4*7 segments display 7 segments display Basic OP. AMP. circuits page Bicolor LED Bipolar transistors Carbon potentiometer Carbon preset Coil inductor Diac BR100 - 32V Diode Diode bridge Dual operational amplifier LM358 Electrolytic capacitor Fast schottky diode Ferrite core Field effect transistor Flasher LED 5mm Infra-red emitter diode Infra-red receiver diode Integrated Circuits TTL Integrated Cicuits CMOS LED 3mm LED 5mm Light activated switch Linear integrated circuits Low power thyristor MOSFET - N channel MOSFET - N channel Negative voltage regulators Non-polarised capacitor Operational amplifier 741 Optocoupler TIL111 or 4N35 Opto-triac MOC3020 Positive voltage regulators Power thyristor Relay Relay socket Resistor 1/2W Resistor 1/4W Thermistor Transformer Triac Trimmer capacitor Ultrasonic transducer Unijunction transistor Variable voltage regulators Varicap diode BB105B Voltage dependent resistor Wirewound potentiometer 3W Wirewound resistor 10W Wirewound resistor 5W Zener diode