PRODUCTION METHOD OF MINUATURE QUARTZ GENERATOR (RESONATOR)-THERMOSTAT Russian patent published in 2009 - IPC H03H3/00 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and may be used for the production of highly stable quartz resonators and generators with inner thermostating. The production method provides for installing radio elements of generator (resonator) and quartz piezo-element by their group soldering to the board. The board is then installed to the housing basis. After that, the generator (resonator) is heated at 150°C and tuned to the operating frequency under vacuum conditions. The housing lid is vacuum tightly connected with the basis. The thermovacuum annealing of generator (resonator) at 150÷200°C is performed at the open riveted hole in the housing lid. Then, the generator is cooled to the confinement temperature (70±10) °C. The housing is vacuum confined by riveted hole soldering in the lid. After installation, the board with soldered radio elements and the housing lid with the soldered riveted hole are subject to vacuum annealing during 0.5÷2.5 hours at the temperature of solder melting (T_h÷T_l), where T_h and T_l - high and low temperature of solder melting. The thermovacuum annealing of generator (resonator) at the open riveted hole is conducted until the surface inside the generator (resonator) housing is cleaned to 6·10^-5÷2.5·10^-2 tore·sm³/f·m² which is defined by the specific gas release value within the temperature 120-180°C.

EFFECT: improved efficiency, high items quality and reliability.

2 dwg, 1 tbl