Directorate Of Technical Education

Directorate Of Technical Education has published Supply Of Eee Lab Items , Supply Of Eee Laboratory Equipments , Line Synchronized Ujt Trigger Circuit ? Line Synchronization Dc Power Supply Circuit ? Ujt Relaxation Oscillator Circuit ? Provision To Add Dc Pedestal Voltage To The Capacitor In The Circuit ? Triggering Circuit For 2 Scrs Using Pulse Transformer ? 24 V Lamp Ac Load Using 2 Scrs , Diac – Triac Lamp Control Circuit ? Variable Ac Power Circuit Using Triac ? Diac Circuit To Trigger The Triac In Both Half Cycles ? Provision To Vary The Charging Time Of Capacitor ( Changing The Phase Angle Also ) For The Diac ? Isolation Transformer For 110 V Ac, Lamp Load , Scr Commutation Circuits ( Class B & D ) ? Natural Commutation – 24 V Ac Power Supply, Dc Triggering ? Current Commutation – 24 V Dc Power Supply, Pulse Triggering, Rlc Components ? Complementary Commutation – Main Scr And Auxiliary Scr, 2 Nos. Of Dc Triggering ? Resonant Commutation – 24 V Dc Power Supply, Pulse Triggering, Discharge Circuit To Facilitate To Trigger Again Voltage Commutation – 2 Nos. Of Scrs As On And Off Switches, Provision To Charge The Capacitance Which Will Be Used For Voltage Commutation , Single Phase Half Wave Controlled Rectifier ? Half Wave Controlled Rectifier Circuit ? Phase Angle Control Potentiometer ? Provision To Connect R Load & Rl Load , Single Phase Fully Controlled Bridge With R & Rl Load ? Single Phase Full Bridge Power Circuit ? Firing Circuit Consists Of Phase Angle Control Circuit Using Tca 785 ? Triggering Circuit From The Output Of Tca 785 Using Pulse Transformers ? Vary The Conduction Angle And Plot The Output Voltage ? R, Rl Load With Freewheeling Diode ? 24V, 2 A Power Supply For The Power Circuit ? Necessary Dc Power Supplies For The Control Circuits , Single Phase Semi Controlled Bridge With R Load Trainer Kit ? Single Phase Halfbridge Power Circuit ? Phase Angle Control Circuit Using Tca 785 ? Triggering Circuit From The Output Of Tca 785 Using Pulse Transformers ? Vary The Conduction Angle And Plot The Output Voltage ? R & Rl Load ? 24V, 2 A Power Supply For The Power Circuit ? Necessary Dc Power Supplies For The Control Circuits , Dc Chopper Trainer Kit ? Ramp Generation Circuit ? Level Translation Circuit ? Comparator Circuit To Produce Pwm Signal ? Monostable Circuit For Triggering Aux. Scr ? Chopper Power Circuit Using Main Scr And Aux. Scr With Inductance ? Triggering Circuit For 2 Scrs With Pulse Transformer, Necessary Dc Power Supplies , Pwm Based Step Up Chopper Using Mosfet ? Pwm Based Control Circuit ? Power Circuit To Get Variable Dc , Pwm Based Step Down Chopper Using Mosfet ? Square Wave Generator ? Integrator To Generate The Ramp ? Comparator With Dc Voltage As One Input ? Mosfet Switch To Switch On The Load, Small Dc Motor As Load , Single Phase Single Pulse Inverter Using Mosfet / Igbt ? 50 Cycles Generation ? Variable Duty Cycle Generation ? Driver Circuit ? H Bridge Power Circuit Using Mosfet , Trainer Kit For Smps Using Mosfet ? Isolation Transformer ? Inverter Circuit ? Output Circuit ? Feedback Circuit , Dcshunt Motor Open Loop & Closed Speed Control Circuit With 24 V Pmdc Motor Kit ? Phase Angle Control Using Tca 785 ? Control Scheme To Vary The Phase Angle Of The Half Bridge ? Trigger Circuit For Scrs And With Pulse Transformers ? Half Bridge Power Circuit To Drive The Pmdc 24 V Motor ? Small 24 V Pmdc Motor ? Necessary Dc Power Supplies , Open Loop & Closed Speed Control Of Ac Motor ? Carrier Wave Generation ? Pwm Generation According To The Sine Wave ? Driver Circuit ? H Bridge Power Circuit Using Mosfet , Universalmotor Control Circuit With Fractional Hp Universal Motor Kit ? Control Scheme For Phase Angle Control Using Tca 785 ? Triggering Circuit For Scrs / Triac ? Scr / Triac Ac Power Circuit With Switch And Power Socket ? Fhp Universal Motor With Plug Built In Power Supplies , Single Phase Parallel Inverter Using Mosfet ? Triggering Circuit ? Power Circuit Using Mosfet ? Lamp Load ? Chopper Power Circuit , Single Phase To Single Phase Cyclo Converter ? Cyclo Converter With Divide By 2 Supply Frequency And Divide By 3 Frequency ? Power Circuit Using Center Tapped 24 V Transformer And 4 Nos. Of Scrs And Resistive Load ? +Ve And –Ve Polarity Zero Crossing Detectors Using Opto Couplers ? Decade Counters To Generate Required Control Signals ? Separate 4 Nos. Of Dc Power Supplies To Trigger The Scrs ? Triggering Circuits To Trigger The Ate Circuits Of Power Scrs , Cro With Power Probe , Multimeter => Limited. Last date of submission for this tender is 2023-12-25. This is a Laboratory Equipment tender in Thiruvallur, Tamil Nadu