Optical latch circuit and electronic device
A circuit and optical lock technology, which is applied in the direction of pulse generation by optoelectronic devices, electronic switches, electric pulse generator circuits, etc., can solve the problems of complex structure of the seal of the movable part, inability to insert insulators, and deterioration of the sealing performance of the sealing material. Achieve the effect of easy handling
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no. 1 approach ＞
[0041] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. figure 1 It is a schematic block diagram showing a configuration example of an optical latch circuit in the electronic device according to the first embodiment of the present invention.
[0042] in the figure 1 Among them, the optical latch circuit 1 includes a voltage sensor 11 , a photovoltaic power generation element 12 and a feedback resistor 13 . The drive target circuit 200 is driven or stopped by a drive control signal supplied from the output terminal OUT of the optical latch circuit 1 . Each of driving and stopping is controlled by, for example, whether to perform power supply or the like. In the present embodiment, the drive target circuit 200 is driven when the signal level of the drive control signal is "H" level, and stopped when the signal level is "L" level, for example.
[0043] The voltage sensor 11 compares a generated voltage VI1 (described ...
no. 2 approach ＞
[0085] Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. Figure 4 It is a schematic block diagram showing a configuration example of the optical latch circuit according to the second embodiment of the present invention.
[0086] in the Figure 4 Among them, the optical latch circuit 1A includes a voltage sensor 11 , photovoltaic power generation elements 12 and 14 , and a feedback resistor 13 . In this embodiment, with figure 1 Similarly, the drive target circuit 200 is driven when, for example, the signal level of the drive control signal SC is at the "H" level, and is stopped when it is at the "L" level.
[0087] Figure 4 The illustrated optical latch circuit 1A differs in configuration from the optical latch circuit 1 of the first embodiment in that a photovoltaic power generation element 14 is newly added.
[0088] This photovoltaic power generation element 14 has the same characteristics as the photovoltaic ...
no. 3 approach ＞
[0115] Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. Figure 5 It is a schematic block diagram showing a configuration example of the optical latch circuit according to the third embodiment of the present invention.
[0116] in the Figure 5 Among them, the optical latch circuit 1B includes a voltage sensor 11 , photovoltaic power generation elements 12 and 16 , a current mirror circuit 17 , and a feedback resistor 13 . In this embodiment, with figure 1 Similarly, the drive target circuit 200 is driven when, for example, the signal level of the drive control signal SC is at the "H" level, and is stopped when it is at the "L" level.
[0117] Figure 5 The optical latch circuit 1B shown differs in configuration from the optical latch circuit 1 of the first embodiment in that a photoelectric generating element 16 and a current mirror circuit 17 composed of MOS transistors Q5 and Q6 are newly added. MOS transistors ...
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