Electronics System 1
A comprehensive system introducing the principles of electronics
The Electronics System 1 is designed to be rugged and easy to use. Assemble and teach electronic circuit and principles with minimum of fuss using our easy to use electronic blocks.
Each block contains a fully functional electronic component encased; everything from a potentiometer to a photo resistor.
Using this kit you can observe and understand how semiconductor components work and their characteristic behaviour in static and dynamic circuits.
The system includes a durable ABS plastic carry case with foam inserts.
Laws and principles investigated
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List of the experiments detailed in the instructio
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Transistors as current amplifiers
A low-power input signal allows you to control a high-power output signal.
A bipolar transistor works as a current regulator. In a NPN transistor the main current goes from the collector to the emitter, while the small current goes from base to emitter.
For example, this experiment highlights the effect of the current amplification using an LED diode. A light-emitting diode (LED) is a diode that glows when a current flows into it in a forward direction.
In our circuit a resistance R=100W has been inserted in order to limit the current flowing through the LED. Once the NPN transistor has been properly connected, a current will flow through the LED will glow red.
This means that the small current injected through the base of the transistor has been amplified into a higher current through the collector and the LED
The Astable Multivibrator
Building a flip-flop circuit
An astable multivibrator is a two-stage switching circuit where the output of the first stage is connected to the input of the second stage and vice versa. The outputs of both stages are complementary.
This multivibrator generates square waves without any external triggering pulse. The circuit has two stable states and switches back and forth from one state to another, remaining in each state for a time depending upon the discharging of the capacitive circuit.
The multivibrator is an example of relaxation oscillator, whose frequency may be controlled by external synchronizing pulses.
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