SERIES COMMUTATED SCR INVERTER 2510
Set up consists :- Pulse generator ( 100 - 400 Hz ) using two UJT rex with separate timing controls, two SCRs, three inductors and three capacitors. 25 watt Lamp load with two analog meters. Input supply is in form of DC 24 volt 3 Amp. Built in power supply, 230V mains operated Complete with working manual & patch cords.

SCR PARALLEL INVERTER 2511
Set up consists: Pulse generator (60-90Hz nominal) with firing transformer, two SCRs, one inductor one transformer, one capacitor, two analog meters and lamp load to accommodate three lamps of different ratings. The input supply in form of DC 24 volt 6 Amp. Built in power supply, 230V mains operated Complete with working manual & patch cords.

STUDY OF LAMP FLASHER USING SCR 2512
Kit consists: Step down transformer 12 volt dc @ 1 amp, two SCRs, UJT relaxation oscillator with 12 volt 21 watt lamp as load. Test points to observe the commutation polarity upon CRO. Built in power supply, 230V mains operated Complete with working manual & patch cords.

STUDY OF SCR RING COUNTER 2513
Kit consists: DC regulated 12 volt supply three SCR with pulse gating circuit, pulse generator by timer 555, frequency control, three LEDs to observe sequence, test points for observation of commutation pulses. Built in power supply, 230V mains operated Complete with working manual & patch cords.

STUDY OF AC CHOPPER USING SCR 2514
Kit consists :- Step down transformer 25 volt ac @ 1 amp, four SCRs, 6 volt ac for zero crossing detector cum comparator circuit, 12 volt regulated dc for complete control circuit, one analog voltmeter across resistive load, pulse firing circuit with transformer and capacitor commutation circuit. Test points for observation of waveforms upon CRO. Built in power supply, 230V mains operated Complete with working manual & patch cords.

TRIAC CHARACTERISTICS 2515
Kit consists :- DC regulated 0 - 75 volt @ 0.15 Amp continuously variable supply for main terminals, one dc 0 - 3 volt supply for gate control, one reset key, one triac, three analog meters two of them are calibrated in dual range. Built in power supply, 230V mains operated Complete with working manual & patch cords.

SPEED CONTROL OF INDUCTION MOTOR 2516A
Speed control by varying voltage.
Set up consists: Two antiparallel thyristors triggered by a UJT rex oscillator in synchronism of input frequency. One 1/8 HP induction motor. The set up is line operated, thus transformers are provided to isolate the points to check waveforms. Built in power supply,230V mains operated Complete with working manual & patch cords.

SPEED CONTROL OF INDUCTION MOTOR 2516B
Speed control by varying frequency.
Set up consists: Thyristor based inverter circuit, firing angle control circuit with frequency variation between 40-100Hz, thyristor controlled rectifier to obtain regulated dc for inverter circuit, one ac voltmeter ( MI type ), transformer isolation at test points, small ac induction motor. Built in power supply, 230V mains operated Complete with working manual & patch cords.