leftcre.blogg.se - Transistor emitter

#TRANSISTOR EMITTER PDF#
#TRANSISTOR EMITTER SERIES#

The internal emitter resistance of the transistor becomes a dominant factor in calculating gain, and as is well known, the internal emitter resistance is directly proportional to temperature. If the resistor is made too small though then an undesired effect occurs.

#TRANSISTOR EMITTER SERIES#

Of course the smaller the resistance of the resistor in series with the emitter, the larger the gain. The gain of the amplifier can then be calculated by dividing the resistance of this emitter resistor into the resistance of the collector load resistor of the amplifier, provided that the emitter resistor is much greater than the internal emitter resistance of the transistor and the collector load resistor is much smaller than the internal collector resistance of the transistor. Typically a common emitter amplifier is temperature stabilized by adding a resistor in series with the emitter of the transistor.

H03F1/302- Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers.

H03F1/30- Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters.

H03F1/00- Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements.

238000006011 modification reaction Methods 0.000 description 4.

Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Motorola Inc filed Critical Motorola Inc Priority to US05/806,035 priority Critical patent/US4122403A/en Application granted granted Critical Publication of US4122403A publication Critical patent/US4122403A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Motorola Inc Priority date (The priority date is an assumption and is not a legal conclusion.

Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Cave Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/806,035 Inventor David L.

#TRANSISTOR EMITTER PDF#

Google Patents Temperature stabilized common emitter amplifierĭownload PDF Info Publication number US4122403A US4122403A US05/806,035 US80603577A US4122403A US 4122403 A US4122403 A US 4122403A US 80603577 A US80603577 A US 80603577A US 4122403 A US4122403 A US 4122403A Authority US United States Prior art keywords transistor emitter collector coupled base Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Google Patents US4122403A - Temperature stabilized common emitter amplifier

US4122403A - Temperature stabilized common emitter amplifier