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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.
LM7805 IC – 5V Positive Voltage Regulator
₹22.00Add to cartThe LM7805 series of three terminal positive regulators are available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
