Measuring range selection switch

Details Measuring range selection switch Measuring range selection switch

1989-04-13

1990-08-21

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

324115, 324123R, 330145, 330284, H03G 300

Patent

active

049500406

ABSTRACT:
Appropriately constructed differential amplifiers are suitable as wideband multiplexers. It is the object of the invention to use such amplifiers in conjunction with a measuring range switch. For this purpose, the differential amplifier is equipped with at least three differential amplifier stages, all of which have a common input and different gain due to different current feedback resistors. The switching is effected through blocking transistors, only one of which is optionally switched on in each case and connects a common current source to the associated differential amplifier stage. The invention can be used in measuring technology for multimeters and oscilloscopes.

REFERENCES:
patent: 3452289 (1969-06-01), Ryan
Hollstein, Jr., "Gain Change Amplifier", IBM Technical Disclosure Bulletin, vol. 10, No. 4, Sep. 1967, pp. 521, 522.
Millican, "Four-Level Gain Control Stage", IBM Technical Disclosure Bulletin, vol. 14, No. 9, Feb. 1972, pp. 2639, 2640.
Tietze et al., Halbleiter-Schaltungstechnik, Published by Springer Verlag, 1985, p. 731.

Affiliated with

Also associated with

Rating

Measuring range selection switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Measuring range selection switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring range selection switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1672717