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Using this circuit, you can trade the velocity of the fan from your sofa or mattress. Infrared obtainr module TSOP1738 is used to obtain the infrared sign transmitted by using remote keep a watch on. The circuit is powered with the aid of regulated 9V. The AC primarys is stepped down by using transformer X1 to deliver a secondary output of 12V-0-12V. The transformer output is rectified by using full-wave rectifier comprising diodes D1 and D2, filtered via capacitor C9 and regulated through 7809 regulator to provide 9V regulated output. Any button on the remote can be used for keep watch overling the pace of the fan. Pulses from the IR receiver module are utilized as a set off sign to timer NE555 (IC1) by the use of LED1 and resistor R4.

Remote-Controlled Fan Regulator Circuit Diagram

IC1 is wired as a monostable multivibrator to prolong the clock given to decade counter-cum-driver IC CD4017 (IC2).Out of the ten outputs of decade counter IC2 (Q0 thru Q9), handiest 5 (Q0 through Q4) are used to control the fan. Q5 output shouldn't be used, while Q6 output is used to reset the counter. Another NE555 timer (IC3) can additionally be wired as a monostable multivibrator. Combination of one of the most resistors R5 via R9 and capacitor C5 controls the pulse width.  The output from IC CD4017 (IC2) is applied to resistors R5 via R9. If Q0 is excessive capacitor C5 is charged via resistor R5, if Q1 is high capacitor C5 is charged through resistor R6, and so on.

Optocoupler MCT2E (IC5) is wired as a zero-crossing detector that supplies trigger pulses to monostable multivibrator IC3 all over zero crossing. Opto-isolator MOC3021 (IC4) drives triac BT136. Resistor R13 (47-ohm) and capacitor C7 (0.01µF) mixture is used as snubber network for triac1 (BT136). As the width of the heart beat lowers, firing attitude of the triac increases and velocity of the fan also increases. Thus the rate of the fan increases when we press any button on the faraway control. Assemble the circuit on a general-purpose PCB and house it in a small case such that the infrared sensor can easily receive the signal from the far flung transmitter.

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