Construction of the Transmitter Circuit

Observe the schematic of the transmitter and receiver circuits shown in Figure . In this section, you will build the transmitter and receiver circuitry.

  
Figure: Transmitter and Receiver Circuit

The circuit contains:

1. a single pole single throw (SPST) switch
2. a light emitting diode (LED-D1) with current limiting resistor
3. a 1 k potentiometer (variable resistor)
4. a transmitting coil
5. a receiving coil
6. a germanium rectifying diode (D2) with smoothing capacitor (C1).

• Soldering leads to the switch
• LED Current Limiter Design
• Winding the Transmit and Receive Coils
• Rectifier and Smoothing Circuit