In a HFC fiber optic node, which voltages are commonly produced by DC power supplies?

In a Hybrid Fiber-Coaxial (HFC) fiber optic node, the commonly produced voltages by DC power supplies are often 5, 12, and 14 VDC. This range of voltages is essential for powering the various components within the node, which may include amplifiers, digital signal processors, and other electronic elements necessary for receiving and transmitting signals.

The selection of these specific voltages (5, 12, and 14 VDC) aligns with standard practices in electronics, providing sufficient power for operational demands while ensuring compatibility with common circuitry. Using 5 VDC is typical for digital components, and 12 VDC is frequently utilized for higher power requirements. The 14 VDC may be used for certain components that require slightly higher voltage while still being within a safe range for operation.

In contrast, the other voltage options presented do not reflect the standard voltage outputs typical within HFC networks. For example, lower values like 3 and 9 VDC would not adequately power most components, and much higher values like 20 VDC could cause damage to sensitive electronic components designed to operate at lower voltages. Thus, 5, 12, and 14 VDC are the most logical and commonly utilized outputs