Experimental Training Equipments-> Multivibrators & Timer Circuits

[1]   Click to Enlarge MULTIVIBRATORS USING TRANSISTORS The purpose of this experiment is to investigate the operation and characteristics of the astable multivibrator, the mono-stable multivibrator and bistable multivibrator, using transistors. Astable multivibrator is free running rectangular wave generator. It has two outputs, which are 180 degrees out of phase. Monostable is a one-shot multivibrator and R is triggered by sharp pulse, obtained by differentiating a square-wave. It produces one output pulse for each input pulse. A bistable is a flip-flop and it is stable either in '1' or '0' state, till it is triggered into their other state. Output changes for every two Input triggers. It can also be used as divide-by-two counter. Built in regulated power supply:+5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge MULTIVIBRATORS USING OPERATIONAL AMPLIFIERS Objectives of this experiment: The purpose of this experiment is to design and demonstrate the operation of stable (free running), monostable (one-shot) and bistable (two stages) multivibrators, using op-amp. Built in regulated power supply: +15V/300mA; -15V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge MULTIVIBRATORS USING DIGITAL INTEGRATED CIRCUITS Objective of this experiment: The purpose of this experiment is to design and demonstrate the operation of an astable, monostable and bistable multivibrator, using digital ICS. Built in regulated power supply: + 5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge MULTIVIBRATORS USING IC-555 TIMER Objectives of this experiment: The purpose of this experiment is to demonstrate the operation of an astable, monostable and bistable multivibrator, using timer-IC-"555". Built in regulated power supply: +5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge SCHMITT TRIGGER (TRANSISTOR & IC-BASED) Objectives of this experiment: 1. To construct an emitter-coupled Schmitt trigger using transistors. 2. To observe that this produces a rectangular wave output from a sine wave input. To construct Schmitt trigger using op-amp. 3. To observe that any increase in amplitude of input sine wave has an effect on the width of the output waveform. 4. To verify these facts, using an IC-7413. Built in regulated power supply + 15V/300mA, -15V/300mA. Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge TIMER CIRCUIT EXCITING A TIME-DELAY RELAY Objectives of this experiment: 1. To construct a timer circuit (IC-555) which can excite a time delay relay after a specific time interval after the application of power to the timer circuit. 2. To repeat the same experiment such that the relay contacts close during the time delay period. Built in regulated power supply: + 5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge CONSTRUCTION OF TRANSISTOR TIMER Objectives of this experiment: 1. To construct timer using transistor. 2. The frequency depends on capacitor or resistor. Built in regulated power supply + 15V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge TWILIGHT -RELAY USING 555 & LDR Objectives of this experiment: To construct light operated relay using 555. The ambient light around the cds cell decreases and timer activates the relay. Built in regulated power supply: +12V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge COUNTER USING 555 & LDR Objectives of this experiment: To construct counter using 555 and LDR circuit. Depending upon the intensity of the resistance value of LDR varies & that will vary the frequency of 555 output. Built in regulated power supply: + 5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge BURGLAR ALARM USING 555 & LDR Objectives of this experiment: To construct Burglar alarm using 555 & photocell. Built in regulated power supply: +5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge TEMPERATURE CONTROL CIRCUIT USING 555 &THERMISTOR Objectives of this experiment: To construct temperature controller circuit using 555 with a thermistor resistor divider. The timer turns ON the heating element. Built in regulated power supply: +9V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge AUDIBLE LOGIC PROBE USING 555 Objectives of this experiment: To construct an audible logic probe using 555 Built in regulated power supply: +5V/500mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge VISUAL LOGIC PROBE USING 555 Objectives of this experiment: To construct Visual Logic probe using 555 Built in regulated power supply: +5V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge Click to Enlarge CONTINUITY TESTER USING 555 Objectives of this experiment: To construct continuity tester using IC 555 and you can test any PCB or any circuit by hearing the output on 8W speaker or buzzer. Built in regulated power supply: +9V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms See Enlarge [1] Go to Top