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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by DeWilde

  1. D

    need help with PWM

    hi, im currently designing a switching power supply, the thing is that my input voltage changes about a +/-15%, so i need a PWM controlled by that voltage change, i really dont want to use IC's cuase im short of time, so i was thinking of using a 555, in the datasheet sais that the pulse's width...
  2. D

    building a 4 zone timed alarm

    I have a design challenge, i need to build an alarm with at least 4 zones, a waiting time before activation and has to run max with a 9 volts battery eficiently (no CMOS aparently), any help will be apriciated. :D
  3. D

    searching for a microcontroler

    i need to buy a micro (preribly a motorola 68HC 8 bits series), if someone knows a place that sells them (the cheaper the better :wink: ) please let me know. thanx for advanced :D
  4. D

    Need help, designing a wireless intercom

    Im currently designing a wireless intercom that will complete the telemetric system of the formula SAE, a College formula, racing car, whatsoever, the wireless intercoms i have tried so far lacks in range and noise filtering, if someone has a wireless intercom diagram, or an idea to enlarge the...
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