Time Delay Relay Circuit

  
Using a 4060 CMOS binary divider and built-in clock oscillator, a long-duration timer can be made veiy simply. The solid-state relay can be sized for your application, and can be replaced with a mechanical relay if a suitable power supply is available. With the components shown, a 4.5-Hz clock frequency is generated.
Time Delay Relay Circuit - schematic

Divided outputs are available from 4 to 16384 (about 4 hours).




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