This is a design circuit for timer relay circuit. This delay timer is a model design for the simple circuit. It is the nature of delays, all electrical devices. In this circuit has period in every 5 minutes. This is the figure of the circuit.
This circuit uses digital IC CD4093 is so simply too many. And the circuit is using relay driver transistors. It leads to a change in the situation with electricity or the electric charge of the equipment is. The calculation of the timer can calculate using this formula.
Timing =   ; 0.7 C1 x R1
Note:   ;   ; that R1 has a value of 1M with S1 switch start   ; at position “2″ .This equates to just short of 300 seconds for each position of S1. C1 and R1 through R2 may be changed for different timing periods. The output current from Pin 3 of the timer, is amplified by Q1   ; (N3904)   ; and used to drive a relay.