Alguien podría explicarme el funcionamiento del circuito eléctrico? Y realizarlo?
What is an Electric Telegraph?
An electric telegraph is a communication system that sends messages using electrical signals. It was one of the first long-distance communication devices, and it worked by sending pulses of electricity through wires to represent letters and numbers—usually in Morse code (dots and dashes).
How Does the Circuit Work?
A basic telegraph circuit includes:
- Power source – Like a battery.
- Telegraph key – A simple switch that the operator presses to complete the circuit.
- Wire – To carry the electrical current.
- Electromagnet – Becomes magnetized when current flows through it.
- Receiver (Sounder or Buzzer) – Clicks or buzzes to indicate signal.
Working Principle:
- When you press the telegraph key, it closes the circuit, allowing electricity to flow.
- The current powers an electromagnet at the receiving end.
- The electromagnet pulls a metal armature, creating a click or sound.
- By pressing the key for different durations, you create short (dots) and long (dashes) signals for Morse code.
- Releasing the key opens the circuit, stopping the current and demagnetizing the coil.
How to Build a Simple Telegraph Circuit
Components:
- 1x 9V Battery
- 1x Telegraph Key (or a push button)
- 1x Buzzer or Electromagnet and Metal Arm
- Wires
- (Optional) Light bulb or LED to visualize signal