Temperature autocompensated detecting circuit for the capacitance fuze

In view of drastic possible changes in fuze environment temperature, a kind of temperature autocompensated detecting circuit for the capacitance fuze is proposed. It provides a steady detected output when the environment temperature varies from -50 °C to 65 °C and keeps a stable detecting sensitivity. Based on an analysis of the circuit, influence of the major parameters of the oscillating circuit on the amplitude is explored. A few important controllable parameters affecting the circuit feature are found out. A parameter-control method is given in order to improve the circuit performance.