IC 4060 | Electronic Project Circuits

Posts Tagged ‘IC 4060’

Tan Timer by IC 4060 and IC 4017

Six timing positions suited to different skin types
Timing affected by sunlight intensity
Six timing positions suited to different skin types Timing affected by sunlight intensity. This timer was designed for people wanting to get tanned but at the same time wishing to avoid an excessive exposure to sunlight. A Rotary Switch sets the timer according to six classified Photo-types (see table). A Photo resistor extends the preset time value according to sunlight brightness (see table). When preset time ends, the beeper emits an intermittent signal and, to stop it, a complete switch-off of the circuit via SW2 is necessary.

Read more original source:http://www.redcircuits.com/Page34.htm

Be the first to comment - What do you think? Posted by admin - October 26, 2008 at 2:37 am

Categories: Audio diagram, Lighting, Timer Tags: Clock timer, IC 4060, Light timer, timer alarm

Precision Metronome – Pitch generator

CMos IC1 and IC2B quad AND gate form a 2.4576 MHz crystal oscillator plus a 2400 times divider. IC3A provides further division by 16, delivering a 64 Hz stable frequency square wave. This frequency is multiplied (by means of Phase Locked Loop IC5, double decade divider IC4 and IC3B 4 bit binary divider) by the number set by three miniature BCD thumbwheel switches SW1, SW2 and SW3: units, tens and hundreds respectively.
Connecting, by means of SW5, Q1 base to pin 2 of IC6, we obtain (after a 64 times division) the same frequency set by thumbwheel switches with quartz precision, and no need for a scale indicator.

Volume regulation of the pitch generator is obtained trimming resistor R5. In the same way, with SW5 set to metronome, the small speaker reproduces the frequency set by thumbwheel switches but divided by 3840, thus obtaining beats per minute ratio.
Read more source:http://www.redcircuits.com/Page3.htm

Be the first to comment - What do you think? Posted by admin - May 24, 2008 at 6:32 am

Categories: Audio diagram Tags: IC 4060, tone audio

Automatic Lamp Control with Light Sensitive Switch

The circuit above is an automatic switch which functions in absence of light. The IC 4060 works as an oscillator and the generated signal is applied to the base of T4 transistor. Phototransistor T3 is in conduction by existance of light and it keeps the T5 transistor’s base at ground potential.
When no light reachs the phototransistor, it gets in insulation. T3 reachs positive potential through 22kohm. T4 and T5 both gets in conductance. The oscillator signal reachs the optic coupler and lamp(s) shines.