Deparment Of Technical Education

Deparment Of Technical Education has published Supply Of Electronics Equipment-2 Scr Commutation Chopper Trainer Kit ( Class B& Class D ) N- Natural Commutation – 24V Ac Power Supply, Dc Triggering N- Current Commutation – 24V Dc Power Supply, Pulse Triggering, Rlc Components N- Complementary Commutation – Main Scr And Auxiliary Scr, 2 Nos. Of Dc Triggering N- Resonant Commutation – 24V Dc Power Supply, Pulse Triggering, Discharge Circuit To Facilitate To Trigger Again N- Voltage Commutation – 2 Nos. Of Scrs As On And Off Switches, Provision To Charge The Capacitance Which Will Be Used For Voltage Commutation N 3 Single Phase Half And Fully Controlled Bridge Converter With Rl Load N - Single Phase Half And Full Bridge Power Circuit N- Firing Circuit Consists Of Phase Angle Control Circuit Using Tca 785 N- Triggering Circuit From The Output Of Tca 785 Using Pulse Transformers N- Vary The Conduction Angle And Plot The Output Voltage N- R Or Rl Load N- 24V, 2A Power Supply For The Power Circuit N- Necessary Dc Power Supplies For The Control Circuits N 4 Open Loop Speed Control Of 1Øac Motor N- Carrier Wave Generation And Modulation Signal Generation N- Pwm Generation According To The Sine Wave, N- Variable Voltage ( Modulation Index ) N- Driver Circuit And 4 Nos. Of Individual Power Supply For Gate Trigger Circuit N- H Bridge Power Circuit Using Mosfet / Igbt N- ¼ Hp 230 V Single Phase Ac Motor N- 20 Hz To 60 Hz Frequency Variation, Accordingly Speed Control N 5 Lamp Control Circuit Using Diac & Triac N- Variable Ac Power Circuit Using Triac N- Diac Circuit To Trigger The Triac In Both Half Cycles N- Provision To Vary The Charging Time Of Capacitor ( Changing The Phase Angle Also ) For The Diac N- Isolation Transformer For 110V Ac, Lamp Load N 6 Smps Using Mosfet / Igbt Trainer Kit N - Ic Based Pwm Controller N - Mains Voltage To 12V Dc Voltage Conversion N - 32 Khz Oscillator N - Power Mosfet As Switch N - Fly Back Converter With Isolation Transformer N - Output Circuit N - Feedback Circuit N 7 Single Phase Parallel Inverter Using Mosfet N - Single Pulse 50 Cycles Generation N - Monostable Time Delay Circuit Both Half Cycles N - Parallel Inverter Configuration N - 24V Ac Output N - Lamp Load N 8 Dc Chopper Control Circuit Using Thyristor N- Ramp Generation Circuit- Level Translation Circuit N- Comparator Circuit To Produce Pwm Signal Monostable Circuit N- Chopper Power Circuit Using Main Scr And Aux Ntrigger Circuit For Two Scrs With Pulse Translation- Necessary Dc Power Supply N 9 Single Phase – Single Phase Cyclo Convertor N - With Divide By Two Supply Frequency N - Power Circuit Using Center Tapped 24 V Transformer And 4 Nos. N - Resistive Load Positive And Negative Polarity Zero Crossing Detector N - Separate 4 Nos. Of Dc Power Supplies N - Trigger Circuits To Trigger The Gate Circuits Of Power Scrs N 10 Universal Motor Control Circuit With Fraction Hp Universal Motor N- Control Scheme For Phase Angle Control Using Tca 785 Scr / Triac N- Scr / Traic Ac Power Circuit N- Fraction Hp Universal Motor With Plug N- Built In Power Supply N 11 Pwm Based Step Down Chopper Using Mosfet N- Square Wave Generator Integrator To Generate The Ramp N- Comparator With Dc Voltage As One Input Mosfet Switch N- Small Dc Motor As Load 12 Half Wave And Full Wave Controlled Rectifier With R Load N- Half Wave Controlled Rectifier Circuit N- Phase Angle Control Potentiometer N- Provision To Connect R L Load N 13 Single Phase Single Pulse Inverter Using Mosfet / Igbt N- Single Phase 50 Cycles Generation N- Variable Duty Cycle Generation On Both Half Cycles N- H Bridge Power Circuit Using 4 Nos. Of Mosfet N- 4 Nos. Of Individual Power Supply For Gate Trigger Circuit N- 230V Ac Output N 14 Step Up Chopper Using Mosfet N- Output Voltage Vs Duty Cycle N- Load Characteristic Without Feedback N- Load Characteristic With Feedback N- Output Voltage Vs Input Voltage With Feedback N- Necessary Power Supply N 15 Line Synchronized Ramp Trigger Using Ujt With Ac Load N- Dc Power Supply Circuit N- Ujt Relaxation Oscillator Circuit N- Provision To Add Dc Pedestal Voltage To The Capacitor In The Circuit N- Triggering Circuit For Two Scrs Using Pulse Transformer N24v Lamp Ac Load Using Two Scrs N. Last date of submission for this tender is 2019-10-17. This is a Inverters tender in Government Polytechnic College Coimbatore, Tamil Nadu