Power Electronics Lab
Showing 1–16 of 37 results
3 Phase Half/Full Controlled Bridge Converter/Rectifier
3 Phase Half/Full Controlled Bridge Converter/Rectifie Features: The board consists of following built-in parts: UJT relaxation oscillator and triggering pulse generator with resistance ramp control Three numbers of pulse transformers each 1:1:1 type Mains transformer having outputs 0-12V at 100 mA, 0-12V at 100 mA & 0-32V at 500 mA Two SCRs connected in pulse … Continue reading “3 Phase Half/Full Controlled Bridge Converter/Rectifier”
AC Chopper
AC Chopper The low voltage ac voltage ( S1 of T ) is applied to the pair of two SCRs, CR1 and CR2, connected antiparallel with in series RL. These are the main SCRs. As the SCR is being commutated at the crossover points of ac cycle, but then it becomes a simple phase control … Continue reading “AC Chopper”
AC Motor Speed Control By Varying frequency
AC Motor Speed Control By Varying frequency Motor-driven centrifugal pumps, fans and blowers offer the most dramatic energy-saving opportunities. Many of these operate for extended periods at reduced load with flow restricted or throttled. In these centrifugal machines, energy consumption is proportional to the cube of the flow rate. Even small reductions in speed and … Continue reading “AC Motor Speed Control By Varying frequency”
Buck Boost Converter
Buck Boost Converter Features: Reliable Precise design Lightweight Durable
Crystal Oscillator
Crystal Oscillator Features : Instrument comprises of fixed output DC Regulated Power Supply of 12V, circuit diagram is printed, components placed inside the cabinet & important connections are brought out on sockets.
Current Commutated Chopper
Current Commutated Chopper Features: Easy to operate Compact design Longer serving life Technical Specifications: Principle: Conversion of a Fixed DC to Variable DC Voltage. Type of Chopper: Current Commutated Chopper. D. C. Source: 24V DC (Unregulated). Trigger Circuit: UJT Trigger Circuit with variable trigger frequency to trigger the SCR. Commutation: Class “B” Type. Output Voltage: 5V … Continue reading “Current Commutated Chopper”
DC Motor Speed Controller
DC Motor Speed Controller Feature : The unit has following features. 1. Motor unit, which comprises a small permanent magnet dc motor, rated voltage 12 V dc, rated current 0.25 A at normal run and 0.4 A at full load, the torque 75 gm / cm and maximum speed in excess of 3200 rpm ( … Continue reading “DC Motor Speed Controller”
DC To DC Converter (Up Or Down)
DC To DC Converter (Up Or Down) Features : 1. All parameters NOT specially mentioned are measured at normal input, rated load and 25 of ambient temperature. 2. Ripple & noise are measured at 20 MHz of bandwidth by using a 12″ twisted pair-wire terminated with a 0.1 uf & 47 uf parallel capacitor. 3. … Continue reading “DC To DC Converter (Up Or Down)”
DV/DT Limitation Of SCR
DV/DT Limitation Of SCR Objects: Test dv/dt estimation of the SCR Compare Dv/Dt capability by gate-cathode terminations Compare Dv/Dt capability by gate-cathode biasing (voltage biasing) Compare Dv/Dt capability by gate-cathode biasing (current biasing) To improve Dv/Dt capability by transistor snubber circuit Effect of R.C. snubber circuit on Dv/Dt capability Study of different scheme of R.C. … Continue reading “DV/DT Limitation Of SCR”
Four Quadrant Chopper
Four Quadrant Chopper Salient Features: Aluminium profile modular flat demo panel rack system carrying various high voltage components housed in panels to minimize shock possibility Facilitates easy and safe wiring by students using shrouded banana patch cords and shrouded socket arrangement to try out different topologies for high voltage circuits Each panel has moulded enclosure, … Continue reading “Four Quadrant Chopper”
IGBT Characteristics Apparatus
Features : Instrument comprises of Two DC Regulated Power Supplies, three round meters for voltage & current measurement, one IGBT is mounted behind the panel, connections of Supplies, Meters & IGBT brought out at 4mm Sockets.
IGBT Chopper (Motor Speed Controller)
IGBT Chopper (Motor Speed Controller) IGBT chopper driver circuit consists of a PWM waveform generator, and a hybrid driver circuit, with de-saturation detection. The pulse-input circuit is optically isolated from the driver circuit, The output circuit from this driver protects the IGBT module from dangerous transient voltages. The de-saturation trip time can be adjusted by … Continue reading “IGBT Chopper (Motor Speed Controller)”
Mcmurray Full (Or Half)Bridge Inverter
Mcmurray Full (Or Half)Bridge Inverter The kit is designed to studyMacmurray half/full bridge inverter characteristics. The kit consists 8 SCRs, two inductor, two commutation capacitor, four diodes, firing circuit and load in form of wire wound resistor. The power source is inbuilt & operates at 220 Vac line.
Mosfet Chopper (Motor Speed Controller)
Mosfet Chopper (Motor Speed Controller) This trainer helps to study of Mosfet Chopper Circuit. The inbuilt power supply vanishes the hurdels of connecting separate power supply. The circuit diagrams of Chopper Circuit is printed on the board, for better understand the working of Chopper Circuit. SPECIFICATION : Inbuilt Power Supply Mosfet Chopper Provided Lamp Load onboard … Continue reading “Mosfet Chopper (Motor Speed Controller)”
Mosfet/IGBT Bridge Inverter
Mosfet/IGBT Bridge Inverter This kit is designed to study of low capacity Mosfet based inverter system. It has inbuilt drive signal source, switching device, fixed resistive load in form of three lamps and dc supply for the set up. The circuitry is represented in two subsystem.The working principal of Mosfet inverter is quite simple.
SCR Bridge Inverter
SCR Bridge Inverter The kit is designed to study low capacity SCR bridge inverter input – output characteristics. The kit consists 4 SCRs, two inductor, four commutation capacitor, one dc ammeter, firing circuit and provision for connection of resistive load in form of wire wound resistors. The power source is inbuilt with the kit fully … Continue reading “SCR Bridge Inverter”