Home     Contact     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS     Terms of services     Privacy policy  
   
 Home      Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science   


<< Back to INDEX

An electronic gadget to silence loudmouths [Project]
posted June 19 2014 14:09.46 by spic0m




Charles Platt, a contributing editor to Make, presents an electronic gadget to silence loudmouths:

"Back in the early days of Silicon Valley, when bad behavior may have been forgiven a little more readily than it is today, a legendary engineer named Bob Widlar was so intolerant of defective parts and malfunctioning prototypes, he was in the habit of destroying them with a sledge hammer. This came to be known as "widlarizing" them. He also had a strong dislike of ambient noise, and built a device known as "the hassler" which worked by fighting sound with sound. If someone shouted at Widlar, the hassler kicked in and emitted a piercing shriek of protest. I'm going to suggest a circuit that you can build for under $15 which will do what the hassler used to do, although I'll be referring to it here as a Noise Protest Device.

Widlar wasn't interested in digital chips that use the 0s and 1s of binary code. Supposedly, he used to say that "every idiot can count to 1." He created analog designs, where the great challenge has always been to make an accurate, amplified copy of a rapidly fluctuating input signal. Many of the early operational-amplifier designs were pioneered by Widlar, and thus it seems appropriate that my Noise Protest Device uses an LM741, one of the oldest and most widely used op-amps."


Read the whole story here.

[Link: boingboing]
 
Share



You might also like...


Nice wooden project - Wooden book box [Project]

Awesome Guitar String Bender, Servo Actuated [Project]

PiPhone - A Raspberry Pi based Smartphone [Project]

An electronic gadget to silence loudmouths [Project]

Slow Dog Food Dispenser for the Gluttonous Dogs [Project]

The Perfect Safe will keep Kids Busy! [Project]

Breadboardable PIC32 Breakout/Development Board [Project]

Sealing electronics in silicone sounds like a good idea [Video]


<< Back to INDEX



Comments

  Name

  Email (shall not be published)

  Website

Notify me of new posts via email


Write your comments below:
BEFORE you post a comment:You are welcome to comment for corrections and suggestions on this page. But if you have questions please use the forum instead to post it. Thank you.


      

No comment yet...

Be the first to comment on this page!












 Contact     Forum     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS   

Site design: Giorgos Lazaridis
© Copyright 2008
Please read the Terms of services and the Privacy policy