Etienne Camus

Title: Etienne Camus: Innovator in Circuit Technology

Introduction

Etienne Camus is a notable inventor based in Senlis, France. He has made significant contributions to the field of circuit technology, holding a total of 2 patents. His work focuses on enhancing the reliability and efficiency of electronic circuits.

Latest Patents

One of his latest patents is an "Apparatus for monitoring the period of separation of impulses." This innovative circuit monitors the period of separation between impulses and provides an output only when the period of separation between successive impulses is substantially the same as a predetermined period. The impulses are applied to a monostable circuit, which produces pulses of fixed duration in response. A switching circuit controlled by these pulses switches a binary counter to be driven by a low-frequency oscillator output between pulses and by a high-frequency oscillator output during pulses. The counter is reset to zero at the trailing edge of each pulse. A comparator determines whether, before reset, the counter reaches a count corresponding to the predetermined period and provides an output pulse to an AND circuit input when the count is reached. The AND circuit has another input connected to the monostable circuit output, thus providing an output pulse when the comparator output coincides with a corresponding pulse from the monostable circuit. The high and low oscillator frequencies and the pulse duration of the monostable circuit are selected such that the counter will reach the predetermined count if the input impulse separation is substantially the same as the predetermined period.

Another significant patent is the "Total security time-delay circuit." This circuit is particularly useful in railway communications, providing a series of output pulses after a specific minimum interval in response to a direct voltage applied to the circuit input. The minimum interval is maintained even in the event of circuit component malfunctions. A pulse generator connected to the circuit input provides a series of pulses to control a first contact breaker, which switches the primary winding of a transformer to partially discharge a capacitor that is series-connected to the primary winding. The capacitor charges through a resistive network of a transformer secondary winding circuit, which includes a second contact breaker having a control terminal connected to the transformer secondary winding. This breaker is operable to provide output pulses when the capacitor discharge reaches a sufficient intensity. A grounded Zener diode connected to a junction of the resistive network and a switch terminal of the second contact breaker ensures that the time delay of the output pulses is not reduced below the minimum