Temperature compensated switchable current source

Details Temperature compensated switchable current source Temperature compensated switchable current source

1980-06-13

1983-06-28

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307265, 307297, 307362, H03K 5153, H03K 1714

Patent

active

043907997

ABSTRACT:
A voltage-to-frequency converter wherein a monostable multivibrator is fed by an integrator which periodically activates a switchable current source coupled to the input of the integrator for a finite period of time and at a rate proportional to the level of an input voltage fed to such integrator. The monostable multivibrator includes nonsaturating switching transistors enabling effective operation of the converter over a relatively wide bandwidth. The converter also includes circuitry to temperature compensate the switchable current source enabling such current source to pass a current pulse having substantially the same finite time duration over the range of operating temperatures.

REFERENCES:
patent: 3725681 (1973-04-01), Frederiksen
patent: 3758791 (1973-09-01), Taniguchi et al.
patent: 4056740 (1977-11-01), Schoeff

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