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# How To Increase Voltage 12v Dc

1000 Threads found on edaboard.com: How To Increase Voltage 12v Dc

## how to increase voltage across a 12v dc motor

i am tryin to make a circuit through which i have to control a 12v dc motor. i am supplyin a 12v dc i/p. what should i do without using any transistor r amplifier to run a motor when light falls on ldr ??? That depends upon how you like to control your motor with LDR. options:- 1. Just on - off the motor in pres

## How to increase voltage 5-12?

Hi This is Tasbir. I want to know how it would possible to increase 5-12v? Which diagram will help me for that objectives? Plz help me by sending email to rinotasbir@yahoo.com Regards Mr. Rino Tasbir

## How to increase the volts from source DC (PC source)?

how to increase the volts from source DC (PC source)?

## How to generate a -12V DC voltage?

Could anybody help me to understand following parameters? any schematic diagrams?

## how to make a 12v dc to 5v dc simple circuit design

There are a lot of choices from very simple (resistor divider or zener diod reference) to complex step down switching regulators. The essential question is how much current (and/or power) you need at 5V side. Reply please. Regards DDS

## how to increase the voltage output?

i would like to increase my voltage output from my input from for example 5V to 12v.... so can i use voltage regulator voltage regulator used to increase voltage output? is so, how should i connect the 78LS12?? thx

## How to drive a 12V DC fan with a microcontroller

hi guys, how can i drive a 12v dc fan with a microcontroller in the most efficient way.

## How to increase the torque of a motor at constant speed and voltage?

how to increase the torqu of the motor at constant speed and at constant voltage? increase the current.

## How to increase the settling behavior of Vref1 and Vref2 using buffer?

if i want to design a voltage reference which generate voltage of 1.2V and 0.6V, before connecting to opamp,i use a buffer to enhance the driving ability of Vref1(1.2V) and Vref2(0.6V),but Vref1 and Vref2 settles slowly(clock cycle:66.66ns), i increase the GBW(through increasing current) and PM respectively(dc-gain: 65~73dB),but it only (...)

## how to increase gm OP voltage gain

we all know two stages OP AC gain= gm x ro but if we design a one stage OP which only has gm, how do we get the AC voltage gain ? and how to increase the gain? If you have only gm than there is no voltage gain... gm unit is A/V Your mosfet has ro, no matter if there was one or two stage amplifier.

## How to set the driver DC voltage?

Hi Guys For most of the voltage bias points, they connect to the gate of CMOS, so drive infinite load, but how to set the driving DC point. For example, you have a battery of 2V, your circuit working voltage is 1.2V@2mW, so how to set the DC voltage in this case. The only way I can think is to make the (...)

## how to increase the out put of this ac to dc inverter for 20W flourescent lamp ?

can any plz tell me how to increase the out put this inverter, its giving 180v ac @20 mA. i need to light 20W energy saver with

## hii how to increase the impedence

hii , iam designing xtal osc. and i need to increase the impedence (-ve) to get enough gain to excite the osc. so , i removed the xtal model (2 branches of l, c, r) and i added current source (horizontal one) dc=0 , ac = 1A and i measure the ac voltage drop across this source now , it is -ve value (+fb ) but it is value is too small to excite

## How to increase the output current of a PV panel?

I have a PV panel which produces open cirucit voltage of 7.7 V and the maximum output current is 14.8 mA.however at a sunny day the best case is I get a current of 5mA .The optimal output is at V=5.9V and I=12.6mA . Do you have any not complicated idea on how to increase the output current (since it will charge my (...)

## how to increase the input impedance for a ring oscillator

hi all I am designing a ring oscillator, working at 2.5GHz. The input impedance looking by the control voltage is only 100m ohm. I would like to know how to increase that. My ring oscillator is a current saturated sigle-ended inverter ring oscillator. And the control voltage is applied on the current source above and (...)

## How to generate a -12V DC?

the p channel mosfet need a minus gate voltage..... not quite understood... could anybody explain or draw a schematic diagram? many thanks.

## How to increase the bandwidth on this topology?

hello guys, anybody got any idea how to increase the bandwidth on this topology. I think its limit is determined by Rd and the output capacitance (which isn't seen in the picture but is 1p ). I want to use this topology for a DECT system, so its bandwidth needs to be 1.9G . But with the gain i want i can't reach the wanted bandwidth. Anyone

## How to increase the loop gain in a two-stage opamp (cmos)?

Hi. Is anybody of you have idea how to increase the loop gain in a two-stage opamp (cmos). My circuit is the simpliest two stage opamp. Now i have 55db and i want to reach 75db at least. Thanks one way is simply increase the gm of the first stage input transistors pair, by enlarge the W/L ratio, not by adding the bias

## how to increase amplitude output of inverter ups?

I build 1 inverter use 2 MOSFETs ,input 48V ,but output AC only 15VAC,how to increase output ?.I increase PWM but appear DC in output??? Please help me,thank very much You should post the schematic of your inverter, and the design of the output transformer otherwise it is very difficult to help you. stefano

## L298N to control a 12V DC motor driver - problem

i have tried using L298N to control a 12v DC motor which required to drive 1.44A, but i found that the output of L298N that generate to the motor tend to drops to half of the voltage that i supplied to input pin of L298N, and the maximum voltage that manage to supplied to the motor is only achieve around 3V, while i required 7~8V for the (...)

## how to increase curent in power supply circuit?

i have made the 15v 1amp power supply.but i get only 206ma current from it. can u please help me how to increase current in it? i have used 12-0-12 1a transformer to get the current but there is no change in it.plz reply me soon. check this forget to pres

## how to increase boost converter efficiency

Dear all how to increase boost converter efficiency??? what thinks i should i check ?? i need some good books / sites about the boost converter thanks alot bye

## How to increase voltage of a mobile charger?

Dear Sir, I have attached the schematic of the mobile charger. I want to increase the output from 5V to 12 Volts to drive LEDs in series. Should I increase the zener voltage or change some resistor voltage. Please guide me. I can also wound more turns in smps secondary if need arise or build a new smps transformer. (...)

## How to make 76V from 38V

Hi. My guess is that other pwm IC's is more suitable to do this. Anyway, the datasheet tells you how to increase voltage and power output using external transistors:

## How to increase the resolution of comparator in SAR ADC?

Hi, I am designing a SAR ADC with 12 bit and 2kS/s rate. The structure is general and simple. But when I am considering the comparator(preamp+latch+buffer), I found it only can sense about 5mV voltage difference. In 12bit ADC it needs to sense about 0.3mV voltage difference, so how to increase the resolution of this (...)

## How to charge a 12V /40AH lead acid battery using solar panel ?

how to charge a 12v /40AH lead acid battery using solar panel ? solar panel 12v 50W/100W

## how to increase current

hello, herewith i am attaching the scahmatic of pwm here i get the variable voltage from 0 to 5v but i am not getting my current requirment is the how to increase the current?? i would like if you provide me the information with schematic. thanks. 109374

## How to increase UART/Serial Port on a uC ?

Hi, Does anybody have any idea on how to increase the number of serial ports on a microcontroller ? Currently, I'm having only a single serial port and I need another 2 more. Does anybody has any chip to recommend ? Or can the number of serial port be easily implemented on a CPLD ? Thanks Cheers,

## How to increase the drill holes in Orcad 9.1?

hello can u plz tell me how to increase the drill holes in orcad 9.1? i tried the drill layer but it didn't work!!

## How to increase the field strength of RF amplifier?

I'm a freshie in the RF field. My antenna's field strenght is insufficient for some of the card so I plan to add in an amplifier to the design. Theproblem I'm facing now is I do not know how to increase the field strenght without introduce the noise, phase shifted and losses into the signal? Is there any reference design i can refer or any advice

## How to minimize area in DC synthesis ?

how to minimize area in DC synthesis. Any switches beside set_max_area 0?

## How to add constraints in dc script to fix hold time ?

how to add constraints in dc script to fix hold time ? e.g. for multicycle 2 clock period

## How to increase a current used to control this step motor?

Dear EDAboard! I only have a Uln 2803 Ic ( max current :500mA) but i want to control a stepper motor (parameter 1.8 degree/step _ 4.4V _1.15 A) which use ULN 2803 how to increase a current use Tip 120.. to control this stepper motor Help me!!! ( schematics or ideal) thanks in advance!!!

## How to make a good DC motor circuit?

Hey all, may i know how to make a good dc motor circuit? I need the important component and why i must use it. Thanks for your attention :) What is maximum current of your DC motor? Read the specs of L293D, one of the easiest DC motor controller IC.

## How to increase the electrical length in this antenna design

30MHz - 1GHz fixed length of 1M max diameter of 5.08 CM no ground plane to speak of radiation pattern is not important only impedance bandwidth. matching unit is possible but cannot be elaborate. i've been looking at this for a couple weeks off and on. to increase electrical length i've envisioned a normal (broadside) mode helix,

## how to increase directivity for coupler?

I design a coupler with narrow bandwidth with coupled stripline,but found the directivity is poor(about 10dB),though the VSWR is good. I always wonder why the directivity was poor.And how to increase it ? to improve it try to do: 1) put capacitors at the begin and the end of the coupler 2) use overlay coupler 3) use s

## Help me to design a 12v DC to AC inverter

hai guys i need a help to design a 12v dc to ac inverter i need the circuit diagram

## How to increase used RAM in WinCE ?

hi all, well guys, u know that by default WinCE will assign only 46 to 48 MB of RAM for usage. even if u connect 128 MB, ur system will show only 46 or 48 MB of RAM. well guys does any 1 know how to increase that size to upto 128 MB?anyone whohas worked with Windows CE,pls let me know this issue.

## How to increase available power gain of a LNA?

Hi, Can someone please tell me how to increase the available power gain of a LNA? how to design a LNA that can achieve highest available power gain at operating frequency? Thanks, Chun Lee

## How to perform voltage summation in analog circuits?

I request information on how to perform voltage summation in analog circuits? I do not wish to employ op-amps and resistors but capacitors are preferred. I want to achieve Vout=V1+V2. Any ieee paper or so shall be gratefully acknowledged. Regards

## How to increase the unity gain bandwidth of a single stage differential opamp?

Hi Guys; I am designing a single stage differential opamp with no cascodes. I currently obtained a unity gain bandwith of 1.25 GHz with 0.18 CMOS process. however, I need to increase this value up to 6-7 GHz. Do you guys know how to increase the unity gain bandwidth of a single stage differential opamp? Thanks for help.

## How to increase phase margin of a single stage folded cascode amplifier?

how to increase phase margin of a single stage folded cascode single ended output amplifier.

## how to increase speed of current steering charge pump

I'm making a design of current steering CP. I can't increase speed to meet specs requirements . I used the design of Chang and Sanchez I can't meet the specs except by increase the bias current with total power of 2mW for the circuit. Please can any one help to realize the proper value of power for that design. and how to (...)

## How to increase the bacup time of the UPS without increasing its capacity?

hi everyone how to increase the back up time of the ups without increasing its capacity i.e can we use any external circutiary to increase its backup time

## How to increase Q factor of LC tank

Hi all, I'm wondering how to increase Q factor of an LC tank, If i change the reactance of the LC tank, won't be this affecting the frequency of interest? Thanks in advance Adjusting value on L and C affect frequency, but not if you make lower resistance in circurit, Q = reactance/resistance Only way t

## How to increase the BW of the Bipolar log amplifier

For a normal CMOS amplifier, we can play wif the Cap/Res as the F=1/RC. But im quite unsure on how to increase the Bandwitdh of the Bipolar LOg Amplifier. The cct shown can contribute about 100kHz operation. how to alter this circuitry for it to work at higher frequency?

## How to increase the current limit of L298?

how to increase the current limit of l298

## How to increase font size in a scanned material?

how to increase font size in a scanned material? I have hp scanjet 2400. Is there any special software to increase font size? Please Help me Thanks

## How to increase CMRR of a telescopic opamp?

Hi I want to know how to increase CMRR of a telescopic opamp .

## How to increase the drill hole size (Orcad layout)

Modify the footprint settings shown below,under the pad's accordingly are you will have none left to solder too.