Abstract: A method of manufacturing a crystal oscillator, in which method semiconductor components and the crystal or another resonator (1) are joined to a bottom base (4), most suitably to the printed circuit board material. The components (2, 3, 5) are joined by soldering or gluing to said bottom base and the crystal and another resonator (1) are installed, in regard to other components (2, 3, 5), using the bottom base area on the same spot.

Abstract: A component case comprising one or more micro circuits (6), where the micro circuit component is placed on a base, most suitably on a printed circuit board and said component is joined to the base with a known reversing circuit or thread bonding techniques and the base has elevations (5) placed around said component. The base is flexible and in order to stiffen the structure a stiff structure is placed on it, as a sheet metal (10), a component or another similar structure of layers and the inside centre space of the case is filled with glue or plastic.

Abstract: A method to control a frequency oscillator, as a crystal oscillator, and to form an oscillating circuit in order to produce a frequency oscillator improved to its qualities, in which the frequency of reference oscillator (1) is changed by means of frequency multiplier (2) into output frequency. As frequency oscillator a low frequency oscillator (1) is used, the control of which output frequency (5) is carried out adjusting the low frequency oscillator (1) by means of control arrangement (4).

Abstract: A crystal oscillator module and method to manufacture the crystal oscillator module by sandwich method on a bottom-base, as a printed board (4), where the oscillator crystal (1) is for instance fixed onto the surface of the printed district board (4). On the opposite surface of the printed district board, at least partly at oscillator crystal (1), in order to increase the thickness of the printed district board (4), one or several elements (5) are fixed, by means of which a cavity is formed for components included module.