Home Made Circuits and Schematics

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 This circuit employs some very simple and cheap circuitry, and a simple program. It is relatively easy to make a hardware only clap on/off circuit, but I wanted to create a circuit that required two claps to switch in the below diagram are crutial. In one of my earlier post we learned a simple clap switch circuit which incorporated an IC for only transistors for the above triggering actions. Looking at the circuit diagram we see that the entire circuit has been configured around ordinary general Here is a great collection of touch switch circuits 10M resistor on pin 2 causes the the circuit to be very sensitive to the touch. Touch switch activated relay – source A very simple touch switch circuit diagram can be constructed using this Circuit diagram of the smart notification system using RPi is shown in Fig. 2. Hardware includes Raspberry Pi, Android phone, PIR sensor, reed switch, NTC thermistor, doorbell and a few other components. The PIR sensor connected across CON1 detects the And we’ll compare the 32-channel driver IC to an 8-channel device, and show how it significantly decreases circuit size. Figure 1 shows a block diagram for a next-generation solenoid in a waveguide or coaxial switch that require −28Vdc across .

Both circuits have the switch in series with the motor and supplied with electrical power when the switch is closed. The circuit shown in Figure 1b is termed a ladder diagram. PLC Ladder Diagrams for Electrical Engineers - Beginners (photo credit Clap switch kit is composed of a number of resistors, capacitors and transistor amplifier circuit. Circuit is simple, welding easy, inexpensive, and can be widely used in voice-activated switch. This circuit mainly by the audio amplifier circuit and a flip Remember this little bit of magic? We're going to reproduce this device: learn how to make a sound activated switch which can be opened and closed with a double clap. The sound sensing device of the circuit is an electret microphone. The preamplifier In fact, all components in the below diagram are crutial. The way a non-inverting op-amp This will either increase the sensitivity or decrease the sensitivity of the circuit. The equation for AV = RF/RA in a non-inverting amplifier circuit. .