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Questions tagged [voltage-doubler]

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For questions about circuits which produce an output voltage that is double the input voltage, usually using a combination of capacitors, diodes, and/or transistors.

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Please help me understanding the current direction of this voltage doubler. Above is the plot for the circuit. The green line is the input voltage and the teal line is the output voltage Let's say the ...
SmartWallet3000's user avatar
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simulate this circuit – Schematic created using CircuitLab In the doubler 110 V ac (household wall socket) was applied to the left of the first (highest left) capacitor which is 33 µF ...
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I'm using Ansys Circuit Simulator (Nexxim) to perform Harmonic Balance (HB) simulations for RF energy harvesting, specifically to evaluate RF-to-DC conversion efficiency using a Schottky-based ...
Ciji's user avatar
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4 votes
3 answers
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I ran into a physical example of this where I work, and I don't understand the mechanics behind how it's functioning. My only thought is the unconnected coils are somehow causing the ac wave to be ...
Andy Hemphill's user avatar
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The circuit in the first current diagram is not functioning. Which connection among the following should be removed: 1 to 2, 2 to 3, 3 to 4, 3 to 6, 4 to 5, 5 to 6, or 6 to 1, to make the circuit ...
kukuouk's user avatar
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I am playing around with charge pumps / voltage doublers for the first time and have some questions that I can't find anything online to. First, I have a standard charge pump, in an ideal world the ...
Spider999's user avatar
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A voltage doubler is connected like this (the voltage source in series with the inductor simulates transformer output): After stepping the load (100k, 1M, 10M, 100M, 1000M) the waveforms look like ...
Hyp's user avatar
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1 answer
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In the circuit, we know that when D1 is connected then the C1 capacitor is also in the circuit until it's fully charged. Why when D1 is disconnected and D2 and C2 are in the circuit, C1 can't ...
Anonymous's user avatar
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I have an astable multivibrator that produces 5 V square wave input to the push pull and the voltage doubler part of the circuit. Now somehow the simulation works at 0.1 uF capacitors for the voltage ...
Jenil Makwana's user avatar
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I want to make a circuit that changes voltages with the duty cycle as well as doubles that for me. I therefore made a voltage doubler circuit along with alternating PWM wave. But as I changed the duty ...
kam1212's user avatar
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4 votes
3 answers
481 views

I have seen old vintage tube power supply (for example Heath HP-23A), that transformer secondary is roughly 300v RMS and a voltage doubler is used at output to obtain 750+ V DC for vacuum tube anode. ...
Ashok Das's user avatar
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I understand that when the voltage at the anode of the first diode is greater than the cathode it turns on, however immediately after the first two positive cycles, how does the diode turn on? It ...
guapy pebble34'7's user avatar
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The textbook explanation is not doing it for me. The half-wave voltage doubler shown in Fig. 4-27(a) offers some improvement in safety over the full-wave voltage doubler. Compare Figs. 4-24(a) and 4-...
Al T's user avatar
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High-frequency AC transformer output hooked to half-wave DC voltage doubler. Current through is 6 A to LOW frequency switching load. I assumed there was enough 20 kHz time to keep the second cap ...
Russ's user avatar
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1 answer
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I am prototyping this voltage doubler circuit based off the datasheet of the TC962. Capacitors are GRM21BZ71E106KE15L. When applying 9V at the input, the output is 17.96V at no load. When drawing ...
Luke Galea's user avatar
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I have an Echo 58 volt chainsaw and the battery charger has malfunctioned so that it no longer charges the battery pack. I have been charging it by using a 2A current limited lab power supply set to ...
PStechPaul's user avatar
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Can you explain the basic reason why boost converters seem to be more popular than voltage doubler circuits for load bearing output? I have built these two circuits in the simulator and they both ...
Jay Dee's user avatar
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I need +/- 12 Vdc power supply for AD8421 from 5 Vdc. Can I use LT3582 (with output +/-12 Vdc; 85 mA) to supply the AD8421? Thanks.
Ihdina's user avatar
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I'm trying to understand how a voltage doubler using a switched capacitor circuit affects the charge being distributed from the input to the output. simulate this circuit – Schematic created ...
lucenzo97's user avatar
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I need some help with this schematic to have higher voltage at Vrect. This is for charging a receiver at 25 mm in a WPT application. I was expecting a voltage of 2Vin at the output of the voltage ...
Guillermo Durà Mira's user avatar
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4 answers
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Considering this circuit (NE555 voltage doubler), how can I find the formula for the relation between the value of the load resistor and the output voltage? You can see below two examples of this ...
JeanMi's user avatar
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1 answer
357 views

I am learning about Jim Williams's avalanche pulse generator. It is in page 93 of AN47 - High Speed Amplifier Techniques. I don't understand the circuit's voltage step up network, which is 1.5 V to ...
haiwuxing's user avatar
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186 views

Is there any simple way to double the DC voltage during the first 10-50 ms? For example - I need 6V at startup and then go back to 3V that is set on power supply. My current solution is Attiny85 and ...
electronics's user avatar
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I am trying to use two AAA battery to generate two power supplies, 1.8V(via regulator AM1117) 5-6V to drive LED (using voltage doubler TC7660). Both these voltage is requirement of Oximeter sensor ...
Xinus's user avatar
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1 answer
448 views

I have designed a high voltage power supply and I'm trying to filter out the switching noise. I'm using a transformer that is driving a basic Cockroft-Walton voltage multiplier to a 1200V DC signal. ...
bricechart's user avatar
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1 answer
236 views

Given a voltage doubler circuit: simulate this circuit – Schematic created using CircuitLab You can figure out what should happen in stead state if \$R_L=\infty\$ and \$R_s=0\$. In that case, \$...
KD9PDP's user avatar
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2 votes
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I am working on a circuit based on the LT1930 (DC634A) to boost input voltage between 30 and 90V. I would like to take this boosted voltage and double it via a Dickson charge pump to the required ~...
dtk's user avatar
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I'm sketching out a design for an easily and cheaply built handheld computer based on an ARM microcontroller, and thinking of using a small LCD display. The display has an LED backlight rated for up ...
Mike Spivey's user avatar
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2 answers
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I want to ask about a voltage multipler. I understood the voltage doubler. By setting the capacitor values ​​of the two capacitors to the same value and setting the voltage doubler circuit, we can ...
종민이's user avatar
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5 answers
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Background I am working on a microwave oven that starts to emit an odor after 2 minutes of full heating despite otherwise working correctly. The smell is the same as that "sweet", ...
kackle123's user avatar
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I have a built a simple voltage doubler. the circuit is as below: simulate this circuit – Schematic created using CircuitLab This represents only one stage, and my circuit has 4 stages. The ...
NeuroEng's user avatar
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0 answers
260 views

I am designing a voltage multiplier with 5 to 10 stages. I have this circuit where I run a transformer at 450KHz and feed the output to the voltage multiplier. Is it a good idea to use thin film ...
Deadpool's user avatar
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128 views

Is my thinking of half wave voltage Tripler Circuit right?because my thinking is a little bit different from the book's Book Let the input is a sine wave with amplitude \$=V_m\$ 1.When input is the ...
tester_ga's user avatar
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1 answer
139 views

I can get final output voltage \$V_{\text{on}} = 2V_p\$ when this circuit is assumed initial voltages of \$C_1\$ and \$C_2\$ is zero. and \$C_1 = C_2\$, and using the ideal diode model. But when I ...
Pare Kanes's user avatar
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3 answers
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I have an Anker ~27Ah Power Bank which has 3 × (5v , 3A) power output. Is it possible to connect the outputs in series and get 10v or 15v output with a current flow of 3A?
user12530749's user avatar
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1 answer
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I'm trying to build the following circuit. The advice on the site I got it from said to try using 1n4001's instead of 1n5817's, because that would get the voltage down to around 15V, which is what I ...
volfied's user avatar
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1 vote
1 answer
429 views

The idea behind the Greinacher voltage doubler is so clear and intuitive that it can be explained, like any brilliant circuit idea, in a very simple way. I did it yesterday in a similar question where ...
Circuit fantasist's user avatar
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2 votes
2 answers
753 views

I have no particular interest in power electronics but I am always impressed by such clever circuit solutions as the Greinacher voltage doubler. The idea behind it is so clear and intuitive that it ...
Circuit fantasist's user avatar
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3 votes
4 answers
957 views

I've been having trouble trying to understand the circuit mentioned in the title, which you can see in the picture below. Note that I'll be using the ideal diode model in my explanations. In case ...
John Katsantas's user avatar
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0 votes
4 answers
4k views

I do not understand how this voltage multiplier circuit works: wherever I have read (also Wikipedia), I have not found a step by step explanation. I do not understand if the voltage drop across the ...
Kinka-Byo's user avatar
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1 vote
0 answers
184 views

I have a 3.7V DC voltage source that I'd like to boost to at least 10 Volts. I've been using Microchip's TC7660 component as a voltage doubler. But it only comes in SOIC (rather large for SMT). And ...
nick carraway's user avatar
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0 votes
1 answer
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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 ...
penli's user avatar
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1 vote
0 answers
169 views

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 ...
user3602697's user avatar
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0 votes
2 answers
3k views

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 ...
snowg's user avatar
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11 votes
1 answer
1k views

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-...
user avatar
3 votes
2 answers
228 views

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 ...
user avatar
0 votes
1 answer
767 views

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 ...
Tom's user avatar
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0 votes
1 answer
425 views

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 ...
M. Kim's user avatar
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-2 votes
2 answers
442 views

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 ...
Andrew's user avatar
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1 vote
1 answer
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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 ...
buildsucceeded's user avatar
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