JPS6025244U - timer circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is an operating characteristic diagram of a conventional preheating control circuit, Fig. 2 is an ideal operating characteristic diagram of a preheating control circuit, Fig. 3 is a circuit diagram of an embodiment of the present invention, and Fig. 4 is a diagram of an ideal operating characteristic of a preheating control circuit. FIG. 3 is a signal waveform diagram of each part of the embodiment. 1°°°・°・Switching circuit, 2...Timer operation standby compensation circuit, 3...Integrator, 4...
...Discrimination circuit.

Claims (1)

[Scope of utility model registration request] A circuit that generates a rectangular wave signal of a predetermined amplitude value whose time width is the same as that of the input rectangular wave signal, and a circuit that performs time integration of the rectangular wave signal between the leading edge and the trailing edge of the rectangular wave signal. an integrating circuit that outputs an integral value and also outputs a value that decreases approximately in proportion to time from the integral value from the time of the trailing edge, and a point in time when the output of this integrating circuit reaches a predetermined value during the decreasing period; A timer circuit comprising: a circuit for generating a signal representative of the timer circuit;