Crystal-controlled transistor oscillator having minimum frequency deviation with temperature variation

Claim 1

IN A TEMPERATURE COMPENSATED OSCILLATOR SYSTEM, A NON-TUNED TRANSISTOR OSCILLATOR COMPRISING A TRANSISTOR HAVING A BASE, AN EMITTER, AND A COLLECTOR, AND A PIEZOELECTRIC CRYSTAL UNIT, A PAIR OF ELECTRODES FOR SAID CRYSTAL UNIT, SAID CRYSTAL UNIT HAVING AN SURFACE PLANE, SAID SURFACE PLANE CONTAINING THE X AXIS OF THE CRYSTAL UNIT AND HAVING A CUT ANGLE FRO 34*51'' TO 35*14'' TO THE CRYSTAL Z AXIS AT THE SIDE OF A PLANE R ON THE YZ PLANE, WHERE X IS THE CRYSTAL ELECTRICAL AXIS, Z IS THE CRYSTAL OPTIC AXIS, Y IS THE MECHANICAL AXIS, THE YZ PLANE IS PERPENDICULAR TO THE CRYSTAL ELECTRICAL AXIS, THE R IS A NATURAL CRYSTAL FACE PASSING AT SUBSTANTIALLY 38*13'' TO THE OPTIC AXIS AND PERPENDICULAR TO THE MECHANICAL AXIS, SAID CRYSTAL UNIT HAVING A POSITIVE TEMPERATURE CHARACTERISTIC OF FREQUENCY DEVIATION AGAINST TEMPERATURE, A BIASING BATTERY, THE POSITIVE TERMINAL OF SAID BATTERY BEING GROUNDED, SAID CRYSTAL UNIT BEING CONNECTED BETWEEN THE BASE OF SAID TRANSISTOR AND THE POSITIVE TERMINAL OF SAID BATTERY, A HIGH RESISTANCE CONNECTED BETWEEN THE COLLECTOR OF SAID TRANSISTOR AND THE NEGATIVE TERMINAL OF SAID BATTERY, AND AN IMPEDANCE UNIT CONSISTING OF A PARALLEL CONNECTED CAPACITANCE AND RESISTANCE CONNECTED BETWEEN SAID EMITTER AND THE POSITIVE TERMINAL OF SAID BATTERY.