A picohydro generator is to be used as power source
for an analog pressure transmitter sending real-time
data on water depth at dam outlet. The pressure
transmitter has a voltage of 15 Volts DC and
amperage of 20 milliamperes. What minimum power
output and voltage of picohydro generator should you
request for purchasing?

To calculate the minimum power output of the picohydro generator, we can use the formula for electrical power:

\[
P = V \times I
\]

Where:
- \( P \) is the power in watts (W),
- \( V \) is the voltage in volts (V),
- \( I \) is the current in amperes (A).

Given:
- \( V = 15 \text{ V DC} \),
- \( I = 20 \text{ mA} = 0.02 \text{ A} \).

Now, let's calculate the power output:

\[
P = 15 \, \text{V} \times 0.02 \, \text{A} = 0.3 \, \text{W}
\]

Thus, the minimum power output required from the picohydro generator is **0.3 watts**.

### Voltage requirement
To ensure the pressure transmitter operates correctly, the voltage provided by the picohydro generator should match the operating voltage of the pressure transmitter, which is **15 volts DC**.

### Summary:
- **Minimum power output**: 0.3 watts,
- **Voltage requirement**: 15 volts DC.

Would you like more details on power calculations or have any further questions?

Here are some related questions to think about:
1. What are the factors that influence the efficiency of a picohydro generator?
2. How can voltage regulation be ensured in a picohydro system?
3. What happens if the picohydro generator produces less than the required power?
4. How would you protect the transmitter from voltage spikes?
5. Can the generator provide power for additional devices connected to the system?

**Tip**: It's good practice to consider a safety margin when choosing a generator to account for power losses and ensure reliability.

A picohydro generator is to be used as a power source for an analog pressure transmitter sending real-time data on water depth at dam outlet. The pressure transmitter has a voltage of 15 Volts DC and amperage of 20 milliamperes. What minimum power output and voltage of picohydro generator should you request for purchasing?

Find out how to calculate the minimum power output required for a picohydro generator powering an analog pressure transmitter. Learn key concepts in DC circuits, including the power formula P = V × I, and ensure proper voltage and power requirements are met for reliable operation. Ideal for high school and college-level physics or electrical engineering students.

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