Description

The EB-113 is a single board comprehensive instructional module designed to teach basic concepts of industrial semiconductors to technology students.

The module can be operated as a stand-alone unit or integrated to the EB-2000 Computer Managed Laboratory

Objectives

• Measure and sketch the optocoupler characteristics (output current as a function of input current)

• Examine the frequency response of the optocoupler

• Examine the isolating features of the optocoupler

• Troubleshoot the optocoupler

• Understand p.u.t. operation and biasing.

• Measure p.u.t. characteristics and determine p.u.t. parameters (voltage, current)

• Construct p.u.t. oscillator

• Troubleshoot p.u.t. circuits.

• Understand the internal structure of 555 timer and its basic operation principles

• Construct a stable multivibrator using a 555 timer

• Construct and trigger monostable

• Multivibrator built from 555 timer

• Troubleshoot 555 timer circuit

• Understand the internal structure of triac and its condition for operation

• Measure triac typical parameters

• Understand triac's phase control circuit principle

• Construct light dimmer with triac

• Troubleshoot triac circuits

• Identify the test points in the complete circuit

• Measure key voltages in the circuit

• Use signal tracing to isolate defective stages or blocks

• Locate faulty components within a stage

Recommended experiments

• Opto coupler

• Programmable unijunction transistor (p.u.t)

• 555 timer

• Triac

• Troubleshooting basic industrial circuits