Power Electronics Lab
Showing 17–32 of 38 results
SCR Commutation Circuits(A-E)
SCR Commutation Circuits(A-E) Product Features Built in AC & DC Power Supply On board firing circuit On board pulse transformer for isolation Test point to observe signals
SCR Lamp Flacher
SCR Lamp Flasher Power Electronic Training Board has been designed specifically to study the use of SCR and TRIAC in D.C. and A.C. lamp flasher respectively. The flasher is useful for students of understand the application of SCRs in D.C. flasher, triggered by UJT relaxation oscillator. The repetition rate of the flasher can be varied … Continue reading “SCR Lamp Flacher”
SCR Morgan Chopper
SCR Morgan 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: Morgan’s 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 “SCR Morgan Chopper”
SCR Phase Control
SCR Phase Control Features: An isolation transformer 230 VA.C. 250 mA. This protects external instruments from damage if they are not isolated Bridge rectifier for full-wave phase control with zener regulator Two potentiometers for resistance controlled ramps Two potentiometers for resistance controlled pedestals Uni-junction transistor 2N 2646 Pulse transformer 1:1:1 Three SCRs for half-wave and … Continue reading “SCR Phase Control”
SCR R & R-C Triggering Circuits
SCR R & R-C Triggering Circuits FEATURES Consists of three types of basic firing circuit to trigger SCR Separate sections for R – firing, RC – firing, UJT firing circuit One potentiometer used to vary the firing angle of UJT firing circuit Another potentiometer used to vary the firing angle of R, RC- firing circuit … Continue reading “SCR R & R-C Triggering Circuits”
SCR Ring Counter
SCR Ring Counter Stage SCR Ring Counter which can be extended to any number of stages by adding identical circuitry, if required. This board demonstrates high power load switching in a sequential order. This set-up can also be used as sequential flash over. The time delay between each sequence is adjustable. This training board facilitates students … Continue reading “SCR Ring Counter”
SCR Single Phase Half/Full Controlled Bridge Converter
SCR Single Phase Half/Full Controlled Bridge Conveter 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 … Continue reading “SCR Single Phase Half/Full Controlled Bridge Converter”
SCR Single Phase Half/Full Controlled Bridge Rectifier (Advance Model)
SCR Single Phase Half/Full TECHNICAL SPECIFICATIONS: Power Supplies: Power Supply +15Vat 150mA Isolated Supply 0-12V AT 500mA. Operated on Mains power 230V, 50Hz +10% Components are mounted on the panels are: AC Phase Control by Gate Control Firing Circuit. Inductive Load (Using Motor With Fan 12V DC) Resistive Load (Variable Resistor 5W Using Rotary Switch … Continue reading “SCR Single Phase Half/Full Controlled Bridge Rectifier (Advance Model)”
SCR Single Phase Half/Full Controlled Bridge Rectifier (Basic Model)
SCR Single Phase Half/Full Cont TECHNICAL SPECIFICATIONS: Analog Meters: Voltmeter: 20V DC, 30V DC Ammeter: 250mA DC Power Supplies: Isolated Supply 0-15V AT 250mA. Operated on Mains power 230V, 50Hz +10% Components are mounted on the panels are: AC Phase Control by RC Firing Circuit. Inductive Load (Using Motor With Fan 12V DC) Resistive Load (Variable … Continue reading “SCR Single Phase Half/Full Controlled Bridge Rectifier (Basic Model)”
SCR Triggering Circuits
SCR Triggering Circuits Product Features Built in power supply. Easy to operate and understand. Three firing circuits on single board. Gradual firing angle control. Test points for observe output of different circuits. Sockets to make different connections. On board AC sources of 0 V-18 V.
Single Phase Bridge Cycloconverter
Single Phase Bridge Cycloconverter A cycloconverter oftenly called as ‘cycle converter’ changes the frequency of a single (or three phase) alternating power source without the necessity of an intermediate ac to dc conversion stage. A cycloconverter require multiple control device of a single or three phase excitation, and are limited to low output frequency only. The … Continue reading “Single Phase Bridge Cycloconverter”
Single Phase Dual Converter (Cont- Discount Mode)
Single Phase Dual Converter (Cont- Discount Mode) TECHNICAL SPECIFICATIONS: Power Supplies: Power Supply +15Vat 150mA Isolated Supply 0-220V/110V/24V AT 1A. Operated on Mains power 230V, 50Hz +10% Digital Meters: Voltmeter 2000V AC Voltmeter 2000V DC Ammeter 2A DC Components are mounted on the panels are: Diode AC Phase Control by Gate Control Firing Circuit. Snubber … Continue reading “Single Phase Dual Converter (Cont- Discount Mode)”
Single Phase Midpoint Cycloconverter
Single Phase Midpoint Cycloconverter Product Features Built in Power Supply Easy to operate and understand On board firing circuits Gradual firing angle control upto 180 degree Test points to observe output of different blocks Sockets for making interconnections
Study Of Pulse Transformer
Study Of Pulse Transformer Pulse transformers are used to couple a trigger pulse generator to a thyristor in order to obtain isolation between two circuits. Generally these are wound upon a ferrite cored bobbin, in 1 : 1 ratio ( NP: NS), to couple one thyristor, or 1 :1 : 1 fashion to couple a pair … Continue reading “Study Of Pulse Transformer”
Three phase fully/half controlled bridge rectifier with resistive and inductive loads
Three phase fully/half controlled bridge rectifier with resistive and inductive loads Features: Overload protection High performance Low maintenance Other Details: Completely self – contained stand – alone unit. Demonstrates the principle and working of 3 φ Half Wave Controlled Rectifier using SCR. Trigger circuit separate for each phase. Trigger circuit using Ramp Comparator Scheme. Step … Continue reading “Three phase fully/half controlled bridge rectifier with resistive and inductive loads”
Thyristor (SCR) Circuit Breaker
Thyristor (SCR) Circuit Breaker In simple circuit breaker system relays are used to control on – off. In these days thyristors are used for the same system. The property of a SCR is to latch, when it can be triggered by an input gate current, when its anode is +ve than its cathode. The SCR … Continue reading “Thyristor (SCR) Circuit Breaker”