Three-Way Touch Lamp


Posted on Aug 31, 2012

A three-way switch to control a lamp (off-dim-bright, etc.) uses an NE555 timer to generate a one-second pulse, trigge


Three-Way Touch Lamp
Click here to download the full size of the above Circuit.

red by ambient ac fields that are picked up by the human body. CI and D1 form an input network. U2 is a decode counter/divider and drives one of 10 outputs (three are used). The logic outputs drive various resistors in series with the LED in the optocoupler. The optocoupler controls a triac that is in series with a load (lamp, etc.). By reconfiguring the outputs of U2, more than three brightness levels can be obtained, up to 10. An IN914 and resistor will be required for each output.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Digital Volume Control with DS1669
10 Led Chaser
variable Hartley oscillator
Stereo balance tester
Voltage-level-indicator
Delayed Alarm Circuit
Free 8052 Microcontroller Based Projects
touch switch circuit using 555 ic
Symmetric Noise Source
Water level sensor circuit: projects for school students
AM Receivers
USB Data Acquisition
Push Off Push On
USB Joystick



Top