• Home
  • News
  • Magazine
  • Shop
  • Subscribe now
  • Forum
  • Service

Search

Products

My Elektor

Log in

Email:

Password:

Remain logged in

Password forgotten?
Register

Shopping cart Shopping cart

Info Elektor Credits: 0

Home › Magazines › 2008 › July/August › Simple Capacitive Touch Sensor

‹ previous
next ›

Simple Capacitive Touch Sensor

Published in issue 379, July/August 2008

Simple Capacitive Touch Sensor
Capacitive switches have clear advantages compared to other types of touch switches (for example 50 Hz or 60 Hz detection or resistance detection), but are often more complex to implement. Manufacturers such as Microchip have in the past designed specialist ICs for this purpose. However, it is still possible to design a reliable capacitive detector and/or switch using only a limited number of standard components.

Components

Resistors
R1,R2,R6 = 10k
R3,R5 = 100k
R4 = 47k
Capacitors
C1,C2 = 470pF
C3,C4,C5 = 100nF
Semicondcutors
D1 = 1N4148
IC1 = 4093
IC2 = LM339D
Miscellaneous
K1,K2 = 2-way pinheader
PCB, ref. 080175-1 from www.thepcbshop.com

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
Article PDF
10 Elektor Credits
PCB PDF
Free download
 

Order from Elektor 
PCB, bare
080175-1
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

Subscribe now

Subscribe now
Subscribe now
Browse online
More

Subscribe to our free
E-weekly Newsletter!

Enter your Email address:

Follow Elektor

      

Act now!

> Become an Elektor Member

> Register for E-weekly

> To Elektor-plus.com

> Become a supporting company

> To FAQs

FAQ

Before submitting questions, review our FAQ section!

Bestseller

Microprocessor Design using Verilog HDL

This book is a practical guide to processor design in the real world. It presents the Verilog HDL in an easily digestible fashion and serves as a thorough introduction about reducing a computer architecture and instruction set to practice. 

More

Package Deals

Elektor Bundles

Check our Package Deals and save money! Discounts up to 19% now available!

More

Price Slashed

Elektor OSPV

This Open Source People Vehicle is perfect for factory halls, warehouses, hospitals, colleges, schools etc.

More

Elektor PCBs at 25% OFF

© 2012 Elektor•Feedback•Media Data•Disclaimer•General conditions•Sitemap•RSS