What is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

What is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

• A. 24.0 volts at 4 amperes
• B. 13.8 volts at 4 amperes
• C. 24.0 volts at 12 amperes
• D. 13.8 volts at 12 amperes

Answer: (D)

For a typical 50 watt output mobile FM transceiver, a power supply rated at 13.8 volts at 12 amperes is appropriate due to the voltage and current requirements for efficient operation. To determine why this rating is suitable, you can use the formula for electrical power, which is Power (W) = Voltage (V) × Current (A). In this case, for a 50 watt transceiver, you can rearrange the formula to find the current needed at a specific voltage. Using the rated voltage of 13.8 volts: Power = Voltage × Current 50 W = 13.8 V × Current By rearranging, current = Power / Voltage Current = 50 W / 13.8 V This results in approximately 3.6 amperes. Considering the efficiency of power supplies and the transceiver's additional power needs (such as for background functions), it's advisable to have a higher current rating. The choice of 12 amperes provides a substantial margin above the calculated 3.6 amperes, ensuring reliable performance during transmissions and accounting for high current draw during peak operation or when transmitting strong signals. The option with 13.8 volts at 12 amperes thus not

For a typical 50 watt output mobile FM transceiver, a power supply rated at 13.8 volts at 12 amperes is appropriate due to the voltage and current requirements for efficient operation.

To determine why this rating is suitable, you can use the formula for electrical power, which is Power (W) = Voltage (V) × Current (A). In this case, for a 50 watt transceiver, you can rearrange the formula to find the current needed at a specific voltage.

Using the rated voltage of 13.8 volts:

Power = Voltage × Current

50 W = 13.8 V × Current

By rearranging, current = Power / Voltage

Current = 50 W / 13.8 V

This results in approximately 3.6 amperes.

Considering the efficiency of power supplies and the transceiver's additional power needs (such as for background functions), it's advisable to have a higher current rating. The choice of 12 amperes provides a substantial margin above the calculated 3.6 amperes, ensuring reliable performance during transmissions and accounting for high current draw during peak operation or when transmitting strong signals.

The option with 13.8 volts at 12 amperes thus not