2 Best Long Duration Timer Circuits Explained | Homemade IntroductionCircuit DescriptionUsing only BJTsAchieving High Accuracy DelaysPlease remember that you can never produce long accurate delays using only a single 4060 IC or any CMOS IC. I have confirmed practically that beyond 4 hours IC 4060 begins deviating from its accuracy range 555 as a delay timer is even worse, it's almost impossible to get accurate delays even for an hour from this IC inaccuracy is mostly due to capacitor leakage current, and inefficient discharging of the capacitor bewarSee more on homemade-circuits Two Simple 24-Hour Timer Circuit Schematics Applying power starts the timer. And it can be reset at any time by a brief interruption of the power supply. The Support Material for this circuit includes a step-by-step guide to the construction of the circuit-board - a parts list - a detailed circuit description - and more. Veroboard Layout No.2 How to build 24 hours timer circuit with IC 4060 24 hours Timer circuit diagram schemactic design simulation using integrated circuit IC 4060 with PCB design layout activate timer relay, transistor , diode. The 24 hour timer using the 4060 mentions removing D2 to stop oscillations, but shouldn’t that be D1, CD4060 Timer Circuit - YouTube This is a 10 seconds up 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.