Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Delay controlled switch
Patent
1995-07-28
1997-05-13
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Delay controlled switch
327172, 327132, 327263, H03K 3023, H03K 513
Patent
active
056296444
ABSTRACT:
An adjustable timer circuit capable of producing accurate pulse outputs having a wide range of periods. The timer circuit includes a timing capacitor and an associated current source for producing a reference current having a magnitude which is derived from a reference voltage. A current divider is used to divide the reference current down to a smaller current used for charging the timing capacitor. A comparator circuit is provided for comparing the voltage produced across the timing capacitor with a comparison voltage also derived from the reference voltage. The timing capacitor is discharged in response to the comparator output so that subsequent output pulses can be produced. The current divider is adjustable in response to a mode control signal so that different magnitude charging currents can be produced which results in different magnitude pulse width outputs.
REFERENCES:
patent: 3831113 (1974-08-01), Ahmed
patent: 4584494 (1986-04-01), Arakawa et al.
patent: 4607238 (1986-08-01), Kohsiek
patent: 4608530 (1986-08-01), Bacrania
patent: 4620312 (1986-10-01), Yamashita
patent: 4812687 (1989-03-01), Larson et al.
patent: 4981358 (1991-01-01), McBrien et al.
patent: 5003194 (1991-03-01), Engelhard
patent: 5047664 (1991-09-01), Moyal
patent: 5130582 (1992-07-01), Ishihara et al.
patent: 5233315 (1993-08-01), Verhoeven
patent: 5345196 (1994-09-01), Mahant-Shetti et al.
patent: 5352934 (1994-10-01), Khan
patent: 5371770 (1994-12-01), Sakuma
patent: 5387882 (1995-02-01), Schoofs
patent: 5391979 (1995-02-01), Kajimoto et al.
patent: 5455522 (1995-10-01), Jones
patent: 5469100 (1995-11-01), Wuidart et al.
Callahan Timothy P.
Micron Quantum Devices Inc.
Shin Eunja
LandOfFree
Adjustable timer circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable timer circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable timer circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1388183