SUNSTEP Training is Technology in Electronics for schools. We provide electrical and electronic kits that is a practical application of theory. Schools visit Sunstep for a workshop in electronics and a presentation at the High Voltage Laboratory of the University of Stellenbosch.



Electronic systems and control:

Switches: Manual switches controlled by the user, e.g. push, SPST, SPDT, DPDT.

Diodes and LED (Light Emitting Diode): A diode is a component that allows current to flow in one direction only. A LED allows current to flow in one direction only and also gives off light and is often used as an indicator that a circuit is "ON"

Transistors: only npn-type will be used at this level. A transistor is a device that can act as a switch and it can amplify a small current (e.g. from a sensor) into a larger current. Connect a simple transistor circuit.

Sensors - important input devices

LDR (Light Dependant Resistor) - a component whose resistance decreases with light (dark - high resistance; bright light - low resistance).

Thermistor: a component whose resistance varies with temperature. Two types exist:

- +t: resistance increases with increasing temperature.

- -t: resistance decreases with increasing temperature.

Touch or moisture detector: a component that can be bridged using a 'wet' finger, thus completing the circuit, indicating the touch.

Capacitors: a component which can store and then release electrical energy.

Link to the University of Stellenbosch