Circuit designed please

£10-20 GBP

Completed

Posted

over 9 years ago

£10-20 GBP

Paid on delivery

We need to detect zero volts x-over (from sine wave input approx. 800Hz) using an optocoupler. Obviously this will detect 2 points per cycle, initially we will ignore one of them. Then we need to trigger the 555 (in monostable mode) duty cycle to produce a square wave pulse AND be able to control the duration of that pulse from say 50uSecs to 600uSecs. Finally, we need to fire an H bridge to amplify that pulse and deliver it to an energising coil whilst maintaining the pulse characteristics. We can buy the individual modules off ebay but We need help connecting it all together. 5x 4N35 Optoisolator / Photo / Optocoupler / IC 6 Pin DIP [login to view URL] OR 3 * SFH617A-2X OPTOCOUPLER 4 PIN DIP 5KV isolation 617 OPTO ISOLATOR DIL SFH617 [login to view URL] +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator [login to view URL] +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Dual H Bridge L298N DC Stepper Motor Driver Module Controller Board for Arduino [login to view URL] DC Motor Speed Switch Controller 10V 12V 24V Control Reversible PWM Regulator 3A [login to view URL]:MEWAX:IT&_trksid=[login to view URL] OR Pulse Width Control PWM DC Motor Speed Regulator Controller Switch 6V-90V 15A [login to view URL]:MEWAX:IT&_trksid=[login to view URL] +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Electronics

Project ID: 6276341

About the project

2 proposals

Remote project

Active 10 yrs ago

Looking to make some money?

Email address

Benefits of bidding on Freelancer

Set your budget and timeframe

Get paid for your work

Outline your proposal

It's free to sign up and bid on jobs

Awarded to:

@pranavsharma2504

HI! Your project basically consists of 3 parts: * Zero crossover detection; ouput to * 555 in monostable mode with variable pulse length; output to * H-bridge powering the coil I can design the circuit for you and send you the schematic within 12 hours of you hiring me. My bid cost includes required research, circuit design, schematic building, part selection, and Bill of Materials generation. Needless to say, I'm an expert at this work and have earned good reviews so far. However, before beginning the project I would require a 5 GBP milestone to be completed to make sure you are an honest employer, as you do not have any reviews yet. Sorry for this, but I have been let down in the past. Hoping to work with you at the earliest. Regards, Pranav

£18 GBP in 0 day