🔍 Key Concepts

• FM ratio detector circuit components (diodes, transformer, ratio arm/bridge) • How balance in the detector affects noise and distortion • Which part of the circuit is specifically designed to be adjusted for best performance

💭 Think About

• In a ratio detector, which element is intended as the adjustable control to optimize demodulation quality? • Which option refers to a circuit element that sets the balance between the two rectified outputs from the diodes? • Which items in the choices are fixed components vs. a user-adjustable control for fine‑tuning signal-to-noise?

✅ Before You Answer

• Identify which choice mentions balance or a bridge/control related to the detector circuit. • Recall that the two diodes form a pair and their outputs must be balanced to minimize noise. • Distinguish between normal operating voltages (like a transistor’s supply) and a dedicated alignment/adjustment control in the FM detector.