NOVELTY - A rotary transformer has magnetic coils (40,60) associated with steering column circuit (22) and wheel circuit (24). Circuit (22) generates high power signal and transfers it via transformer to wheel circuit (24). Circuits (22,24) have capacitors (C1,C2) and tuning capacitor (CR) respectively to store the received power signal and perform selective connection of column circuit to transformer respectively.    USE - For transferring power and data signal between steering wheel and column in vehicles for generating air bag deployment during collision.    ADVANTAGE - Since the tuning capacitor performs selective connection of column circuit to the primary magnetic coil, the power required to drive the control circuit is minimized and the energy recovered from column coil is maximized, and thus the energy recovered transferred to wheel circuit is stored in capacitors of wheel circuit for providing power to components of wheel circuit.    DETAILED DESCRIPTION - The wheel circuit (24) comprises a squib driver (68) in communication with two storage capacitors (C1,C2) for controlling the firing of vehicle air bag squibs. The column circuit (22) comprises the tuning capacitor (CR) to selectively perform connection with primary magnetic coil (40). A voltage regulator (30) is provided to regulate the level of power signal transferred from column circuit to wheel circuit. Both the column and wheel circuits (22,24) comprises column microprocessor (32) and wheel microprocessor coupled to primary and secondary magnetic coils (40,60) of transformer, respectively. The wheel microprocessor transfers feedback signal which represents the power signal magnitude through rotary transformer to column microprocessor. The power detector (64) in communication with secondary magnetic coil, detects whether the power signal is transferred through transformer to wheel circuit. A power enable circuit (66) is provided for deactivating wheel circuit, when power signal is not transferred to wheel circuit. An INDEPENDENT CLAIM is also included for the method of transferring power and signals between control circuits associated with vehicle steering column and wheel circuit.    DESCRIPTION OF DRAWING(S) - The figure shows the vehicle control system with steering column and wheel circuit.    Column circuit (22)    Wheel circuit (24)    Column microprocessor (32)    Magnetic coils (40,60)    Power detector (64)    Power enable circuit (66)    Squib driver (68)    Voltage regulator (70)    Storage capacitor (C1,C2)    Tuning capacitor (CR)