The training laboratory system is designed to study the operation principle of semiconductive optical generators, to check current-voltage characteristics of LEDs, radiate different waves length.On the basis of the data obtained, voltage is determinated, at which the pn-transition begins to emit light quanta and the value of Planck’s constant is estimated.
Structurally, the training system is a desktop unit. The system consists of the case with following equipment, installed inside:
- stabilized current source;
- digital control and measurement circuit of investigated parameters.
The front panel of training system includes:
- a set of LEDs, radiate different waves length;
- digital indicators;
- switch sockets;
- potentiometers for voltage regulation.
The back panel on training system includes:
- power switch;
- USB socket;
The training system is supplied with methodical and technical documentation for teaching staff.