CD4060 Timer Circuit 1 minute to 2 hours
This is a 1 minute to two-hour timer switch. The 14-stage binary ripple counter Type 4060, IC1, has an on-chip oscillator capable of stable operation over a relatively wide frequency range. In the present circuit, the oscillator frequency is determined by an external RC network connected to pins 9, 10 and 11.
| PARTS LIST | |
| R1 | 2.2MΩ |
| R2 | 18KΩ |
| R3 | 1KΩ |
| R4 | 1KΩ |
| R5 | 1KΩ |
| R6 | 1MΩ |
| VR1 | 500KΩ (504) |
| C1 | 220nF (224) |
| C2 | 10nF (103) |
| D1 | LED |
| D2 | LED |
| D3 | 1N4001 |
| Q1 | BC547 |
| IC1 | CD4060 |
| RL1 | Relay |
When the power is on, the pulse at junction R6-C2 resets the counter and counting starts. When the counter reaches bit 14 (Q13), pin 3 goes high so that the relay, a 9V type, is turned on via driver Q1.
CD4060 Pinout
The time delay is set with the aid of VR1. Time delays of between one minute and two hours are possible by appropriate dimensioning of the timing components:
1-30 minutes: C1 = 220nF ; VR1 = 500KΩ.
1-60 minutes: C1 = 470nF ; VR1 = 500KΩ.
1-120 minutes: C1 = 470nF ; VR1 = 1MΩ.
The timer is powered by a 9V PP3 battery. Light-emitting diode D1 does not affect the operation of the circuit and is included merely to show that the timer works. Diode D1 and resistor R4 are , therefore, optional components.
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Please send your ideas, which are very important for our success…
#1 by palitha on January 9th, 2012
thanks dear
i want cct a 3 sec “on” & 4 min “off”.it will work 24 hrs,can u send me a one it will big help to me,thank’s bro,
palitha,,,,,,,,,,,,,!
#2 by Ajay Kumar on November 21st, 2011
Hi,
I want a timer which can work for 10 hour. please suggest
#3 by Podgee on September 14th, 2011
To Jeevan, try using 16v capacitors or higher
#4 by Lokanadhan on August 26th, 2011
In this circuit one led continously blinking and other LED blinks for some times ,but the supply given to the device will not cut off,whats the problem
#5 by Dazy on July 1st, 2011
Nice circuit! I’m looking forward to make one timer like this, Thanks!
#6 by mk on June 5th, 2011
plz dont forget me Ineed more
thank for Electronic Circuits
#7 by bryan on May 21st, 2011
Hello, Could you advise a suitable alternative to the BC547 transistor, which seems to be temporarily unavailable in the UK. I do have some BC548B transistors, will they work OK. Thanks.
#8 by jeevan on May 18th, 2011
i am a very fresh guy for electronics. i tried to get the parts to try this circuit but the shopkeeper is asking the voltage for 220nF (224) & 220nF (224) capacitors. and also what is given in brackets for nf capacitors and VR1500KΩ (504)
thank you brother for your circuit.
#9 by Sherif Bekhit on April 19th, 2011
very well
thanks 4 all