Electronic linear discrete components

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BJT voltage amplifiers

The board allows a first approach to the theoretical‐ practical study of the static and dynamic operation  of   the BJT (Base‐emitter Junction Transistor), used as a voltage amplifier.
The board affords the problems associated to the use of the transistors in the three basic configurations: CE (Common Emitter), CC (Common Collector) and CB (Common Base).
Firstly, the  bias and the working point stabilization   problems are considered.
Then, the typical features of the three configurations are analyzed: input resistance, output resistance, voltage gain and current gain.
In the second section of the board typical applications are studied, such as the bootstrap effect bias and the Darlington connection.
The board is supplied complete with a set of stackable, plug‐in cables of suitable lengths and colours and with a training manual.
Power supply: ± 15 Vdc, 250 mA
Experiments
· Bias and dc load line in CE, CC and CB configurations
· Measurement of typical parameters in the three configurations
· Dual load amplifier with phase inverter function
· Emitter follower and bootstrap effect bias
· Analysis and checking of Darlington connection

DL 2155AT

BJT power amplifiers

The board represents an extremely useful tool for studying the power amplifier of A class and B class.
In  fact,  it  provides  4  amplification  architectures   among  the  most common in preamplifiers  (A  class)   and  final amplifiers  (B  class), with the possibility of analyzing the power stage and/or the drivers.
The board is supplied complete with a set of stackable, plug‐in cables of suitable lengths and colours and with a training manual.
Power supply: ± 15 Vdc, 1 A
Experiments
· Checking the conversion efficiency and the figure of merit in a A‐class amplifier with dc current flowing through the load
· Determination of the typical parameters of a A‐class amplifier with an output transformer
· Checking the characteristics of a complementary symmetry push‐pull amplifier
·Checking the characteristics of the single‐ended amplifier

DL 2155APT

BJT Feedback amplifiers

The board is designed to afford the problems connected to the introduction of negative feedback into an amplifier, and to its influence on the different parameters: amplification, bandwidth, input and output resistances, noise.
The different feedback configurations are theoretically analyzed and experimentally checked: series voltage, parallel voltage, series current, parallel current. Single stage and multistage amplifiers are used, the latter in direct coupling.
The board is supplied complete with a set of stackable, plug‐in cables of suitable lengths and colours and with a training manual.
Power supply: + 15 Vdc, 750 mA
ExperimentsExperiments
· Analysis and study of an amplifier with series or parallel voltage feedback and with series or parallel current feedback
· Analysis and study of multistage amplifiers with direct coupling
· Influence of feedback in the amplifier: study of the amplifier with connected/unconnected feedback
· Analysis and study of an amplifier with series or parallel voltage feedback and with series or parallel current feedback
· Analysis and study of multistage amplifiers with direct coupling
· Influence of feedback in the amplifier: study of the amplifier with connected/unconnected feedback

DL 2155ART

FET‐MOSFET

The board provides a full support concerning the elementary amplification configurations. It affords the problems related to the use of FET and MOSFET in the three basic configurations: common source, gate and drain. Firstly, the bias and working point stabilization problems are considered. Then, the typical features of the configurations are analyzed: voltage gain, input and output resistances.
The board is supplied complete with a set of stackable, plug‐in cables of suitable lengths and colours and with a training manual.
Power supply: + 15 Vdc, 750 mA
Experiments
· FET and MOSFET bias in the different configurations
· Measurement of typical configuration parameters
· Bootstrap effect in common drain configuration

DL 2155FET

DC Power Supply

The module gives the direct power supplies that are necessary for the operation of the experiment boards.
Output voltages
• ± 15 Vdc, 1 A
• ±   5 Vdc, 1 A
protection against short circuits
Supply voltage: single‐phase from mains

DL 2555ALG

AC Power Supply

The module gives the alternating power supplies that are necessary for the operation of the experiment boards.
Output voltages
• 12 Vac, 2 A
• 24 Vac, 2 A
Supply voltage: single‐phase from mains.

DL 2555ALS

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ProductsCodeSheetTender specsManualsVideo
BJT VOLTAGE AMPLIFIERS DL 2155AT
BJT POWER AMPLIFIERSDL 2155APT
BJT FEED-BACK AMPLIFIERSDL 2155ART
FET-MOSFETDL 2155FET
TRANSISTOR BASED VOLTAGE REGULATORSDL 2155RTD