Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Patent
1997-01-10
2000-09-19
Le, Dinh T.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
327266, 327261, 327336, 327344, 327281, H03K 513
Patent
active
06121812&
ABSTRACT:
A delay circuit includes a reference voltage generation circuit for generating a reference voltage which changes to a prescribed voltage level during the operation of a comparison circuit, an RC delay stage for integrating an input signal, a comparison circuit for comparing an output signal from the RC delay stage and the reference voltage of the reference voltage generation circuit, and a logic circuit for buffering the output signal of the comparison circuit. Since the reference voltage is pulled to a prescribed voltage level only during a comparison operation, the reference voltage may accurately be maintained at the prescribed voltage level only when necessary free from the influence of other circuits and noises. A delay circuit with reduced current consumption which is capable of changing an output signal with fixed delay time independently of the influence of fluctuations of the power supply voltage and the input logical threshold value of a logic circuit in a succeeding stage is provided.
REFERENCES:
patent: 5357468 (1994-10-01), Satami et al.
Le Dinh T.
Mitsubishi Denki & Kabushiki Kaisha
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