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Questions tagged [voltage-doubler]

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Step up 3.3vdc to 5vdc circuit diagram

I need to step up 3.3vdc to 5vdc. Can anybody guide me to do the circuit in my own rather than buy one converter from the market.
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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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2answers
53 views

Does the capacitance values matter in a full wave voltage doubler?

I've simulated the following schematic on Cadence, and another less professional simulator called 'everycircuit'. I initially had a C1 = C2 = 10uF which simulated correctly on both simulators. Then I ...
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Voltage doubler for 1 V 100 kHz input

I am trying to design a voltage doubler and voltage multiplier for a sinus wave voltage source with an amplitude of 1 V and frequency of 100 kHz. The problem is I can't get the parameters for the ...
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1answer
1k views

Unexpected results from voltage mulitplier

I needed a high voltage (500VDC) source in order to test a circuit. To achieve this, my mentor instructed me to build a voltage doubler, which I would power with 250VAC. I chose to use a simple half-...
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1answer
46 views

What are the differences between Greinacher and Bridge voltage doublers?

I was reading a wiki article on Voltage doublers, and wondered - what are principal diffirences between two following schemes: They all share same amount of components, but when and why should be one ...
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1answer
55 views

Is it possible for a voltage multiplier to be used to provide both positive and negative voltage?

What I was wondering is it is possible to use a single voltage multiplier to provide a negative and positive voltage. Referring to this voltage doubler circuit, if you connect a capacitor to the top ...
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1answer
74 views

power efficiency's definition

Power Efficiency is defined as output power/input power, right? And there are a little bit different definition of power efficiency ...output power/(output power+power loss). Is these mean same ...
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2answers
124 views

High Voltage Double

I'm using a microwave oven transformer for some high voltage projects including testing it out with some voltage doubles. I ran into a rather curious problem I dont seem to understand and I'm just ...
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1answer
91 views

Is it ok to use an AC leg as ground?

I'm powering (hoping to power?) two boards from one 12V AC source. One is a preamp requiring 12V AC in (easy so far) and the other is a scavenged audio board requiring +12/-15V DC. I'm using the ...
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1answer
109 views

Why can't I simulate this circuit?

I'm trying to simulate a basic voltage-doubling rectifier circuit: But my time graph looks like this: Is there something wrong with my circuit? Am I using the simulator wrong?
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1answer
1k views

What is the difference between half wave voltage doubler and full wave voltage doubler?

What is the difference between half wave voltage doubler and full wave voltage doubler? (Using Practical Diode with forward bias voltage Vd) To be specific: i)Do the two differ in their principle of ...
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3answers
510 views

Why does the voltage double in a doubler-circuit?

I’m having a hard time understanding how the final voltage is achieved. I understand that in the first half of the sine wave the first capacitor gets charged to 1V. In the 2nd half the first one is ...
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195 views

Capacitors for Jacobs ladder?

Can I use 104 k 250v ceramic capacitors in a Jacobs ladder circuit? Do I need to use higher rated ones? I'm salvaging some of my components from a used CFL.
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1answer
81 views

Is the circuit a voltage doubler or not?

I'm not able to actually understand how the circuit behaves as a voltage doubler.From my understanding the circuit would behave as a voltage doubler if during the positive half cycle only D1 would ...
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0answers
317 views

How to analyze Voltage doubler circuit before capacitors reach steady state?

So for an assignment, I had to model a "voltage doubler" circuit using Pspice, and give it a transient analysis. Afterwards, we were asked to give a hand analysis on the voltages running across the ...
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1answer
49 views

(Heterogeneous) Chargepump questions

Updated to have organized schematic below, as was suggested. Keeping the original in case of.. simulate this circuit – Schematic created using CircuitLab I am trying to build a chargepump, ...
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0answers
94 views

What is the RMS voltage value of the transformer powering a six stage Greinacher circuit?

A six stage Greinacher circuit is powered by a 60Hz transformer. The voltage is measured through a 1 Giga-ohm resistive divider. The output voltage is 300kV. My question is about which formula I can ...
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2answers
295 views

Voltage Doubler design parameters

Looking for help answering a few question about choosing parameters for a small voltage doubler circuit. I'm looking to prototype a USB powered random number generator based on the shot noise of a ...
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1answer
345 views

Half Wave Voltage Doubler Simulation stuck

I'm trying to simulate the following circuit on LTSpice simulate this circuit – Schematic created using CircuitLab The capacitors have 10Meg Parallel ...
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2answers
429 views

Driving an N-Channel MOSFET H-Bridge from a voltage doubler

I've been looking at driving an H-Bridge to raise the frequency of the mains voltage from 60 hz to somewhere between 60-120 hz. I'm planning to use an Atmel Atiny84 to generate my clock frequency to ...
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4answers
657 views

Why is this LC filter where it is, and what function does it perform?

My customer has a motor controller that apparently only works with an LC filter in front of it. This configuration trips out on undervoltage: simulate this circuit – Schematic created using ...
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1answer
242 views

Voltage Doubler capacitor types

I've got a virtual isolation transformer by connecting two 12V transformers at the secondaries, so the input to my circuit is an isolated 120VAC (US). I'm creating a 2 level Greinacher style voltage ...
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2answers
2k views

Voltage Doubler stops 'Doubling'?

I constructed a simple voltage doubler on a bread-board. Here's the schematic. simulate this circuit – Schematic created using CircuitLab The output across the 100kΩ resistor was the following....
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0answers
323 views

Voltage Doubler Circuit

I currently have a 25 stage voltage doubler circuit I am using 50 0.1 uF x2 suppression capacitors, 50 1N4007 Diodes, and a 20 Mohm current limiting resistors at the final emitter stage. I am using ...
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1answer
4k views

Op amp based DC-DC voltage doubler

I have a LM471 op-amp and a single DC 5V source. Is it possible to double the source voltage using this op-amp? Can the op-amp be powered by the very signal to be ...
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2answers
2k views

How does the MAX232 double the voltage?

MAX232 Datasheet Hi, I am currently a student so bear with me please! I'm currently using a powering the MAX232 with 5V DC, and when I measure from VCC to lets say, pin 3, I am getting a voltage ...
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2answers
478 views

Voltage doubler or not?

I got a quick question! Is the circuit depicted in the link indeed a voltage doubler or is it just a bridge rectifier with smoothing capacitors?
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2answers
3k views

How does the Villard circuit double voltage?

How does the Villard circuit double voltage? I don't understand the capacitor role when the voltage sinewave goes negative.
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3answers
2k views

Voltage doubler

I'm a little lost as to what is going on in this circuit. The book I am reading mentions that the load would see double the voltage of the input voltage. How does this work?