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Convert 5v 3 5v

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221 Threads found on edaboard.com: Convert 5v 3 5v
I want to find a circuit to level translate the output of the coil (12v) to the input of a microprocessor.
I have to convert 3.2 volts to about 4.5 volts. so if i use a buffer chip say 74LS07 , i can connect its VCC to 4.5v supply n then supply the input of buffer with a 3.2v signal. will i get the output as 4.5 v? thanks Sami
Hi all I want to convert the PWM signal 0.8v - 4.5v to 0 to 10v .here i have attached my schematic gives 10V output for 0.8V and 10V output for 4.5V ..
As yours is a analog voltage input in the range of 0 to 10V I guess. convert this to 0 to 5V with the help of instrumenation amplifier with a gain of 0.5 and feed the output of it to the ADC. It will be the better way to do the level conversion of an analog signals.
It's correct to use a 250 ohm shunt to convert 4-20 mA to 0.5-5V. But the resistor isn't connected correctly in your diagram. It has to be connected between ground and analog input pin with the sensor output current feed to junction of resistor and analog pin. You should also include the ground connection of the sensor in your diagram and clarify i
Hi everyone, i have searched the forum and found several threads that discuss the opposite, ie +/- 5 to 0-5v etc but haven't found something for my particular problem. I am just after some direction in solving a design for a video interface to an ADC. The video pulse is 0 to -3v and I need to convert the pulse to +5v to -5v to give full re
How do you plan to convert the 3V to 9V efficiently? Is 3V the MPT operating voltage (max power transfer) or the open circuit voltage and short circuit current at max solar input power? I assume you phone uses 9V input down to 6V? Is that a Lithium rechargeable 9V cell? I think a 1N4100 (not IN4100) is a 7.5V zener and the
A ferrite cored transformer works best at medium frequencies and certainly not DC so you need to convert your 5V DC to at least 5V AC at maybe 50KHz before the transformer will work. It can be a difficult topic and not easy to explain in a few words. Do some research on SMPS (Switch Mode Power Supply) for ideas on how it works. Brian.
Hello everyone... I'm studying Electrotecnics Engineering and we are going to program an 8051 compatible micro controller. The DS89C450. I already built my electronic circuit and I'm using an FTDI 5V to convert RS232+MAX232 into USB to communicate with uC and I'm also using a crystal of 110592MHz. I wrote a small program just to test thing
0A =2.5Vdc AC swings around that , since this is a single supply IC using 5V To convert to DC use a precision rectifier Design with OA and diode.
C5/R15 will cause malfunction of the circuit. Negative halfwaves are clipped by the input protection diode of the ADC input. The most simple solution is to omit the highpass, send the 2.5V centered AC signal to the ADC and process it in a suitable way. If you want to convert the AC current to a DC voltage in hardware, you need active rectifier c
Dear All, I want to use I2V converter circuit which will convert 4-20 mA to 0-5VDC. I dont want to use 250 ohm resistor which convert 4-20mA to 1-5VDC.... Plz suggest me any I2V converter circuit which can convert 4-20mA to 0-5VDC exact...
What is the logic family you use? How many signals do you need, and which direction? There are plenty of level converters available, but you may have problems finding DIP variants.
I am using lpc1768 arm chip to generate PWM signal, but the ic supply voltage is 3.3v so the PWM amplitude is also 3.3v, how can i convert the 3.3v PWM signal to 5v PWM signal @ 20ma current rating to run stepper drive.
how can i convert my adc value to Milli-volt in the range of 0-5000mv that is 0-5v my adc_value changes from 0 - 1023 for example my adc_value is 1023 i must get 5000mv how can i do this i am a beginner of c kindly help thank you mv_value = (5005 * adc_value) / 1024;
Dear Sir, I want to convert 4-20mA to 0-5V using op-amp. Can anyone have circuit diagram for that? Nirav search with google by current to voltage converter and you should use instrumentation amplifier.could be a little bit expensive more detail it helps zeyad
A voltage divider will do the job. Or you can you level convert chip.. Directly connecting AVR to eeprom will damage the eeprom
I want to convert the output from DSP TMS 320F2812 (3.6V) to compatible with TLP250 (+5v) what Digital IC family to be used as buffer either 74LS of 74HCT also tell me what is the difference between both? I connected 74HCT04 my +5V power supply heatup
Make a register to count up/down with switches. Eight bit is easy with pic. Make it available on port. convert to voltage using DA or simple R2R converter. Now you get reference voltage. Drop 60V to 5V range using potential divider. Feed these two voltages to comparators of PWM generator which drive a buck converter. The 60V is sampled from (...)
Hi I wanted to use LM35 temperature sensor . The range is from -55 degree celsius to 150 degree celsius. I want to interface it with ADC 0804 for converting analog voltage into digital output. ADC has 8 bit resolution. How do I choose the reference voltage and how to do calculations for reading the complete voltage range. The output v
Hi, As said you use the PWM output but with a R/C to produce an analogue voltage from the digital 5v
I am using PIC16f877a and i want to convert the 0 to 100v AC to some proportional DC of 0 to 5V range. Can anybody help me in this conversion circuit. ????
Hello, I am trying to develop a weighing scale application using 8051 and NAU7802 ADC. So far I am able to get the counts from the ADC. I am using a 10Kg, 2mV/V Loadcell, with 5V excitation voltage. For the ADC I am using a reference voltage of 4.5V. The ADC is a 24-bit one. My question is, from the ADC counts, how do I convert them to we
Which compiler you are using. sample program available in your installation location itself... If you want to measure average voltage, you need to rectify the AC in to measurable DC level (0-5V DC). Connect the DC voltage to the ADC input & you can get the corresponding digital value. If you need RMS voltage, convert the AC into DC & take multiple
Hi I want to simply drive a relay(5V) via a tiny45 (and of course a 2N3904 to provide relay current). the point id that the power supply is 12V and I used a 7805 to convert 12V to 5V. the problem is that the circuit works properly when I use a linear power supply5V(and omit thr regulator) and the circuit consumes 100mA,but when I use the regulator
I'm designing DC/DC converter for low power application of up to 50 Watt using MOSFET half bridge configuration. MOSFET will be supplied with 325V (dc) which I've to convert into 1.5v(min)-50 volts(max) at isolation step down transformer's secondary. Please suggest me gate driver ICs for 800V. plus any IC with inbulit isolation? Can you sug
Hi all, At first, I wanted to use '245 to convert 5V signals to 3V3, uni-directional, direction A to B. Input signals may be floating, so I've added 10k pull ups to 5V on side A of '245. Now I need it to be bi-directional, but I don't know if the 5V pull ups will harm the 3V3 outputs on side A? In this
Is it a current loop output ? If so, then you need a proper resistor to convert the current into a volatage for the 8051 to be able to "read'. Other than that, there is no "fundamental" reason why it shouldn't work. How do you know the 8051 is not 'detecting' the voltage ? Maybe your code is wrong ??
Your specification is somewhat vague. Are you trying to run the DSLR and/or hub on 120V by boosting 12V to 120V or are you trying to eliminate 120V and convert 12V directly to 7.4V for the DSLR and 5V for the hub. I'm not sure what you mean by '120v dummy power', please explain. A USB outlet is (should be) limited to 0.5A but something drawing
It sounds as though you want to construct a project which consists of three functions: 1) convert mains AC to 5 VDC. 2) Step 5V up to approximately 15 V, to charge a 12V battery. 3) Stop charging the battery when it is full. Resume charging when its voltage drops. (Charging may be a trickle rate.) Is this correct?
... I need an ATX power source ... what exactly do you mean by this ? Does this mean that you need to convert a 19-60vDC to multiple outputs @ 3.3v, 5v, +12v, -12v ?
Hai Friends, I got output (5v to 10v) from circuit 1. I need to give this voltage to circuit 2,But circuit 2 input max voltage is (0v to 5V). So how can i convert (5v to 10v) into (0v to 5V). Please Help.
Sensors are not calibrated to ADC input range. ADC input range is 0 to 5V for 5V uCs and 0 to 3.3V for 3.3V uCs. Sensors can give voltage o/p or current o/p. If it gives current o/p then you need to pus a load resistor to convert it to voltage o/p for inputting to ADC of uCs. Provide the link where sensors are used with voltage divider to get bett
Hi, Your 0 -5v adc result is in 1024 steps, so to represent 0 -30v you must divided the 10 bit adc result by 34.13 You then use an ascii converter routine to convert that value to ascii characters suitable for displaying on the lcd.
Hello I have seen this article and I was thinking how could I convert it to regulate lower voltages like 2.5v and even less. I am thinking of using a fed in depletion mode. I also do not like the LED there, can I replace it with a zener or another transistor? Any thoughts?
No pins of 8051 can accept analog voltages. So you need an adc converter. If it is a matter of reading the applied voltage only, then why don't you rectify the supply. This way you can rule out the negative half cycle... Use a rectifier & a good filter, convert it in dc, read through adc, multiply by 44( if step down is 220v - 5v) & divide by 1.414
Could anybody help me out on below issues : I have dc adapter 5V / 1A.. I need to convert it to a variable AC source of having 50 Hz Frequency. Is there any circuit available or any suggestion. The above circuit is needed to make a variable low ac current in mA (<15mA) with 50 Hz frequency so that I can debug using micro controller.
The best thing for you to do is to convert the 12V 1.2A to 5V 1A and then use a current limiter or there is a circuit in the datasheet of LM78XX that incorporates output current control. Check the datasheet.
hi i made a little project based on pic 16f8777a to convert a analog pot movement (from zero to 5v) to binary value on 8 led attached to portd. Everything works pretty fine and i want to do a modification that when i rotate the pot the led lights up linearly like a progress bar. i use assembler to write my program and i use proteus to simulate
one method is convert your ac to dc using rectifier and use voltage divider circuit to convert 230/110 dc to low voltage (2 to 5v) and read by a micro controller or you can use some comparator circuit for find the voltage
I need to: - bi-directional convert two systems, 3.3V and 5V (tolerate up to 6.5V). - auto sense i.e. no direction selection. - work from 3V upto 6.5V supply. - Convet with minimal current usage. - Work upto 115kHz. Solutions Ive investigated: Use NMOS FETs as per the I2C solution listed here:
If you are using a switched type DCDC converter to convert 12V to 5V you can theoretically get 5V at 5A. Max Power input = 12Vx3A = 36W. Max Power output = 5Vx5A = 25W. You cannot use a linear converter since the 12V adaptor cannot handle more than 3A.
First you find out what is the maximum current rating of the cockpit. If it requires 4 nos of AA batteries, then I guess voltage rating is 4 x 1.5v = 6v.... You can use a DC adapter. Say, it requires/consumes 800mA of current. Then you can use a 1A DC adapter. But, here is the catch.... Mostly, DC adapters have transformers of RMS values. T
LM317 might also have a drop out voltage which will not let you convert from 6.5V to 5V Check LM2576 Switching voltage regulator.
Hi, I want to control a 12 Volt output with a microcontroller PIC18. The output of PIC18 is 0V or 5V. I want to convert it to 0V or 12V. I have searched a lot and the cheapest way to make it is with two transistor. The 0/5 Volt output controls a NPN transistor and this one will control a PNP transistor. I have tried it with real components and
Thanks for your reply ZASto. I used one diode for half wave rectifier,two resistor for voltage divider and one series resistor for current limiter,connected to PIC's Analog input pin AN0 and read ADC value.But I don't know how to convert adc value to get actual AC voltage. I used this formula (volt per count = 220/adc count at 220v) to get volt pe
yes.. my circuit requires +12v and -12v connected to it.. 200mA will be enough for my circuit.. Everyone and their dog sell these days (3W) dc-dc mini-modules that can convert input voltage (5V, 12V, 9-18V, etc) to output (12V) @ 250mA ... The output is isolated so it can be added to the input voltage as negative
Hi all, I want to convert 5V (USB) to 3V to power a microcontroller. I generate the 3V using a voltage divider and want to buffer this voltage. So i need a DC buffer. I know it is possible to implement this using an opamp. But i was wondering what kind of topologies are there based on transistors (BJT's or FET's). Thank you in advance.
VDD is for Digital circuitry and vref is a reference supply for analog front end to convert analog signal to digital.
Hi, I'm trying to use a TXB0108 ( ) bidirectional logic translator to convert 5V to 3.3V and vice versa. When I send a 5Vpp time-varying digital input (like a square wave) to the 5V side, I don't get the same signal at 3.3Vpp on the output side. What I get is a signal that toggles with the input, but is only