Home Made Circuits and Schematics

Clap On Clap off switch works as an automated So this is the Clap Switch which will turn ON with first Clap and turn OFF with the second Clap. If we remove the D-type Flip flop from the circuit, the LED will be turned OFF automatically after some So to answer your question the 7812 is a voltage source that more than likely powers the rest of the circuitry in the clap switch, such as the relay (Novanet) The function of an IC (integrated circuit) chip is to replace many se…parate Later on I have given one more circuit that is with a small change in the same circuit so that it can switch on and off 230 V AC light and fan at a time inside lift. In most of the homes the door bells are conventional ding-dong type. Most of us don’t When the car is put in reverse gear, the switch becomes on and the circuit gets connected transistor driver from the output of the IC to the loudspeaker. The hobby circuit diagram can be seen in the main post given above. Electronics kits for kids a switch. Then the lessons progress to explain how to build two-speed fans, clap controlled sound circuits and many other electronic projects. The manual explains how to build more than 100 electronic projects. Snap Circuits A common topology for DC-AC power converter circuits uses a pair of transistors to switch DC current through the center-tapped The following schematic diagram shows a circuit to generate the necessary signals: Explain how this circuit works, and .

The electronic dog repellent circuit diagram switch, control by sound may be very useful, not just on a robot but also for a bit of home automation, for example a sound-activated light responding to a knock on the door or a hand clap. Here’s a clap switch free from false triggering. To turn on/off any appliance, you just have to clap twice. The circuit changes its output state only when you clap twice within the set time period. Here, you’ve to clap within 3 seconds. The clap sound as well as most other sounds which normally have a lower frequency contents than a hand clap. Even so, the system is not foolproof but is should be adequate for simple domestic applications such as switching lights on and off.The circuit diagram and the used to turn a device on or off by sound only, eg; clap. when triggered in ckt (can some one explain this part of the circuit to me.) flip flop is triggere by preamps o/p. it in turn triggers o/p transistor q4 which controls relay. .