on transistor in oscilator

Thread Starter

xljin2014

Joined Nov 11, 2014
73
it is said that in harmonic oscillator circuit, the transistor functions as amplifier. so in multivibrator circuit, what is the transistor's function?

what does transistor function in oscillator circuit?
 

Papabravo

Joined Feb 24, 2006
17,316
It functions as a switch with two stable states. The two states are ON and OFF. It is usually configured to have a forced Beta of between 10 & 20 to guarantee that ON is equivalent to saturation and OFF is equivalent to cutoff. It is the same for a monostable or a bistable. The transistor (or vacuum tube) is still a switch.
 
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Thread Starter

xljin2014

Joined Nov 11, 2014
73
It functions as a switch with two stable states. The two states are ON and OFF. It is usually configured to have a forced Beta of between 10 & 20 to guarantee that ON is equivalent to saturation and OFF is equivalent to cutoff. It is the same for a monostable or a bistable. the
It functions as a switch with two stable states. The two states are ON and OFF. It is usually configured to have a forced Beta of between 10 & 20 to guarantee that ON is equivalent to saturation and OFF is equivalent to cutoff. It is the same for a monostable or a bistable. the transistor (or vacuum tube) is still a switch.
transistor (or vacuum tube) is still a switch.
It functions as a switch with two stable states. The two states are ON and OFF. It is usually configured to have a forced Beta of between 10 & 20 to guarantee that ON is equivalent to saturation and OFF is equivalent to cutoff. It is the same for a monostable or a bistable. the transistor (or vacuum tube) is still a switch.
thx so much!
 

sparky 1

Joined Nov 3, 2018
613
In the ionic relay using three thermionic tubes having three electrodes developed by Eccles patent 148,582 the feed back from the last tube can turn off the first tube distinguishing it from prior art of harmonic oscillator. The circuit was first called a trigger relay. We have come a long way since then and is now called a switch. The research went in different directions from telegraph/ telephony relay, naval anti-aircraft to *differential analyzer, computer memory. This makes it a little confusing about the different applications and about what was allowed to be public information in those days, today the industrial complex historical info is mostly disclosed.
https://www.historyofinformation.com/detail.php?id=3606

The role of mathematics in the academic industrial complex made key advancements under programs of defense work mostly *naval ref below.
An electrical engineer working for the Air Force; Claude Shannon contributed to usefulness that would later welcome the improvement with the transistorized version.

https://www.google.com/books/edition/Splinternet/vOF0CwAAQBAJ?hl=en&gbpv=1&dq=The+Electrician,+83,+[September+19,+1919],+p.+298&pg=PA21&printsec=frontcover
 
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Ramussons

Joined May 3, 2013
1,100
it is said that in harmonic oscillator circuit, the transistor functions as amplifier. so in multivibrator circuit, what is the transistor's function?

what does transistor function in oscillator circuit?
In a Multivibrator, the Transistor acts as a switch - either ON or OFF.
In a Harmonic Oscillator, The transistor operates as a Non Linear amplifier, generating a Non Sinosoidal wave containing Harmonics. The required Harmonic is taken through a LC filter.
In a good Oscillator, the Transistor operates in a Linear region generating a pure sine wave without any harmonics.
 
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