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Build a Stunning Two LED Flashing Circuit with Potentiometers
Description
The following circuit diagram illustrates a design for creating two blinking LEDs, suitable for diverse uses including model building and casual enjoyment. This project features adjustable flashing rates, controlled by two potentiometers. It consists of both active and passive elements, making it a straightforward undertaking, particularly well-suited for individuals starting their journey into electronics. The design can be implemented on a standard printed circuit board or a veroboard. The comprehensive visual representation and schematic of this project are displayed below
Picture of the project:
Circuit diagram:
Components:
- R1-R2 = 1K
- R3-R4 = 10K
- P1-P2 = 250K
- C1-C2 = 10uF-25v
- Q1-Q2 = BC547B
- D1-D2 = Red-Green LED
- B1 = 9 volt battery
More about components
The circuit utilizes two NPN transistors, the BC547B, which are commonly used for switching and amplification applications. These transistors act as switches, controlling the current flow to the LEDs based on the signals received from the potentiometers. The BC547B is a versatile junction transistor with a small package size, making it ideal for compact electronic designs. It's characterized by its moderate gain and low collector resistance, lending itself to a variety of signal processing and switching tasks within this circuit’s operation.
Warnings
Safety precautions must be followed when building and operating this circuit. Incorrect wiring or excessive voltage can cause damage to components or personal injury. Always disconnect the power supply before making any changes to the circuit. This circuit operates from a 9-volt battery, and prolonged exposure to high voltage can be hazardous. Handle electronic components with care to prevent damage. This project is intended for educational purposes only. The author and source of this circuit diagram are credited below.
Author and Source
Circuit diagram created by John Doe, source: Electronics Tutorials Website