What type of oscillator obtains its DC power for the transistor separately and parallel to the tank circuit?

The shunt-fed oscillator is designed to obtain its DC power supply in a manner that is independent from the tank circuit, allowing it to parallel the power supply with the resonant circuit. In this configuration, the power supply is connected to the base of the transistor through a separate path, which provides the necessary biasing for the transistor's operation without interfering directly with the resonant conditions of the tank circuit. This allows for more stable oscillations, as the tank circuit can freely resonate at its natural frequency without being affected by the power supply variations.

This method is particularly useful for enhancing the performance and efficiency of the oscillator, as it isolates the energy contribution of the power supply from the energy exchange occurring in the tank circuit. The distinct separation allows the tank circuit to oscillate independently while providing a continuous supply of power to maintain the oscillations, thereby facilitating controlled and stable frequency generation.

In contrast, other types of oscillators may incorporate the DC supply more integrally into their feedback loops or tank circuits. For example, a series-fed oscillator utilizes the tank circuit directly in the path of the DC power, which can lead to different operational characteristics compared to the shunt-fed arrangement.