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NE555 Timer IC DIP-8 Package
₹22.00Add to cartThe NE555 IC devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a stable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low.
Transistor BD139
₹4.00Add to cartThe BD139 is an NPN bipolar junction transistor (BJT) commonly used in amplifier and switching circuits, with a maximum current rating of 1.5A. This transistor offers low saturation voltage and high current gain characteristics, making it suitable for audio amplifier stages, power switching applications, and voltage regulation circuits.
BC547 NPN General Purpose Transistor 45V 100mA TO-92 Package –
₹4.00Add to cartBC547 is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.
