Preamplifier

Details Preamplifier Preamplifier

1983-01-14

1985-05-21

Mullins, James B.

Amplifiers

With periodic switching input-output

330293, H03F 102, H03F 134

Patent

active

045189234

ABSTRACT:
A preamplifier for a periodically varying input signal (PS), has an input terminal (4) connected to a control electrode (g) of a voltage-controlled transistor (6) and to a terminal (7) of a resistor (8) which form part of a first preamplifier stage (6-16). An output electrode (d) of the transistor (6) and a further terminal (9) of the resistor (8) are coupled to an input (17) and output terminal (18), respectively of a second preamplifier stage (17-49) via separate direct current connections. An output terminal (5) of the preamplifier is on the one hand fedback to the said input terminal (17) of the second stage (17-49) via a signal clamping circuit (49) and on the other hand has a direct current connection to the said output terminal (18) of the second stage (17-49). The voltage-controlled transistor (6) is supplied with such a gate-source bias voltage (Vgs) that the optimum signal-to-noise ratio for the output signal (APS) is present. In addition, the signal clamping circuit (49) comprises a controllable current source (48) arranged at the output (43) thereof, which current source (48) is employed for feeding the said transistor (6) and a current-controlled transistor (19) which is connected to the input terminal (17) of the second stage (17-49).

Affiliated with

Also associated with

Rating

Preamplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1540864