Abstract: A detector amplifier includes a first stage, a second stage and a low voltage supply. The first stage has a first input for receiving a first input signal, and an output for outputting a first output signal, and amplifies and/or demodulates the first input signal to form the first output signal. The second stage is coupled in series to the first stage and has a first input for receiving the first output signal, a second input for receiving a second input signal, and an output for outputting a second output signal. The second stage amplifies and/or demodulates the first output signal and the second input signal to form the second output signal. The low-voltage supply is coupled in series with the first and the second stage for supplying a DC current to the stages.

Abstract: An implant assembly for the anchoring of an artificial tooth in a jawbone comprises a root fixture for anchoring into the jawbone; a metal sleeve resting on top of the root fixture and having a tapering upper section acting as a male element; and a connector element having a lower part secured to the root fixture and an upper part holding the metal sleeve, the upper part being covered by the sleeve. The assembly further includes a combination made up of an artificial tooth having a bore and a counterbore, and a metal insert solid with the tooth and mounted within the counterbore. The insert is cup-shaped at one end and, acts as a female element. It also includes an outwardly flaring internal lateral wall. The tapering upper section and the outwardly flaring lateral wall are shaped and sized so as to fit snuggly one into the other in the manner of a male and female joint (coupling). A screw arrangement tightly secures the tooth combination to the root fixture through the connector element.