnetic transducer. In front of this circuit is a supercapacitor I have added. I read the following on a ...
1
vote
1answer
380 views

Measuring an AC-voltage at the ouput of a full bridge rectifier

I've a full bridge rectifier and I put the following function into it: $$5\sin(100\pi t)\tag1$$ So, at the output I get: $$\left|(5-2V_d)\sin(100\pi t)\right|\tag2$$ Where \$V_d\$ is the voltage ...
0
votes
1answer
271 views

How much DC voltage is needed to brake a 3 triphasic motor?

What would the nominal parameters of the bridge rectifier and the transformer be?
0
votes
1answer
989 views

Importance of series resistor at output of Rectifier

For conversion of AC into pulsating DC we used Rectifiers circuits. But I read somewhere (from a well-known site) that the circuit does not work in ideal condition if I used my first circuit. The ...
0
votes
1answer
69 views

Examine rectified voltage before and after

I built a simple bridge rectifier. simulate this circuit – Schematic created using CircuitLab I connected the output of the function generator with CH1 of my oscilloscope and with the input ...
7
votes
3answers
6k views

Bridge rectifier: 4 diodes vs. single chip?

I notice (among the DIY audio enthusiasts at least) that when it comes time to design a power supply for an amplifier, DAC or whatever that the parts list will inevitably include something like "4 x ...
5
votes
3answers
657 views

Why AC supply is rectified first before stepping voltage down?

I have opened one of my phone chargers and was trying to understand how it works.. I found IC MB6F just at AC input which came out to be a bridge rectifier. My question is why AC is first rectified ...
0
votes
3answers
83 views

Choosing capacitance for recifier

So I'm trying to use a couple of rectifiers. Specifically, the "NTE5326" and the "36MB120A." I've tried following videos on how to calculate for a smoothing-capacitor but to no avail. If you use ...
2
votes
1answer
2k views

What is the rectifier's role in this AC dimmer circuit?

Here is a typical AC dimmer circuit: http://www.eleccircuit.com/wp-content/uploads/2010/09/light-ac-dimmer-120watt.jpg I just came across another variant which uses a rectifier: http://www....
1
vote
1answer
84 views

A problem regarding connecting the grounds within two seperate circuits

Figure 1 I am trying to design the above circuit for my project to create zero crossing detector as shown in the above figure. This configuration was proposed originally by the member named "...
1
vote
3answers
429 views

How to to Use a Nylon Shoulder Washer?

I'm somewhat curious as to how to use a nylon shoulder washer with a bolt. There is an example of this here (https://electronics.stackexchange.com/a/45579/95654), but I can't figure out how it would ...
1
vote
3answers
1k views

How to create a zero crossing detector using a full bridge wave rectified circuit

Currently 1) I have a full bridge wave rectified ac waveform of 10Vmax. 2) I also have a potentiometer adjustable DC waveform. 3) My rail voltages are +12V and -12V. 4) I currently supply my full ...
1
vote
3answers
2k views

Help me understand XOR gate with diode logic [closed]

I'm generally a pretty smart person, but for some reason I can't get my head wrapped around this one. A little background - I have performed this function before using two diodes and two SPDT ...
0
votes
1answer
3k views

Commutation overlap angle

Let's assume we have three-phase diode (not SCR, ignore those in the picture) rectifier like in the picture: Assuming we have no source inductance and other ideal conditions, diodes from 1 to 6 are ...
0
votes
1answer
258 views

Bridge rectifier peak voltage at load

Assuming the peak voltage at \$V_1\$, \$V_{1p}=9.25V\$ and ideal silicon diodes (\$0.7V\$ drop in forward bias) and the DC output in \$V_0\$ is \$5V\$. I want to find the \$V_{op}\$, peak voltage at \$...