Voltage regulator 19v jobs

...phototransistor with the result that two simultaneous 5v pulses are generated. The first pulse shall be approximately 50ms in duration and the second shall be approximately 1000ms in duration. The two timer circuits within the 556 IC shall be effectively interlocked such that the first 50ms pulse may not be repeated during the 1000ms pulse regardless of any intervening trigger event. The supply voltage for the system shall be 5v. If practicable, the design shall include the following components: Texas Instruments model TLC556CDR IC OSC TIMER DUAL 2.1MHZ 14-SOIC, datasheet available at:; OR the Texas Instruments model TLC556IDR IC OSC TIMER DUAL 2.1MHZ 14-SOIC, same data sheet as above. The

We have 2 Matlab Simulink Models of DFOC & IFOC based 3 Phase Voltage Source Inverter Fed Induction Motor Drive. We need it to be fine tuned by calculating the parameters value in each block to lower it's THD within defined parameters. Also, need assistance in Technical writing for its Detailed report. It's needs to be done in 5 Days. **Sticking to Timeline is of utmost importance.** For Further details about the project, please DM. The Fees is fixed.

...and implementation Master slave, central etc. • Strong understanding of Client algorithm requirements and development of Client techniques for algorithm designs • Must have strong knowledge in sensing, SOC, SOH, SOx, charge and discharge control, thermal management and design for DOD specifications • Strong knowledge of testing batteries for UN, UL, IPC, SAE and FMVSS standards • Must have high-voltage and battery safety experience • Must be able to design and develop DVPV plans for battery cells, modules and packs to a given target certification standards • Must be able to test batteries and be able to analyze data and develop design optimization process • Must have a very good knowledge in battery thermal management such as intercellular cooli...

3.7v, 4400mah. Need a small pot to run a small fan. Need to go from 0 to full voltage.

It’s based on calculations with cosmol values and some matlab I will attach some files go through them then give me a message

I need a logo for my low voltage company. Our company name is "Inspired Voltage" but we brand as "IVolt" We deal mainly with low voltage wiring, security and media systems so a "modern inspired" look is what we are going for. I have attached our current basic logo for reference, but we welcome all creative inputs and submission's that you may have to offer. Thanks!

need a schematic drawing drafted of a circuit comprised of approximately 6 components (MCU, array of micro LEDs, hall effect sensor, power supply and regulator). Component spec sheets will be supplied.

The farmer can start or stop a Three-phase motor using miscall or by using SMS. The system provides over voltage and under voltage protection with overload protection.

We need to prepare a business case for outsource some of the function of our company. Business case is required to get regulator approval.

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1. Set up a free account at: 2. In the search box type Gas Regulator 429 suppliers should come up. 3. To the left you will see filters under Company Type, click on “Manufacturer” (This will reduce the suppliers listed to 181 suppliers) 4. The spreadsheet should match the existing format. No hyperlinks, and the website format should be (no http:// or). Capitalization should also match the existing spreadsheet entries. 5. Each entry should take 1 minutes per entry . +20 minutes setup account and cleanup spreadsheet. 6. Screenshots are below to give examples of how selection on the website should look. 7. The job should take 3 – 4 hours and pays $3 per hour. 8. Job needs to be completed within the next 10 hours Screen shots in Word doc Excel

...external water temp) , a pressure transducer to read outside water pressure ( to be scaled to estimate depth of robot underwater) All data on the robot must be fed back to topside Raspberry to be displayed in a GUI on the touchscreen, Along with live video feed, date displayed will include in a heads up style … Water temp, robot temp (inside), Water detection status inside, Depth, Onboard battery Voltage , Led Lights on/off. All communication between topside unit and Robot will be done Via a Cat 5/ 6 cable at approximate length of 120-150 FT in length. Battery's will be on board of the Robot, to power electronics and thruster motors and servos. I am open to design changes as needed, to simplify or make easier, main points are Live video feed, 4 thruster contr...

Design a low-voltage, high-current, shunt self-excited DC motor for an industrial facility.

An experimental MEMS device will operate at a high frequency, and the resistance of ...MEMS device consists two IDTs (transducers). Each IDT has effectively R < 0.1 Ohms. The IDT image is in deviceBreakdown.jpg. Requirement: Design the auxiliary circuit so that Req is 50 Ohms, plus or minus 5 Ohms. Inputs: The inputs to IDT1 and IDT2 must have a sine signal with a frequency of 30-35 MHz and VPeak of 27 V (V max). Vpp (V peak to peak) is 56 V. Alternatively, it may have a higher voltage may be 33 VPeak and 66 Vpp. The total power dissipated is 1-1.6 W. Complications: Due to high frequency, there is also potentially inductance L and capacitance C while the device is active. How would you design the auxiliary circuit such that Req is 50 Ohms (+/- 5 Ohms) while the device is act...

Selling my power guard pcb design and programme file. Using for Fridge using pic device. small circuit and components. High voltage and low voltage protection, LED indicator. Unable to copy No need to change voltage range. ( Fixd voltage range ) High voltage 250v Low voltage 185v D.M.W Electronics $ 82

Bi-directional control for a single capacitive load Support voltage from 1 to 1.5v. Maximum current up to 80A peak, reduce to 60A gradually according to temperature. 18 KHz switching frequency for quiet operation. Reverse polarity protection. Protection of overvoltage and current. Input voltage 5v /60A Buttons for quick testing. LEDs for motor output state. Overcurrent protection with active current limiting. Temperature protection. Undervoltage can controlled using an analog joystick or microcontroller (PWM, Serial). MOSFETs are switched at 18 KHz to ensure quiet operation and no annoying whining sound. Besides, it also equipped with a microcontroller unit to provide smart features such as multiple input modes and current limit and thermal protection.

We are a university research team developing characterisation methods for solar cells and modules. For one of our applications we require a circuit that can switch a string of solar (PV) modules between two states: 1) OFF (open circuit), and 2) ON (short-circuit) with a frequency of at least 100 Hz. Circuit specifications: - Maximum system voltage is 1500 V (when switched OFF, i.e. solar panels in open-circuit, current = 0) - Maximum system current is 10 A (when switched ON, i.e. solar panels in closed-circuit, short-circuited) - Minimum switching frequency is 100 Hz - faster is better - The circuit needs to be battery operated (maybe from a small lithium iron battery) - The switching signal is a digital 3.3 or 5 V signal and needs to be electrically (galvanically) isolated from t...

The objective of this project is to design and implement an ac voltage controller for speed control of induction motor drive. The induction motor speed can be adjusted by varying the voltage applied to the induction motor. The ac voltage controller is a power electronics based converter for converting fixed ac to variable ac. Power electronics (TRIAC) can be used in the converter for varying the voltage applied to the motor by changing the firing angle using Microcontroller (Arduino).

Purpose of the project is to generate voltage sag at specific cycles and degrees and make an analysis on how it effects the induction motor.

Rating of 3phase generator is as follows- MVA-605MVA Rated pf=0.85 lag Rated voltage- 20 KV Rated current-17465 Direct Axis Synchronous reactance(Xd)= 193% Quadrature axis synchronous reactance (Xq)= 234% Negative Sequence reactanceX2= 19.4% Zero Sequence reactance = 12.6% Resistance of stator winding per phase = 0.00131 ohm This 3 phase Generator is connected with three single phase transformers. Rating for R phase transformer is as follows- MVA-200MVA Voltage ratio= 21KV/420KV Vector group- YNd1 Short circuit impedance(positive sequence) = 13.5% Zero sequence impedance= 13.5% whereas Ratings of other Y and B transformer are same . which is as follows MVA-200MVA Voltage ratio- 20KV/400KV HV current = 873.6 LV current =10083 Vector Group-YNd1 Short circuit imp...

We are making a IOT board with Particle B523 unit at the center. We need help with design...battery, and the DC input is used to charge the battery This is our needs: DC input 5-24V – it could be solar panel (6v) or external power supply 12v/24V Battery connection for battery-pack – we have not decided with battery type yet – you can help here Output: 3.3V for nRF52840 controller 3.8V for Quectel EG91-E modem module (2A max) Then we need a 16-24v output for some sensors (4-20mA). This regulator needs to be able to shutdown the output, to save power when the controller is in sleep mode. Particle IO have made a simpel board with the bq24195 PMIC circuit - but this have a DC input of max 17V, and we need 24V -

Bi-directional control for a single capacitive load Support voltage from 1 to 1.5v. Maximum current up to 80A peak, reduce to 60A gradually according to temperature. 18 KHz switching frequency for quiet operation. Reverse polarity protection. Protection of overvoltage and current. Input voltage 5v /60A Buttons for quick testing. LEDs for motor output state. Overcurrent protection with active current limiting. Temperature protection. Undervoltage can controlled using an analog joystick or microcontroller (PWM, Serial). MOSFETs are switched at 18 KHz to ensure quiet operation and no annoying whining sound. Besides, it also equipped with a microcontroller unit to provide smart features such as multiple input modes and current limit and thermal protection. This pwm have the...

The task consists of the following 1: Upgrade our website from magento 1.9 to Magento 2 2: Fix Checkout, must be smooth and easy to navigate. (All payment gateway should ...result and must have Filters 4: Update all extenstion 5: Update current Theme from Magento 1.9 to Magento 2.0 6: Fix CSS in the website 7: Clean up the look of the product page 8: Integrate Trustpilot / Google Reviews 9: Site should be SEO ( Search Engine Optimized) 10: Each category should have all the Filters on the side that can be use to filter products, Price, Product Type, Brands, Category, Voltage, Availabity etc 11: Website should work on multi currency and Multi Languague Link to our website is: For inspiration for please have a look at the following website. Thanks Dapetz Ltd

I run a small low voltage team that deals with high end audio, video and control processors. I have a pretty small job next week for the State of Oregon that will need some Crestron programming integrated with Bi-amp for in house audio/video along with remote viewing using Polycom. Crestron will either have a touch panel for control or ran through the X panel on a couple pc's to control system. This would need to be completed by Thursday of next week (12/3/2020). Programing can start as soon as Monday (11/30/2020). Install is near downtown Oregon City. I don't mind the work being done off site as long as it loads boots and is usable by Thursday with enough time to make minor changes or dialing in the system (i.e. the sound). If by chance you recieve my cell #, th...

Bi-directional control for a single capacitive load Support voltage from 1 to 1.5v. Maximum current up to 80A peak, reduce to 60A gradually according to temperature. 18 KHz switching frequency for quiet operation. Reverse polarity protection. Protection of overvoltage and current. Input voltage 5v /60A Buttons for quick testing. LEDs for motor output state. Overcurrent protection with active current limiting. Temperature protection. Undervoltage can controlled using an analog joystick or microcontroller (PWM, Serial). MOSFETs are switched at 18 KHz to ensure quiet operation and no annoying whining sound. Besides, it also equipped with a microcontroller unit to provide smart features such as multiple input modes and current limit and thermal protection.

I have few IoT components already and i would like help in build an Iot solution to read voltage/amps

Bi-directional control for a single capacitive load Support voltage from 1 to 1.5v. Maximum current up to 80A peak, reduce to 60A gradually according to temperature. 18 KHz switching frequency for quiet operation. Reverse polarity protection. Protection of overvoltage and current. Input voltage 5v /60A Buttons for quick testing. LEDs for motor output state. Overcurrent protection with active current limiting. Temperature protection. Undervoltage can controlled using an analog joystick or microcontroller (PWM, Serial). MOSFETs are switched at 18 KHz to ensure quiet operation and no annoying whining sound. Besides, it also equipped with a microcontroller unit to provide smart features such as multiple input modes and current limit and thermal protection.

Purpose of the project is to generate voltage sag at specific cycles and degrees and make an analysis on how it effects the induction motor.

i have model already built but it is missing two things only, - Torque Load Graph - Speed Rpm Graph Purpose of the project is to generate voltage sag at specific cycles and degrees and make an analysis on how it effects the induction motor.

A bespoke hardware interface to the DE0-nano board is to be designed. Requirements: This interface is to use appropriate voltage levels suitable for the DE0-nano and should consist of the following: amber and flashing red LEDs (to control the traffic), red and green LEDs (to control the trains) and separate red and green LEDs (to control pedestrian access to the crossing). The whole sequence is initiated by a press-button (in the signal box) and terminated automatically by the train (once the line has cleared).

Gerber file will consist of a voltage sensor, NRF module, atmega processor, 1.5 inch LCD screen, and step driver. One has to arrange these things in minimum space try to make the system as compact as possible.

Designing a circuit/schematic for dimmable LED driver which would dim the 18W LED light to 30% wattage (i.e. 5W) upon external signal from motion sensor. Input voltage 230V AC. Output LED wattage 18Watt. Series parallel LED matrix of 26 Series x 5 parallels = 130 LEDs of 0.2Watt Each. Parallelly the same circuit also generates 8V, 5mA power supply for the microwave sensor PCB. Pls see the attached snap of the circuit for the reference. The work is of reverse engineering, make detailed LOM and Schematic drawing. More details available on request.

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Hexacopter PDB specs ( 6ESC motor) : - Input voltage - 6s ~ 12s max current - 60A BEC - 12V AND 5V 2 additional 6s interface for buck circuit

...led by a PWM MOSFET, so i need: --- A) 4 separate "channels", where each channel is composed by: ------- GPIO --> Gate Driver --> Power MOSFET ------- each channel has a separate +/- input screw terminal for input power supply (5-30V al least) and a separete +/- screw terminal for strip led output (output voltage follow input) ------- in total the board will have 4 +/- screw terminal for inputs and 4 screw terminal for outputs ------- each channel MUST support AT LEAST 10A at any voltage used ------- i expect some kind of protections for inputs and outputs, SECURITY IS A REQUIREMENT --- B) 6 screw terminals attached each one to a GPIO. Each terminal will be connected to an external push button. --- C) +/- screew terminal used to power-on the shield and the ...

Hi N Chandra S., I need some help in designing a basic low power low voltage amplifier. can you help?

Design and simulate a power supply that is able to take 120 Vrms input signal and deliver a nominal 5VDC output at 25mA with ~1% ripple at the rectifier (e.g. before the regulator). Note that your power supply must contain a rectifier and a regulator circuit. No restriction is imposed regarding which rectifier topology to use. In your design phase, you can use any value of circuit component needed in order to make the equations work. However, once you have done this, go to a component website (e.g. etc.) and find real components that you could purchase and choose ones that are as close to your calculated values for your simulations (note the cost). In your write-up, make sure to: Compute all the equations that you need to and include

Design and simulate a power supply that is able to take 120 Vrms input signal and deliver a nominal 5VDC output at 25mA with ~1% ripple at the rectifier (e.g. before the regulator). Note that your power supply must contain a rectifier and a regulator circuit. No restriction is imposed regarding which rectifier topology to use. In your design phase, you can use any value of circuit component needed in order to make the equations work. However, once you have done this, go to a component website (e.g. etc.) and find real components that you could purchase and choose ones that are as close to your calculated values for your simulations (note the cost). In your write-up, make sure to: Compute all the equations that you need to and include

I would like to charge 32650 Lifepo4 batteries in a 12-volt system and pass ethernet through. Also DC input for charging without POE and if we could include a BMS with temp protection, over-discharge current, Overcharge current, and over-under voltage protections. I can always add this separately.

Need design, schematic, PCB design for 3 phase power supply. Brief specifications are: Type: Flyback SMPS (alternative SMPS designs are also Ok as long as they meet the specifications below) Input: 3 phase- 90 V AC P-P to 440 V AC P-P Power supply should also work on 240V AC single phase Protection: 6kV voltage surges and 10kV impulses Output: 5V 2A(max) Design should use components easily available in India Typical BOM cost should be around 200 Rs We are looking for a design which is already validated and working in the field. If you have designed a similar SMPS, please bid

...somene that can install a whitelable version of Waves Exchange on my AWS Ubuntu server for me. All you need to do is to rebrand it for me and include our logos. No other changes are required. My company is launching a blockchain and I am prepared to add ICO/STO token payments as well a 2% to 5% share in the business on top of the payments for this job. I have approval from te national financial regulator in South Africa, and will sare that information with you, so no worries as we have approval to run the project. Anyone interested should apply. This is a great opportunity as we will remain long time clients as well bring other projects for you as well. My company website is The blockchain is already installed, we just need the rebranded wallet and exchange for

This project will investigate and analyse the abnormalities in IM under Type A and B voltage sags using MATLAB/Simulink and further analyse the Type A and B voltage sags with different starting time and durations. In the end the methods of mitigation for the Type A & B voltage sags will be implemented.

We are looking for solutions and database complete to obtain data from to update our product data for a mirror website. We require scraping of the following: 1. Residential and Small Business 2. Building Automation and Control 3. Low Voltage Products and Systems 4. Solar and Energy Storage 5. Industrial Automation and Control We require all data from these categories for each SKU in these categories providing images and links for videos, FAQ, documents etc. We would also like to obtain facet search data if available. The total SKU count is approximately 25000 items. We are after a price to supply this complete in a format to update our current website Switchboardinabox.

...Lithium-ion, Lead Acid Automatic Battery voltage detection, 3.3V, 3.7V 12V,24V,48V and 72V (If possible) Number of channels where the batteries can be connected - 2-6 Max programmable charger current pro channel 5-100A (Charge Profile, CC-CV) Max Programmable discharge current pro channel 5-300A Programming interface - Touch screen How user enters data (can be done both from touch screen or from web interface): Step 1. User chooses no. of charge,discharge cycles, for example 1 means, one time charge and one time discharge Step 2. User chooses charge current Step 3. User chooses discharge current Step 4. User starts the cycle System shows in touch display: channel status (charge or discharge or idle) Charge/discharge current Battery voltage if charged ...

...fpga ( bcu 1525 ) - mining interface , UART-AXI "adapter" , that connects the bitstream to the pc mining program , that must contain several "submodules" , among which Monitoring module , Clocking module with glitchless clock changes , etc - pc mining software , that connects to nicehash and sends the job to the fpga , via the mining interface . the software must show temp, hashrate, dna, voltage An example could be find here, but its not really what we need , since our miner must be made for BCU 1525 ( VU9P ) . But I am sure parts of the project can be taken from there ( for example the scrypt implementation in verilog ) . Expected performance : 9-10 GHS , 200-250 watts We can discuss more details in private and I can add them to the

I need assistance with solving my PCB capacitive sensor issue. I am using an ADC (ADS112C04IRTET) to detect a voltage output from two coplanar electrodes, and I am receiving strange readings. The issue could possibly be due to ADC, or an issue with my schematic. I need a freelancer who is very experienced with circuitry, programming (particularly this ADC in Arduino), and preferably someone who knows about capacitive sensing. I am happy to test the recommendations given by the Freelancer on my system to verify. I am currently using an Arduino MCU to pull data from the ADC and display it in the serial plotter. I also have access to an O-Scope. I will only release payment after the issue has been resolved or a new schematic design is proposed. I will also send further sensitive deta...

Please only reply if you are an expert in this project. Hi, I need help with a project I'm doing on a power factor improvement circuit using PIC16F887, I'm running the simulation on Proteus before making a prototype. Facing issue on PF reading on the LCD display. The LCD should read current, voltage, and pf measurement of any load connected. I already have a code, so just need to debug and look through the code to find errors or mistakes to make it run and display the current, voltage, and power factor of a load, then improve the pf. Further details will be provided.

I have an offline flyback converter that functions, but needs some revisions. It's a 300W (250W usage) design with 85VAC to 280VAC input. Goes into a PFC stage, then flyback stage to isolate. Secondary side then has an avg. current mode buck that outputs to a high voltage high power LED array. I need someone to look at the design as-is and see if there are any standouts for UL/FCC approval. Additionally I'd like someone to help optimize and improve the design. Constraints are price and transformer selection. More details will be provided to the freelancers that ask and show that they have an understanding of offline power supply design.

Please calculate the following cluster's power consumption for two months. And provide practical options to optimize battery life. 1. one Arduino nano 33 BLE 2. one O2 sensor. supply voltage 4.5 - 5.5 v. supply current 6 mA (streaming 1 sample per second), 17mA peak. output type 3.3 V TTL level RS232 3. one CO2 sensor. 3.5mW, 3.3 V supply, peak current 33mA, average current <1.5mA 4. voltage shifter to jump 3.3 V to 5 V for O2 sensor 5. potential component that consumes battery life (converter to connect the battery with the arduino) The arduino nano connects to the O2 sensor, CO2 sensor, and the voltage shifter, and transmit the data wirelessly to a Nordic nRF dongle. The sampling rate for both sensors are currently 1 reading per second. The excel needs to pr...

I need to build a simulink model for this project. most of it is done i just need a few blocks to be made .