Browse Prior Art Database

Resistor Transistor Clamp

IP.com Disclosure Number: IPCOM000091266D
Original Publication Date: 1967-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Wu, WW: AUTHOR

Abstract

This clamp circuit, drawing A, requires only two metalization patterns 10 and 12 to interconnect it to other components. The current-voltage characteristic of the circuit is shown at B. As the current increases the voltage across the emitter junction of transistor T1 increases due to the voltage drop across resistor R2. However, when the emitter junction starts conducting, resistors R1 and R2 are shunted by T1. Thus the initial slope 14 of the current-voltage characteristic is determined by the sum of R1 and R2. The later slope 16 of the characteristic is determined by the emitter junction of T1. The circuit can be fabricated in monolithic form as in drawings C and D.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Resistor Transistor Clamp

This clamp circuit, drawing A, requires only two metalization patterns 10 and 12 to interconnect it to other components. The current-voltage characteristic of the circuit is shown at B. As the current increases the voltage across the emitter junction of transistor T1 increases due to the voltage drop across resistor R2. However, when the emitter junction starts conducting, resistors R1 and R2 are shunted by T1. Thus the initial slope 14 of the current-voltage characteristic is determined by the sum of R1 and R2. The later slope 16 of the characteristic is determined by the emitter junction of T1. The circuit can be fabricated in monolithic form as in drawings C and D.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]