Buffer circuit

Details Buffer circuit Buffer circuit

1990-12-11

1992-06-09

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including signal feedback means

330288, 307270, H03F 134

Patent

active

051210827

ABSTRACT:
A buffer circuit includes an operational amplifier circuit, a first emitter follower circuit whose base is driven by an output of the operational amplifier circuit and whose output is fed back to an inverting input terminal of the operational amplifier circuit, and a second emitter follower circuit whose base is also driven by the output of the operational amplifier circuit and whose output drives a load circuit. In another form, the buffer circuit also includes a current control circuit that detects operation current flowing through the second emitter follower circuit, thereby controlling the operation current flowing through the first emitter follower circuit.

REFERENCES:
patent: 4539491 (1985-09-01), Nishioka et al.
patent: 4584535 (1986-04-01), Seevinck
Okumura, "Design of OP amp-circuits" (continued), p. 70 and 71, (1978).

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