A chip-type solid electrolytic capacitor which has a four-terminal structure. The chargingdischarging unit performs charging operation in accordance with the first current source to generate a charging signal in a shorted condition of the output node. This detracts from the desired vertical form of the etch. When the tire is uninflated, the cable is slack, and the telemetry system is pivoted into the protected orientation. A stand-alone RTC circuit is also provided, the stand-alone RTC circuit including an RTC clock circuit operating independent of the primary clock circuit.