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Here is the circuit of clap-operated remote control fans is used to control not only switching properties but also control speed of fan. The main advantage of clap operated remote control for fan is, it can control up to ten-step speeds of fan where normally a fan has three to five step speeds.   Circuit description clap operated remote control for fan This entire circuit clap operated remote control for fan is divided into four major section i.e. sound-operated trigger pulse generator, clock pulse generator, clock pulse counter and load operator. Sound-operated trigger pulse : – The heart of this section is transistor T 1 BC148, configured as class-C amplifier mode. The MIC 1 is used to change voice signal into its corresponding electrical signal and is given to base of transistor T 1 in order to amplify and increase its intensity. Clock pulse generator :- This section is build around timer IC NE555 and configured as monostable multivibrator. The trigger pulse generated by tran...

Description   This circuit was intended to activate a relay by means of a hand clap. Further claps will turn-off the relay. An interesting and unusual feature of this project is the 3V battery operation. The circuit's sensitivity was deliberately reduced, in order to avoid unpredictable operation. Therefore, a loud hand clap will be required to allow unfailing on-off switching. Q1 acts as an audio amplifier. IC1 timer, wired as a monostable, provides a clean output signal and a reasonable time delay in order to allow proper switching of the following bistable circuit. A discrete-components circuit formed by Q2, Q3 and related parts was used for this purpose, in order to drive the Relay directly and to allow 3V supply operation. Circuit Diagram:  Parts:  R1 = 12K R2 = 1M R3 = 6.8K R4 = 220K R5 = 2.2M R7 = 100K R8 = 22K R9 = 6.8K R10 = 100K Q1 = BC550C Q2 = BC328 Q3 = BC328 C1 = 220nF-63V C2 = 22nF-63V C3 = 220nF-63V C4 = 22nF-63V C5 = 22nF-63V C6 = 47uF-25V D1 = 1N414...

This is a Simple Sixteen Way Clap-Operated Switch Circuit Diagram . Control your home appliances without getting out of your bed. You just have to clap in the vicinity of the microphone used in this circuit, which you can keep by the bedside. You can switch on/off up to four different electrical equipment (TV, fan, light, etc) in 16 different ways.This circuit is built around timer IC 555 (IC1), CMOS IC 74LS93 (IC2) and five BC547 npn transistors (T1, T2, T3, T4 and T5). Transistor T1 is used as the preamplifier and the rest are used for driving the relays. Sixteen Way Clap-Operated Switch Circuit Diagram   A small condenser microphone is connected at the base of transistor T1, which is biased from resistor R1 (10 kilo-ohms). The clapping sound is converted into electrical energy by the microphone and amplified by transistor T1. The transistor output is fed to the monostable circuit wired around IC 555. Output pin 3 of the timer is connected to the clock input of divide-by-16 ...