154 Threads found on edaboard.com: Voltage Doubler
I need to power a 24VDC solenoid with a battery supply of 12V.
The solenoid is max 36W and only need to be activated for 3 seconds.
The circuit must be able to reactivate the solenoid within 30 seconds if needed.
I would like to use a voltage doubler ( maybe controlled by a PIC) for this job.
Can a FET be used for this solenoid activation?
Professional Hardware and Electronics Design :: 02.12.2002 15:42 :: msmax :: Replies: 5 :: Views: 2460
I made this little power supply but i have a problem wich i cant explain
When i make it like in the schematic my voltage between posive and ground terminal gets 48V (2x24V) and between negative and ground only -1V.
As soon as i add a 10k Ohm between the positive and ground terminal i get +24 V between
Analog Circuit Design :: 21.05.2004 07:20 :: tkcmd :: Replies: 0 :: Views: 682
How about using voltage doubler to generate the four phase clocks and then use these clocks to generate the high voltage?
You will need an oscillator that generates 4clock phases. Then with this you will need to make the nonoverlapping clocks for your circuit. Without non overlapping you will reduce the efficiency of your
Analog IC Design and Layout :: 14.07.2006 03:59 :: cretu :: Replies: 7 :: Views: 1519
I am designing a switched capacitor voltage doubler as shown in the attached figure. Its based on the cross-coupled configuration. The problem i am facing is that the 2 nmos transistors (cross coupled) are always off because the Vgs=0. How do I bias them so that they are on? If possible can someone explain how I go about designing the ci
Analog Circuit Design :: 27.09.2006 05:20 :: suhas_shiv :: Replies: 2 :: Views: 2021
I want to design a charge pump which can provide 5V/less than 10uA output.
The supply is 2.9~4.6V, while the total current budget is 50uA.
Can someone suggest me a good charge pump architecture, which can fit in (or close to) my 50uA current budget? And how to partition power budget to individual block???
I tried to build one with
Analog Circuit Design :: 11.10.2006 00:01 :: gggould :: Replies: 2 :: Views: 704
what is voltage doubler
and what is its application
Electronic Elementary Questions :: 23.05.2007 06:02 :: murali sridhar.d :: Replies: 4 :: Views: 994
How to improve the efficiency of CMOS voltage doubler using charge pump?
Analog Circuit Design :: 22.07.2007 22:47 :: zhangsai04 :: Replies: 0 :: Views: 591
I'm designing an integrated voltage doubler. The power is in the range of 20 uW. The supply voltage is approx. 2 times bigger than Vth. Since I use integrated capacitors, I have ~20% of parasitics associated with them. The other losses stem from parasitics of MOSFET switches. I use a non-overlapping clock.
:arrow: I get (...)
Analog IC Design and Layout :: 10.04.2008 10:39 :: malizevzek :: Replies: 1 :: Views: 716
Hi anyone who reads this, I'm currently doing my final year project. I'm doing chemical engineering but somehow my thesis supervisor asked me to do power supply circuits.
Anyway, I need to make a voltage doubler circuit with 20V input to get an output of 400V. I'm not really good at this electrical thingy so anyone can help me with the diagram?
Analog Circuit Design :: 19.08.2009 02:27 :: bcute_g1rl :: Replies: 2 :: Views: 1708
i would like to power up a system which need 3.7V dc and 300mA.
Now,if i have an input of 2V,can i use a voltage doubler to power up the system??
If cant,any solution to this problem?
Professional Hardware and Electronics Design :: 07.11.2009 08:06 :: roronoa :: Replies: 1 :: Views: 1059
hi i'm designing a voltage doubler for input from few mv to several volts . what diode sould i use? the frequency is in micro waves frequencies(cell phone frequencies)?
Analog Circuit Design :: 21.12.2009 09:08 :: hitman1988 :: Replies: 1 :: Views: 744
hi just try the following circuit i am providing you for voltage doubler and current pumping also will be
Analog Circuit Design :: 30.04.2010 09:19 :: pany2008 :: Replies: 2 :: Views: 1353
I have designed a voltage doubler circuit (for RFID application) using ADS. I would like to find out what is the input impedance of the circuit at different input power and frequency so that I can proceed with the design of an impedance matching network which will be placed in between a 50 ohm antenna and the voltage (...)
RF, Microwave, Antennas and Optics :: 15.06.2010 12:19 :: zhiweisim :: Replies: 1 :: Views: 1004
Try "Villard voltage Multiplier" in a search engine :). They are easy to build without many parts.
Depending on what you want it for of course, Villard multipliers are suited to generating very high voltages at low current.
What is your application?
Analog Circuit Design :: 24.09.2010 03:53 :: Rob B :: Replies: 2 :: Views: 1132
voltage doubler Tutorial & Circuits - voltage doublers Diode - voltage doubler Diodes - Electronic Hobby Projects
Power Electronics :: 25.12.2010 07:16 :: ckshivaram :: Replies: 3 :: Views: 1348
Can we employ voltage doubler/tripler using capacitor & diode at the output of any switching boost converter to get a higher voltage of our likeness?Is there any limitation in this method..?
Analog Circuit Design :: 09.03.2011 05:28 :: themaccabee :: Replies: 1 :: Views: 449
In the design the voltage doubler is used to power internal circuits.Two CAP are external.
simulation show big spikes on Vout when wire induction is took in account, especially at the transition from transfer phase to charge phase, a big minus spike occur.
Do the switching sequence or the rising speed of the swi
Analog IC Design and Layout :: 03.01.2012 23:21 :: wuxy :: Replies: 5 :: Views: 735
Hi, i want to use this voltage doubler in order to be used with a bistable relay .
the voltage doubler will be switched using a microcontroller, and the voltage doubler will be applied to the relay the relay is 5 VDC, so i hav
Electronic Elementary Questions :: 02.05.2012 07:31 :: yassin.kraouch :: Replies: 3 :: Views: 561
it is best if you post your entire schematic including relays as there may be better ways to switch analog.
you can simulate here too if you dont have one.
MAX232 also runs on 5Vdc and generates 15V from .1uF..
similar ways clocking >10KHz SQ.wave from 5V with voltage double CR-C previously stated also w
Analog Circuit Design :: 02.05.2012 16:01 :: SunnySkyguy :: Replies: 5 :: Views: 754
The bridge (or Greinacher) type qualifies as a full wave voltage doubler. Also the Cockcroft-Walton type.
Full wave refers to the fact that the load capacitor receives a charge during both the positive and negative halves of the AC supply cycle. Hence this excludes the Villard doubler.
Full-wave has less ripple voltage (...)
Hobby Circuits and Small Projects Problems :: 06.12.2012 04:50 :: BradtheRad :: Replies: 1 :: Views: 855
What have you tried so far?
What has or has not worked for you?
Do you have a schematic of a voltage doubler which you wish to test in simulation?
Are you interested in one that is supplied by AC? Or pulsed DC? Sine waves or square waves?
In general (and if components could be ideal), the greater the Farad value of the capacitors, the greater
Electronic Elementary Questions :: 13.12.2012 05:44 :: BradtheRad :: Replies: 5 :: Views: 608
I need 18 volts supply, since i'm having 12 volts transformer i decided to use full wave voltage doubler to raise voltage to 24 volts.
But at the output of doubler i'm getting 36 volts :/ and after pluging it to LM7818 at the output of regulator i'm getting 3.5 volts :(
In datasheet of LM7818 maximum input (...)
Analog Circuit Design :: 15.03.2013 12:47 :: aurelien_7 :: Replies: 3 :: Views: 316
Hi folks. I am designing a voltage doubler in a TSMC process. I used diode-connected native transistors (VTH is a few ten mV) and the schematic is shown in the enclosed pic.
When I did transient simulation, I found something weird and different to what I read. At the moment when the transistors were turned on/off, I saw some current spikes, see
RF, Microwave, Antennas and Optics :: 17.05.2013 09:34 :: mohmohcha :: Replies: 1 :: Views: 207
Either you use a stepup DC/DC converter that will give 12VDC out with different in voltage. If you have constant 6VDC as input it is easier, I would recommend a chip from Maxim. I do not know what current you need, either use parametric search at their site or give more info.
Convert from AC-DC is wrong way to go I think, you already have D
Hobby Circuits and Small Projects Problems :: 26.02.2005 14:15 :: Cluricaun :: Replies: 8 :: Views: 2276
You will need another power supply or circuit. A simple voltage doubler might work. Put the AC output of your system through a series capacitor. Then connect a large value resistor from your 20V to the far side of the capacitor. You will end up with an AC signal with a 20V average offset.
Hobby Circuits and Small Projects Problems :: 19.06.2005 21:48 :: flatulent :: Replies: 1 :: Views: 581
here you have a nice tutorial about voltage doublers:
Electronic Elementary Questions :: 18.03.2006 07:29 :: slavko :: Replies: 3 :: Views: 2403
Any dc-dc step-up converter can be called a voltage booster ..
For example, if you need 12V and your battery is only 6V, you have to BOOST the voltage .. see picture below ..
Analog Circuit Design :: 13.04.2006 00:02 :: IanP :: Replies: 3 :: Views: 1247
The logic level voltage translator is very simple:
It has 2 NMOS. The gate of the second NMOS is driven by an inverter connected to the input. The inverter is connected to VDD1. The drains of the 2 NMOS feeding a cross-coupled PMOS pair. The cross-coupling mean connecting the gates and drains crosswise. The sources of the PMOS are connected to V
Analog IC Design and Layout :: 29.05.2006 04:29 :: rfsystem :: Replies: 4 :: Views: 1080
yes, you need a body switch to flip bodies from VA to VOUT and so on. This is usually just a simple high-side comparator that chooses the higher of two voltages, and muxes it to the output. Buf if you're already generating doubled clock signals, you may be able to use a copy of those.
But actually, isn't your doubling mechanism charging throug
Analog Circuit Design :: 15.06.2006 17:05 :: electronrancher :: Replies: 3 :: Views: 1430
Just as described in the pic:
My question is how to determine the bulk(S3,S4) voltage?
I want to get a regulated voltage vout:vinvoltage levels:vin,vout,v(A);to prevent leakage current,the bulk (S3,S4) must be connected to the highest voltage, I have done voltage (...)
Analog IC Design and Layout :: 15.06.2006 06:25 :: allan_guo :: Replies: 0 :: Views: 759
Can somebody give me papers/reports on design of High Current(>50mA) charge pump voltage doublers using CMOS? I have tried looking on the web but all I can find is PLL charge pumps which use very little current. I need one for very large current?
Analog Circuit Design :: 07.09.2006 05:04 :: suhas_shiv :: Replies: 2 :: Views: 1051
If input voltage is 5V and the output is -10V, the current is not specified. Which IC can fulfill this task. The circuit should be simple and not expensive. Can anybody help me?
Analog Circuit Design :: 12.02.2008 05:28 :: eugenehhk :: Replies: 1 :: Views: 930
I see this paper which is applied an average modeling technique to model switched-capacitor DC-DC converters.
The equivalent circuit of voltage doubler is shown to model it by using verilog-A or simulink?
(The paper is also uploaded.)
Analog Circuit Design :: 07.03.2008 02:27 :: shaq :: Replies: 0 :: Views: 745
I am working on voltage doulber. There is a problem when I add the ESR shown in the figure. The voltage of the output can not be inverted or goes below zero and stayes at high. The voltage is supposed to be inverted @ -Vin. When I remove the ESR, everything goes right. The value of ESR is 0.1m ohm and of C is 10uF.
For more (...)
Analog Circuit Design :: 16.04.2008 08:00 :: yschuang :: Replies: 2 :: Views: 447
Hello i was wondering if someone could give me advice on a problem related to stepping up voltage.
How do i up the voltage from 0.7V to +-2V using a lm317?:
Any circuits out there?
Hobby Circuits and Small Projects Problems :: 14.10.2009 06:17 :: cocoman :: Replies: 5 :: Views: 2813
If one were to build a voltage multiplier circuit constructed of a chain of "doubler" such as that shown below and inputing a wave with a 50% duty cycle, one could expect to double their voltage at each stage. That we know. But what if the duty cycle were say 10%. Would that reduce the voltage multiplier effect of each (...)
Analog Circuit Design :: 30.06.2010 11:57 :: ngmedaboard :: Replies: 7 :: Views: 1665
I'm using a neon power supply like like this:
The 10 kV goes through a simple voltage doubler (2 caps and 2 diodes) and then through a 1 M-ohm resistor to limit current. I'm trying to charge a large 40 kV cap.
The problem seems to be that the Neon power supply shuts itself off after briefly changing th
Analog Circuit Design :: 19.07.2010 11:32 :: mribble :: Replies: 0 :: Views: 578
Create Pulse Width Modulation ( PWM) pulses which are neccessary to increate the voltage.
Analog Circuit Design :: 28.09.2010 22:28 :: john blue :: Replies: 2 :: Views: 1631
See also: Jochen's High voltage Page : Basic multiplier circuits
Power Electronics :: 16.03.2011 01:19 :: Orson Cart :: Replies: 5 :: Views: 1634
Also, be aware that:
- Motors need quite much current/power. If you plan using a voltage doubler made of diodes and capacitors, it will likely not work
- A power amplifier (linear amplifier) will be very little efficient, and thus wasting power a lot.
- The most efficient - but also most complex - circuitry would be based on a switchmode convert
Electronic Elementary Questions :: 01.06.2011 19:13 :: ted :: Replies: 5 :: Views: 649
The circuit is incomplete, as you need an additional switch at Vout connected to a reservoir cap to gnd.
Your problem is that you are thinking too much on voltages. For charge pumps, you work with charges!
At end of phase1, charge in cap is Q=C∆V=C(Vdd-0)
At phase2, charge in cap is Q=C∆V=C(Vout-Vdd)
Since no charging/discharging occur
Analog Circuit Design :: 07.02.2012 23:21 :: checkmate :: Replies: 8 :: Views: 688
voltage doublers rely on the fact that when you switch a cap in parallel with a load cap, you transfer charge to equalize the voltage based on V=Q/C. If the input cap is smaller it takes more time to reach the same voltage but less current. ∂v = I/C ∂t . Since both caps share the same rise time ∂t and (...)
Analog Circuit Design :: 10.08.2012 09:48 :: SunnySkyguy :: Replies: 18 :: Views: 1379
The formula you probably need is this one, to calculate ripple voltage from a load current:
Vripple = I / fC*( 2n?/3 + n?/2 - n/6 )
I = load current, amperes
f = frequency (50Hz, 60Hz?)
C = capacitance, farads (identical for every stage to preserve our sanity)
n = number of multiplier stages (that is 1 for a doubler)
Analog Circuit Design :: 13.10.2012 11:13 :: FoxyRick :: Replies: 5 :: Views: 400
It seems like you are confusing amplifiers and voltage converters.
Analog Circuit Design :: 04.03.2013 03:59 :: FvM :: Replies: 9 :: Views: 278
For a 555, 50 mA load is too high when you feed a voltage doubler. You will need a transistor output buffer for such load. You can use a two-transistor stage, PNP/NPN, like used in audio amplifiers.
Analog Circuit Design :: 08.05.2013 07:15 :: jiripolivka :: Replies: 6 :: Views: 450
I was trying to figure out this circuit but could not figure out its operation.
I had done a simple simulation, it seemed to work as per intention, i.e. a DC voltage doubler/multiplier?..
Can somebody help me understand how it works and its circuit tradeoffs.
BTW - this is not the typical flying capacitor/switching diodes circuit. its only
Analog Circuit Design :: 08.05.2013 21:34 :: faisal78 :: Replies: 5 :: Views: 465
PSU Designer II is designed to help you with the design of simple linear (unregulated) mains power supplies, as often found in tube amplifiers.
Rectifier types: Solid state, Vacuum tube types 5AR4, 5R4-G/GY/GYA/GYB, 5U4-G/GA/GB, 5V3-A, 5V4-G/GA, 5Y3-G/GA/GT, 5Z3, 6AU4-GT, 6AX4-GT/GTA/GTB, 6CA4, 6D22S, 6DE4, 6X4, 6X5/GT, 6W4-GT
Professional Hardware and Electronics Design :: 16.09.2001 18:25 :: Robin Hood :: Replies: 0 :: Views: 2242
i have a Character Display 4 x 20 - 20 ° +85 °
with a voltage doubler on board.
i need a shematic for temperature compensation
for the Contrast of the Display
the voltage range is 0 V till 5V
Can somebody help me
Professional Hardware and Electronics Design :: 07.06.2002 10:37 :: Blubb :: Replies: 2 :: Views: 1263
to generate high voltage i thiunk the normal flyback topology is not sufficeint as u will ned a huge number of winding in secondary
but as in TV horizentalor as in Spark ignition there's a good ways to generate those hiugh voltages
this way depends on resonance , wher the charged primary inductor in flyback transformer resonates with a capac
Professional Hardware and Electronics Design :: 20.11.2003 16:21 :: mtawab74 :: Replies: 3 :: Views: 1579
I think you should use a high frequency transformer to step up the voltage to get the best result. But I don't have enough experience with that.
Another solution might be using a voltage doubler circuit with non-polar capacitors and fast diodes. The driver circuit should work at about 10-50 Khz??. You should choose the capacitor values (...)
Hobby Circuits and Small Projects Problems :: 04.02.2003 04:21 :: betanorm :: Replies: 6 :: Views: 3634