Instrument is design to demonstrate the method to transmit signals via. Electromagnetic transmission. It is still used in radio system to transmit audio signal although it has lesser in popularity compared to FM (Frequency Modulation) due to its lower signal to noise ratio.
Technical Specification :-
1. I C based DC regulated Power Supply ±12 V / 500 mA.
2. Audio frequency 1 KHz / 0-2 Vpp for modulating signal 455 KHz / 2.5 Vpp approx. for Carrier Frequency.
Each module is housed in a plastic box 90 x 90 x 30 mm and is provided with a circuit diagram on the panel. It has necessary input and output sockets. The socket stacking system allows addition of as many modules as desired, designed to work on 6V D. C.
Bridge rectifier is designed with four LED’s internally arranged in bridge pattern fitted inside a plastic moulded case. Two LED’s are red and two LED’s are green. This device is used to demonstrate the functioning of a bridge rectifier, i.e., to convert alternating current (AC) into direct current (DC). Two yellow sockets are used for AC input. Two sockets, one red and one black, are used for DC output. For the easy understanding of the internal circuitry, the circuit diagram is printed on the box.
This Trainer Consist of :
1. Regulated power supply of ± 12 V / 250 mA.
2. Variable 0 to ±5 V / 250 mA.
3. Sine wave oscillation of 1 KHz.
4. Digital Voltmeter of 0-20 V DC, LCD display, 3 ½ Digit.
5. Functional diagram of IC 741 is printed with 2 mm sockets.
6. One extra 8 pin IC Base with 2 mm sockets.
7. Potentiometer of 10K Ohms.
8. Required Resistance and Capacitances mounted on board.
9. Interconnection Leads and Manual to perform 15 experiments on IC741 e.g. inverting, non-inverting, summing, difference, multiplier, differentiator, integrator etc.
Bridge Rectifier is made of four diodes connected in a bridge circuit. It is housed in a plastic moulded box. This bridge rectifier converts alternating current (AC) into direct current (DC). It provides the same output polarity for either input polarity. All the electronic devices require direct current, so bridge rectifiers are used inside the power supplies of almost all electronic equipment. For the easy understanding of the internal circuitry, the circuit diagram is printed on the box.
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