Electric Bell

Description

Designed to demonstrate to implement and applications of electrical, electronic devices and simple circuits. These modules are fitted with 4 mm sockets. Components are directly mounted on printed PCB with diagram.Various modules are available as following Resistor LDR LED Push Switch Motor Reed Relay Reed Switch Relay Nand Gate Buzzer Thermistor Lamp Holder Single Pole Double Throw Switch Electromagnet Power Transistor

Description

Mounted on panel, large size parts and visible wiring. Operates on 4 – 6 V DC

Description

This apparatus is an effective demonstration of how the earth wire and fuse act together to protect both the user and the appliance. When the appliance is connected correctly and the LEDs in the appliance will illuminate to show the appliance is working. A fault is then demonstrated by swapping the live wire from inside the appliance to the case to show either the fuse melts (protecting the user and appliance) or in the case of no earth wire, the LEDs illuminate to indicate the passage of current through the person to ground. The fuse is easily visible and can be seen to ‘blow’ when a fault occurs.The unit is supplied with 10 m of fuse wire and full instructions. A 12 V DC power supply is required. Connections are made via 4 mm shrouded sockets.

Description

To demonstrate the characteristics of simple and primary cells. Consists of a plastic jar with a screw-on plastic rim containing two adjustable brass electrode holders, eight electrodes of different metals and a porous ceramic cup. With Instructions.