سلام دوست عزیز
اینهم مدار تایمر برای شما.1 تا 15 دقیقه
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Most timer circuits. Often used with electrical transformers containing low as 9V and 12V, and use of electrical control relays.but the 1-15 minute timer circuit.It uses a triac instead of electrical control.This can be used with a 220V power house it is not connected to the transformer. Make smaller and easy to use.
This circuit is divided into three parts: work special high-voltage level, the scheduling and control electrical appliances.
When 220V power supply circuit R1, C1 and ZD1 a special level voltage 220V to rest 10V. The 10V input voltage is power supply to IC1 No. 555. which is part timer.Which is set by R3 and C3 at a specified time period you want.Thus, when switch S1 (Start) IC1 work out a pulse signal generator via the output pin 3 of IC1.The VR1 function timer from 1-15 minutes. Then sent into the period to pin 2 of IC2 number LM358. Which is controlled electrical appliances. The output of IC2 to expand a pin 1 with a voltage of about 5V. to stimulate the pin to the gate (G) of a Triac T1. which a triac acts as a switch on and off electrical appliances.When pressure on the to stimulate pin G a Triac will conduct between MT1 and MT2 pins result appliances are working fluorescent light. And after the set time-out quits and IC2 to stop the flow with the Triac. Which IC2 stopped work, simply hit the switch S2 to reset or unplug any.
